ANAXIMANDER 2 5 70 It is a large cirque located at a very northern lunar latitude. It looksquite elliptical for the perspective effect at the border of the Moon.No central peak. Diameter: 87 Km; altitude 2800 m. BABBAGE 2 6 It is a strange cirque and has sort of a rectangular shape. The wallsare very high and look deeply damaged (an evidence of the ancient originof this crater). Inside we can find the young crater Babbage A(diameter: 26 Km; max altitude: 2450 m). Diameter: 135 Km; altitude 1900 m. BIANCHINI 2 5 We can locate it near the center of the arc represented by Sinus Iridumand Montes Jura. Its walls look sharp and bright, surrounding a ratherlight floor with a remarkable central mountain. Diameter: 40 Km; altitude 3000 m. BOUGUER 2 3 It is located between Mare Frigoris and Sinus Iridum. Diameter: 22 Km; altitude: 2500 m. CARPENTER 2 4 This young crater is observable during favorable libration because ofits latitude, between Anaximander and Anaximenes. Diameter: 40 Km; altitude: 2600 m. FOCAULT 2 3 It is a crater located between Montes Jura and Sinus Roris. Diameter: 22 Km; altitude: 2100 m. HARPALUS 2 4 It is located in Sinus Iridum; in the internal plain three off-centerpeaks can be identified together with other little secondary craters. Diameter:35 Km; altitude: 2850 m. J.HERSCHEL 2 4 Little crater located in the western part of Mare Frigoris, inside alarge formation which is a portion of the surface bordered by ridges. Diameter: 8 Km; altitude: 770 m. MAIRAN 2 6 Recent crater located west of Montes Jura. Its walls are particularlysharp. No central peak. Northwards, in Montes Jura, we can observe anarea of depression, Louville; it is difficult to identify it because ofits composition: dark dust lies in an uncertainly delimited zone. Crater diameter: 40 Km; altitude: 3400 m. MAUPERTUIS 2 3 It is located north of Promontorium Laplace, near Mare Imbrium. Diameter: 50 Km; altitude: 1600 m. OENOPIDES 2 8 It is located on the northern border of Sinus Roris, near Cleostratusand Xenophanes. In the northern zone, its walls were partially destroyedby a meteor impact which originated an easily observable crater. Inside,some particular formations (as crateric ones or fractures) can berecognized, but they are difficult objects for amateur telescopes. Thereis no problem with the observation of the central peak, which is verylarge. Diameter: 67 Km. PYTAGORAS 2 6 Its mountain ring has terraced slopes and its plateau is strewn withhills, clefts and little craters. It is one of the best preservedcraters on the lunar surface, even though its off-center position doesnot allow complete enjoyment of it. Observable mainly during favorablelibrations. Diameter: 120 Km; altitude: 4800 m. REPSOLD 2 3 Crater with a 112 km diameter, located near the northwestern edge of theMoon. Observable only in good libration conditions. SHARP 2 4 It is a rather young crater with external bastions up to 3200 m inaltitude; its diameter is around 35 km. Inside Sharp there is a wellpreserved central peak. XENOPHANES 2 6 It is on the northwestern lunar edge. It contains a double peak; thewalls are terraced, but quite low and collapsed. Its observation isrecommended only in case of favorable libration, because of its position(near the lunar edge). Diameter: 55 Km; altitude: 3150 m. ANAXAGORAS 3 6 97 Young crater, whose diameter is around 55 Km and whose ramparts are upto 2800 m high. It is located on the tablelands of the northern regionand has a mountainous central peak. It is quite bright and easilyrecognizable because it is in the center of a large system of rays,allowing an easy identification under any illumination condition. ANAXIMENES 3 5 Large cirque, located at high lunar latitudes. Its elliptical aspect iscaused by perspective. Its plain is very wrinkled, with many internalfractures, its ramparts are rather eroded and collapsed in some places. Diameter: 80 Km; altitude: 2450 m. ARCHYTAS 3 5 It is a crater located at high lunar latitudes, with a triple centralpeak. It looks elliptical because of the perspective effect. It can beobserved north of Mare Frigoris. Diameter: 34 Km; altitude: 2350 m. ARISTOTELES 3 6 It is located west of Lacus Mortis and south of Mare Frigoris. Itsdiameter is 100 km, and mountains in the border are up to 3700 m high.The eastern side of the external ring was partially destroyed by theyounger crater Mitchell. Two hilly wrinkles can be noticed in theinternal plateau. BAILLAUD 3 3 Large cirque at high lunar latitudes; it looks elliptical because of theperspectival angle and its diameter is 60 km. BARROW 3 5 In the far north of the Moon we can observe this crater, partiallydestroyed; the residual mountains in the ring still reach the height of3200 m. Some little secondary craterlets are placed in its floor. Diameter: 86 km. BOND 3 5 Large irregular cirque located north of Mare Frigoris. Its shape and thenumber of craters that partially destroyed its ramparts are clearevidences of its ancient origin. It is more easily observable inconditions of grazing illumination. CHR.MAYER 3 2 It is located north of Mare Frigoris. Diameter: 40 km; altitude: 2250 m. EGEDE 3 5 It is located south of Mare Frigoris and west of Aristoteles. In thesouthern external wall we can observe a little crater, like a diamondset in a golden ring. It has a dark plain. Diameter: 37 km; altitude: 420 m. EPIGENES 3 2 Diameter: 48 km; altitude: 2000 m. EUDOXUS 3 4 It is located west of Lacus Mortis. Inside, on its floor, many low hillssurround the central peak. Diameter: 65 km; altitude: 3350 m. FONTENELLE 3 5 Located north of Mare Frigoris, it has a central peak (not very high)with some little craters around it. It can be easily found because ofits high albedo. Diameter: 40 km; altitude: 1750 m. GALLE 3 2 Diameter: 20 km; altitude: 2300 m. GOLDSCHMIDT 3 6 Ancient crater near the North Pole of the Moon. It shows an ellipticalshape (124 x 113 km) and its walls reach a height of 2300 m. Inside wecan find another crater, whose origin is obviously more recent. Thetelescopic view allows the identification of many details in itsramparts. J.J.CASSINI 3 4 Large cirque, partially collapsed, located in the very northern borderof the Moon. It has a cracked surface, crossed by parallel tracks inthe north-south direction. KANE 3 3 It is a 52 km diameter cirque located on the northern shore of MareFrigoris. LAMECH 3 2 Diameter: 14 km. It is located southwest of Eudoxus. METON 3 6 Large irregular cirque located near the North Pole of the Moon, in azone with many ancient craters. Inside the plain is Meton B, clearlyvisible. Around Meton we can observe also other craters, such asEuctemon, Baillaud, Peterman and Cusanus. Diameter: 160 km; altitude: 2570 m. NEISON 3 2 It is a 58 km diameter crater on the northern border of the Moon. PHILOLAUS 3 5 Near Mare Frigoris it is possible to find this well-preserved crater. Insome observations a different hue was noticed, depending on the phaseangle. Diameter: 80 km; altitude: 3200 m. PIAZZI SMITH 3 2 It is located in Palus Nebularum. Diameter: 13 km; altitude: 1680 m. PLATO 3 9 Large and famous crater in the northern hemisphere of the Moon at 51° Nand 9° W, on the first spurs of the Alpes, directly north of MareImbrium. Its diameter is around 100 km and its bastions, up to 2000 mhigh, include a flat plane where, under particular illuminationconditions and with proper instruments, it is possible to notice four'ghost craters'. Its bottom is very dark (one of the lunar places withlowest albedo) and many TLP's were observed here. Plato is surely one ofthe craters best known by amateur astronomers. PROTAGORAS 3 3 It is located on the border of Mare Frigoris. Diameter: 24 km; altitude: 2100 m. ATLAS 4 8 63 It is located north of Lacus Mortis, near crater Hercules. Inside wecan observe many interesting details such as two concentric rings ofancient origin, valleys and hills with dark spots, apparently changingevery lunation. This phenomenon is certainly caused by the differentillumination angles and the relative shadow appearance, but it is stillunder investigation. Diameter: 86 km; altitude: 3000 m. BAILY 4 3 It is located between Mare Frigoris and Lacus Mortis. Diameter: 20 km; altitude: (only) 540 m. BUERG 4 5 Geologically young crater located just in the center of Lacus Mortis at45° N and 28° E. Its concave floor has a diameter of 45 km. Buerg iseasily recognizable because of the high central peak and the crater inthe center. DE LA RUE 4 6 It is a partially destroyed crater; it has a large diameter (about 130km) but very low walls. In the center of its floor there is a littlecrater, and two other well-defined craters (Strabo and Thales) arelocated near the northeastern border. Thales has also its own raysystem. DEMOCRITUS 4 5 It is located at the very northern edge of the Moon, beyond MareFrigoris. Going east, we can find two craters with rather low walls:Kane and Moigno. The last one has a dark plain. Diameter: 37 km; altitude: 1950 m. ENDYMION 4 5 It is a young crater, with a very dark floor crossed by thin clefts;these details are quite hard to be seen even with powerful telescopes.Its mountain ring reaches a height of 4600 m, and has a diameter of 130km. GARTNER 4 6 It is destroyed, but not completely: it can be described as a sort ofbay of Mare Frigoris, whose basaltic lavas covered it as far as itsnorthern bastions. Therefore, now it looks like a sharp, well-definedsemicircle. A lot of clear details are visible on its floor through atelescope. Diameter: 100 km; altitude: 1300 m. HERCULES 4 5 Large crater located north of Lacus Mortis, characterized by bright andterraced walls on its peripheral ring. Its plain contains a prominentcrater, rich of details. Diameter: 75 km; altitude: 3200 m. HOOKE 4 2 It is located west of Messala. Diameter: 42 km; altitude: 2250 m. MERCURIUS 4 4 It is located on the northeastern border of the Moon, thus its shapelooks elliptical because of the perspective deformation. Diameter: 53 km. MITCHEL 4 2 It partially overlaps Aristoteles. Diameter: 25 km; altitude: 1250 m. PLANA 4 3 We can find this crater in the belt dividing Lacus Mortis from LacusSomniorum. Diameter: 40 km; altitude: 1020 m. SCHUCKBURGH 4 3 It is near the northeastern edge of the Moon and its shape isperspectively deformed. Diameter: 48 km. STRABO 4 6 It is a neighbor of crater De La Rue, and its peripheral mountains arequite high. Its floor, even if collapsed, is rather smooth. It is in thecenter of a little ray system, fuzzy in comparison with the one of thenearby Thales. Diameter: 55 km; altitude: 3750 m. STRUVE 5 3 3 It is located near the northern border of the Moon; its shape iselliptical (60 x 90 km) and the mountains reach the height of 2000 m. ARISTARCUS 6 9 25 In spite of the small size (diameter: 45 km; altitude: 3600 m), we cansurely consider Aristarcus as one of the most famous craters on theMoon. Such fame is due to its brightness: in fact it is the brightestplace on the lunar surface, with an albedo around 18%. Probably it canbe identified even with the naked eye. It clearly stands out against thegray-green background of Oceanus Procellarum, and it is visible alsowhen it is covered by the lunar night shadow, under the faintearthshining. Inside Aristarcus some TLP's were observed. HERODOTUS 6 5 Near Vallis Schroeter and Aristarcus we can recognize this littlecrater, with a non perfectly regular shape. Its dark bottom is incontrast with the brightness of Aristarcus. Diameter: 37 km; altitude: 6440 m. SELEUCUS 6 3 It is a young crater with an external ring, large terraces and a clearcentral peak. Diameter: 48 km; altitude: 2300 m. SCHIAPARELLI 6 4 Under intense illumination, it is easy to find this crater because ofbright stripes departing from it in direction southeast. Diameter: 29 km; altitude: 2090 m. ULUGH BEIGH 6 4 It is located on the western edge of the Moon and thus it is observableonly during favorable librations. Its central mountain is the highestpoint of a long ridge. Diameter: 48 km; altitude: 1650 m. BRAYLEY 7 5 53 It is a young crater in Oceanus Procellarum, easily identifiable for itsisolated position. It has a hilly central peak and radial fissures onthe plain. Brayley B is its little bright neighbor, located southwest of the main crater. Diameter: 16 km; altitude: 2310 m. CARLINI 7 3 It is a young crater located in an isolated position in Mare Imbrium.The central hill is well preserved. Diameter: 11 km; altitude: 1670 m. CAROLINE HERSCHEL 7 6 It is a young little crater located in Mare Imbrium, south ofPromontorium Heraclides. A breach interrupts its mountain ring in thesouthern part. Its particular position makes it quite evident, with sortof an elevation with respect to the soil. Diameter: 6 km; altitude: 900 m. DELISLE 7 5 It is easily identifiable on the western border of Mare Imbrium. Itforms a nice pair with Diophantus, located further south. Near thecenter the typical peak is present. In this area of the Moon we can findand admire some domes. Diameter: 26 km; altitude: 2420 m. DIOPHANTUS 7 4 It is located on the western border of Mare Imbrium. We can clearly seea cleft departing from the northern side of the crater. It has a sharpcentral peak. Diameter: 21 km; altitude: 2590 m. EULER 7 5 This little crater is located in the middle of Mare Imbrium. It has avery bright ray system, allowing us to recognize this crater also inconditions of faint illumination. Its ring is internally terraced. Diameter: 28 km; altitude: 2200 m. HEIS 7 2 Little crater (diameter: 12 km) on the western border of Mare Imbrium. HELICON 7 4 It can be distinguished from the near Leverrier because of acharacteristic central crater. It is located in Mare Imbrium. Diameter: 21 km; altitude: 2250 m. LAMBERT 7 4 Young little bright crater, with a central peak. Under grazingillumination a long valley may be seen around the outer western slope. Diameter: 29 km; altitude: 2400 m. LEVERRIER 7 3 Little crater in Mare Imbrium. It is hard to observe the central peakunder bright illumination conditions. Diameter: 18 km; altitude: 2150 m. PRINZ 7 3 It was partially destroyed by magma coming from Oceanus Procellarum,especially in the southwestern edge. Diameter: 48 km; altitude: 1080 m. PYTHEAS 7 4 Young little bright crater in Mare Imbrium. We can notice a central peakon its floor. It has a ray system, quite conspicuos if compared with thecrater size. Diameter: 20 km; altitude: 2400 m. TOBIAS MAYER 7 5 It is a little crater just embedded in Montes Carpathi, in theborderland between Mare Imbrium and Oceanus Procellarum. This region ismade interesting by many domes and clefts. Diameter: 35 km; altitude: 1600 m. ALEXANDER 8 4 61 It is a really ancient "ghost cirque." Its dark floor has two brightspots. Proper telescopes allow the observation of hilly ripples and ofmany craterlets. Diameter: 100 km. AUTOLYCUS 8 7 It is located near Palus Nebularum and has a concave floor, reminding ofa soup-plate. It is a neighbor of Aristillus. Under a particularillumination angle Autolycus shows an unusual ray system. In grazinglight it is possible to recognize some clefts in radial arrangementgoing toward the external part of the crater. Diameter: 38 km; altitude: 3000 m. ARCHIMEDES 8 6 Inside this ancient cirque we can find many craterlets. It is thelargest crater in Mare Imbrium and, together with Aristillus andAutolycus, forms an easy recognizable triangle. Some peaks are locatedin the ramparts, but they are not too steep because Archimedes is anancient crater. Diameter: 98 km; altitude: 2060 m. ARISTILLUS 8 7 It is located very close to Palus Nebularum and crater Autolycus. Itsdiameter is 53 km large and its mountain ring reaches 3200 m. Thecentral peak has three summits. The external part of this crater iscrossed by deep radial valleys. Its floor is quite interesting toobserve because it contains many details, such as peaks, fissures andcraterlets. Its floor brightness seems to change every lunation. CALIPPUS 8 3 It is embedded in the northern zone of Montes Caucasus. Diameter: 30 km; altitude: 2990 m. CASSINI 8 6 In Palus Nebularum it is possible to see this cirque with low walls. Twocraters called Cassini A (diameter: 15 km) and Cassini B (8 km) are onits floor. In 1952 Wilkins and Moore discovered in Cassini A a verylittle crater whose shape suggested them the nickname 'Washbowl'. Thisdiscovery was made at the Paris Observatory using an 83 cm refractor. ERATOSTHENES 8 4 It is a young crater with a central peak with many summits and a veryhigh mountain ring. On the external side of the ramparts we can findvalleys and many clifts. Diameter: 60 km; altitude: 3900 m. KIRCH 8 3 This little crater can be found in Palus Nebularum, north of MontesSpitzbergen. Diameter: 10 km; altitude: 1700 m. LIMNEUS (or LINNE') 8 4 It is located in the center of a bright spot in Mare Serenitatis. Thiscrater is under control because it is interested by TLP. Diameter: 900 m; altitude: 30 m. MANILIUS 8 5 It is easily identifiable because it stands out from the floor of MareVaporum. Its bright walls are terraced and a sharp central peak can befound inside. On the ground, just near the peak, we can notice somedetails. Diameter: 40 km; altitude: 2840 m. TIMOCHARIS 8 7 It is located in Mare Imbrium, west of Archimedes. Similar to Lambert,it contains a little crater. Timocharis is in the center of a ray systemwhich is not very bright, but is easily identifiable when the Moon isfull. The astronomer Barcroft reported some darkenings inside the craterring. Diameter: 40 km; altitude: 2870 m. WALLACE 8 5 South of Mare Imbrium we can observe this crater, almost flooded bylava. The remnants of its mountain ring are 390 m high. Probably it wasoriginated before Mare Imbrium. In this area we can find superficialfractures and hilly alignments. Diameter: 24 km. BERZELIUS 9 4 83 This crater is located west of Messala. It includes, in the internalzone, a central peak standing out from the dark and flat floor. Diameter: 12 km; altitude: 1650 m. BESSEL 9 4 It is one of the few craters visible in Mare Serenitatis. It lies on abright streak coming from crater Menelaus. Diameter: 20 km; altitude: 1590 m. CEPHEUS 9 5 It is located in the southeastern part of Lacus Mortis, near the craterFranklin. The ring is broken in the northwestern side by Cepheus-A, avery bright impact crater. Between Cepheus and Franklin we can recognizea nearly destroyed ring. Diameter: 44 km; altitude: 2800 m. CHACORNAC 9 6 This crater has an almost pentagonal shape; it is recognizable becauseit is located on the border of Mare Serenitatis, between the craterPosidonius and the half-destroyed cirque Le Monnier. There are manyinteresting details on the floor, for instance some fractures of mediumsize. Diameter: 50 km; altitude: 1950 m. DANIELL 9 3 It is located just north of Mare Serenitatis. Diameter: 30 km; altitude: 1850 m. DAWES 9 6 This deformed crater is located between Mare Tranquillitatis and MareSerenitatis, east of Promontorium Acherusia. Two belts of dark groundstart from the central peak and go toward the internal walls of thewestern side. The first belt was discovered in 1952. Diameter: 23 km; altitude: 1800 m. FRANKLIN 9 4 It is located in the northeastern area of the Moon. Inside we can noticea concentric ring of ancient origin. Diameter: 53 km; altitude: 2700 m. GROVE 9 3 It can be found between Lacus Somniorum and Lacus Mortis. Diameter: 24 km; altitude: 2370 m. JANSEN 9 3 This little crater is located in Mare Tranquillitatis. Probably it has arecent origin. Diameter: 35 km. LE MONNIER 9 7 It is one of the few collapsed formations in this part of the Moon. Itappears like a little bay indenting the 'shore' of Mare Serenitatis:its west side was destroyed by lava coming from Mare Serenitatis. Beyond its eastern ramparts there is the light-colored upland area knownas Montes Taurus. Its floor shows some slight details. Diameter: 54 km; altitude: 2200 m. LYELL 9 3 It is a crater located on a tableland between Palus Somnii and MareTranquillitatis. Diameter: 30 km. MARALDI 9 3 This crater is linked to Mare Serenitatis (just south of Maraldi) by alava belt. Diameter: 43 km; altitude: 1300 m. NEWCOMB 9 4 It is located east of Cleomedes. West of Newcomb we can find a littlesharp crater called Kirchhoff. Diameter: 52 km; altitude: 4000 m. PLINIUS 9 7 It is a young crater located in the plain dividing Mare Tranquillitatisfrom Mare Serenitatis. In close proximity we can observe four 'rimae'(that is sort of channels) departing from Promontorium Acherusia. Itlooks quite twisted and its central mountain is a craterlet. Plinius hasvery high and terraced walls and it is clearly visible under anyillumination condition. POSIDONIUS 9 8 This large crater is surely an ancient one. This fact is proved by thepartially destroyed walls and by the floor, covered in recent time bylava coming from underneath the crust of the Moon. Near the center isPosidonius-A, a little crater (diameter: 10 km; altitude: 1100 m),younger than Posidonius, well-recognizable for its bright aspectcontrasting with the dark background. Diameter: 100 km; altitude: 1800 m. ROMER 9 6 The internal plain contains a very high mountain in which, just near thetop, we can see a central chasm remembering a volcanic crater. MontesTaurus begin here, extending in direction northwest up to craterNewcomb; they are not true mountains, but more properly a tableland witha hill system. Diameter: 40 km; altitude: 3400 m. VITRUVIUS 9 7 It is located north of Mare Tranquillitatis; it is an interestingformation and in its neighborhood we find Montes Agreus. The walls arebright but the floor is definitely dark and contains a modest centralpeak. Just southwest we find crater Jansen. Inside Vitruvius there isFischer, a craterlet with no particular characteristic. Diameter: 34 km; altitude: 2300 m. BEROSUS 105 37 It is observable only in particular illumination conditions; it islocated on the eastern border of the Moon, and it looks quite ellipticalfor the well-known perspectival effect. Diameter: 75 km; altitude: 3600 m. BURCKHARDT 103 This crater is located on the northeastern edge of the Moon, betweenCleomedes and Geminus. Diameter: 56 km; altitude: 4840 m. CLEOMEDES 107 It is one of the most ancient formations with an impact origin on thesurface of the Moon. It has an elliptical shape, with axes 145 and 130km long. Its mountains are less than 3000 m high. Inside it and alongits ramparts we can observe many craterlets with diameters of less than20 km and altitudes around 1000 m. Cleomedes is interrupted by Tralles(diameter: 44 km), a particularly deep crater. GEMINUS 106 It is a young crater, young in comparison with the age of the Moon; itcan be interesting to note the different aspect of the nearby oldcraters Messala and Cleomedes. Its walls are very steep and high. It hasa central peak, some hilly ripples on its floor and many minorcraterlets. Diameter: 87 km; altitude: 5400 m. MACROBIUS 104 This crater is located west of Mare Crisium and has a modest centralmountain. Between Macrobius and Mare Crisium we can recognize the craterTisserand. Diameter: 67 km; altitude: 3700 m. MESSALA 105 Placed north of Mare Crisium, this cirque has a mountain ring which israther low by now, and collapsing. Its plain is wrinkled, crossed byclefts and scattered by many craterlets. All this characteristicssuggest an ancient origin. Diameter: 125 km. TISSERAND 103 It can be found northwest of Mare Crisium. Diameter: 48 km; altitude: 2750 m. YERKES 104 It is a ghost-crater on the western shore of Mare Crisium. The mountainborder of Mare Crisium is broken, east of Yerkes, by a gap enclosed bytwo promontories, Lavinium in the south and Olivium in the north. CAVALERIUS 115 41 It has a rather recent origin. It has a mountain crest inside. Manydetails can be seen when the terminator is close to this crater.Westwards there is a superb example of dome with a crater on its top. Diameter: 64 km; altitude: 3000 m. DAMOISEAU 113 It is located directly east of crater Grimaldi. Its plain is crossed byan internal fault . Diameter: 35 km; altitude: 1200 m. FLAMSTEED 113 It is a young crater with a high albedo; this characteristic is directlylinked to its recent origin. Diameter: 20 km; altitude: 1700 m. GRIMALDI 116 It is a very large cirque (a 'walled plain') on the western border ofthe Moon at 6°S and 68°W. On the inner northeast wall is the brightcrater Saheki, formerly Grimaldi B. Its floor is unusually dark, with areflectivity of only 6% and a color typical of maria. Diameter: 240 km; altitude: 2000 m. HEVELIUS 114 Its floor is convex and contains a central mountain and a system of fourclefts: three of them are easily observable. Diameter: 110 km; altitude: 2000 m. LETRONNE 114 This is a crater which assumed the shape of a bay in Oceanus Procellarumbecause its ramparts were partially destroyed. Diameter: 113 km; altitude: 1200 m. MARIUS 115 It is a common opinion that it is connected to a system of corrugationsand hills in Oceanus Procellarum. Inside we can observe a central hill(not very high) and some bright stripes. Diameter: 40 km; altitude: 1670 m. REINER 114 It is surrounded by craters with a diameter of 5-6 km, well visible inOceanus Procellarum because of the isolated position; it has brightwalls but a dark floor. Diameter: 27 km; altitude: 2580 m. RICCIOLI 114 It is located near the western edge of the Moon, behind the large cirqueGrimaldi. It has a dark floor and its bad state is evidence of itsancient origin. Diameter: 160 km; altitude: 2250 m. ROCCA 113 This crater is located on the western border of the Moon, south ofGrimaldi. Diameter: 98 km; altitude: 2160 m. BOMPLAND 124 72 In the southern part of the promontory dividing Mare Nubium from OceanusProcellarum, directly south of Fra Mauro, we can observe this crater,characterized by very sharp borders. Diameter: 58 km. COPERNICUS 1210 It is one of the most famous craters of the Moon. It has a centralmassif with numerous peaks. Copernicus is the center of a ray systemwhich, even though smaller in dimensions, is more symmetrical andregular than the one of Tycho. The rays albedo is 16%, really very high.It is possible to notice many craterlets out of the ramparts, some inradial allignment and with a real elliptical shape. These particulardetails lead us to think they were formed directly by the same impactwhich originated Copernicus, as secondary craters. Diameter: 90 km; altitude: 3800 m. EDDINGTON 122 It is an elliptical crater (150x180 km) of recent formation. EUCLIDES 123 This is a small crater located in Oceanus Procellarum near MontesRiphaei. Diameter: 13 km; altitude: 700 m. FRA MAURO 125 It is an ancient half-destroyed cirque; its plain was invaded by magmacoming from Oceanus Procellarum. The ramparts are now destroyed, andwe can recognize only some peaks, 70 m high. Inside, some craterlets andtwo clefts. Diameter: 80 km. GAMBART 123 Little odd-shaped crater in Oceanus Procellarum, near the lunar equator.Diameter: 25 km; altitude: 1090 m. GUERIKE 124 This name denotes the remains of an ancient cirque. Its plain is incommunication with Mare Nubium through a gap in its ring, a sort ofvalley looking like a cleft. Diameter: 53 km; altitude: 670 m. HORTENSIUS 126 This crater is located between Copernicus and Kepler in OceanusProcellarum. It is well-formed, with bright walls. Northwards it ispossible to observe a system of domes, many of these with a cavity onthe top; such detail can be revealed only by large telescopes. Diameter: 16 km; altitude: 2390 m. KEPLER 1213 It is a very young crater. It has a central mountain and its rampartsare so terraced that in some points they look 'double'. The small, deepcrater Kepler-A is located southwest of the principal one. Furthermore,Kepler (as the brighter Aristarchus) shows radial belts. It is locatedin the center of a region with a certain geological interest; Hackman in1962 drew a map of this area, where the next year a TPL was observed. Infact, twice in the night between 1963 November 1 and November 2 a largeregion around Kepler assumed a reddish colour. It is presumed that thiswas caused by a high-energy particle bombardment, deriving from a solarflare. This phenomenon was supported by photographs taken at the Pic duMidi Observatory by Z. Kopal and T. Rackman. Diameter: 35 km; altitude: 2250 m. LANSBERG 124 It is a young crater whose reflectivity is 12%; it forms a fine pairwith Reinhold. Its central mountain has multiple peaks. Diameter: 38 km; altitude: 3250 m. MILICHIUS 125 Young crater in Oceanus Procellarum located between Kepler and the largeCopernicus. In its internal plain we can see some hills on thenortheastern side. Eastwards, there are some domes; one of these has acavity on the top. Diameter: 13 km; altitude: 1600 m. PARRY 123 Ancient crater with fragmentary walls located just south of the largehalf-destroyed cirque Fra Mauro. Diameter: 42 km; altitude: 1450 m. REINHOLD 124 This crater, in Oceanus Procellarum, is observable south of Copernicus.Its outer ring shows many interesting details, like its neighborLansberg. Diameter: 48 km; altitude: 3000 m. TURNER 123 Little crater located northwest of Fra Mauro. Diameter: 12.5 km; altitude: 1850 m. WICHMANN 123 It is a small crater, clearly identifiable in Oceanus Procellarum. Diameter: 9.5 km. AGRIPPA 133 90 It is located near Rima Hyginus and has a central peak. Southwards thereis the crater Godin. Diameter: 48 km; altitude: 3000 m. ALBATEGNIUS 134 It is one of the largest craters on the lunar surface. It is ratherancient and it is possible to identify the crater Klein on its floor. Diameter: 120 km; altitude: 4000 m. ANDEL 132 Diameter: 30 km; altitude: 1300 m. BODE 135 Very bright crater located on a tableland dividing Sinus Medii fromSinus Aestum. It has a clear color and it is in the center of a raysystem originated by the same impact which formed the crater. Diameter: 18 km; altitude: 1800 m. DAVY 134 This deep crater, with a low central mountain, can be found between MareNubium and Ptolemaeus. Diameter: 32 km; altitude: 1350 m. DEMBOWSKY 132 It is located near Sinus Medii. Diameter: 21 km. FLAMMARION 134 This half-destroyed cirque of ancient origin is located south of SinusMedii. Its floor looks rather dark. Diameter: 72 km. GYLDEN 133 This is an ancient half-destroyed cirque located between Ptolemaeus andHipparcus. Diameter: 60 km. GODIN 133 It has a central peak. On the south there is a valley shaped like atrumpet. Diameter: 43 km; altitude: 3200 m. HERSCHEL 133 This crater is located just south of Ptolemaeus. Diameter: 45 km; altitude: 3900 m. HORROCKS 133 Little bright crater of recent formation, inside Hipparcus; it shows amodest central peak. Diameter: 30 km; altitude: 2820 m. LADE 133 It is an ancient crater, now in ruins. Its shape is nearly hexagonal. Diameter: 58 km. LALANDE 134 Its bed was partially flooded by lava coming from Sinus Medii; it hasbright terraced walls. Diameter: 23 km; altitude: 1900 m. MOSTING 137 This is a little crater located near the center of the visiblehemisphere of the Moon; it is rather brilliant for its young age. It isfamous because it is used as 'landmark' for the calculation of theabsolute coordinates of all the other lunar formations. In its closeneighborhood it is possible to find the craterlet Mosting-A (diameter:11 km; altitude: 2390 m). Diameter: 26 km; altitude: 3000 m. MURCHISON 135 It is located near the center of the visible hemisphere of the Moon; itforms a pair with Pallas on the shore of Sinus Medii. It has erodedborders and a very contorted outline. This crater is clearly very oldand its walls are low and discontinous. Diameter: 56 km. PALLAS 136 Located near Murchison, it is better preserved than this crater.However, the mountainous ring is damaged in some points, and there aresome gaps, with no difference in altitude between the internal and theexternal plain. Diameter: 48 km; altitude: 1780 m. PTOLEMAEUS 138 It is one of the most perfect examples of a 'walled plain' on the Moon'ssurface. It has an hexagonal form and it is bounded on all sides bydiscontinous ramparts. Ptolemaeus is so large that if we stood in themiddle of the floor, we would not be aware of being inside a craterbecause the walls would be out of sight, below our horizon. Under verylow angle illumination the floor is seen to be covered with manysaucer-like depressions. Diameter: 140 km. REAMUR 133 It is an ancient half-destroyed crater on the southern shore of SinusMedii. Diameter: 54 km; altitude: 1300 m. SAUNDER 132 Ancient half-shattered crater. Diameter: 47 km. SCHRÖTER 133 This crater is located on the western border of Sinus Medii. Diameter: 32 km; altitude: 1020 m. SPORER 132 It is located southeast of Flammarion. Diameter: 21 km; altitude: 680 m. STADIUS 133 This ghost-cirque is located west of Sinus Aestum; it is completelycovered by lava. Diameter: 66 km; altitude: 60 m. TEMPEL 132 This crater is located near Mare Vaporum. Diameter: 46 km. TRIESNECHER 136 It is located in Mare Vaporum, near Sinus Medii. It has a centralmountain with a small crater on the top. This crater is associated withone of the best known system of clefts; some of these clefts can be seeneven with modest telescopes, but the entire system requires largeapertures and optical excellence. Diameter: 28 km; altitude: 2900 m. ARAGO 147 91 This crater is located on the western edge of Mare Tranquillitatis. Itsfloor has a central elevation, in addition to the classical peak. Goingin direction southwest, we can see a low and imperfect ring calledLamont, and to the southeast of Arago it is possible to see the brightcrater Manners, 16 km in diameter. Eastwards there are several domes. Diameter: 29 km; altitude: 1800 m. CAPELLA 144 It is just north of Montes Pyrenaei and Mare Nectaris. It slightlyoverlaps the crater Isidorus and so we can argue that it is younger thanthe other. Diameter: 48 km; altitude: 3250 m. CAUCHY 145 It is brilliant and easily identifiable. The main feature in this areais not the ring itself, but the two long clefts ( called Cauchy I andCauchy II) running on each side of the crater. Diameter: 13 km; altitude: 1800 m. CENSORINUS 143 Very little crater on the southern border of Mare Tranquillitatis. Diameter: 5 km; altitude: 300 m. DELAMBRE 144 It has a polygonal outline and terraced ramparts. The little cratersTheon Junior and Theon Senior are in its neighborhood. Diameter: 53 km; altitude: 3500 m. DESCARTES 142 Diameter: 48 km; altitude: 900 m. DIONYSIUS 145 Little crater located on the western shore of Mare Tranquillitatis. Itlies in an area characterized by clear terrains and it appears verybright under illumination from high angles. In 1950 F. Thornton found adark belt near the northern wall. Diameter: 19 km; altitude: 2700 m. GUTEMBERG 144 It is located in Montes Pyrenaei on the border of Mare Foecunditatis. Itwas partially filled by lavas coming from the near Mare. Diameter: 72 km; altitude: 2280 m. ISIDORUS 144 West of Monter Pyrenaei, it is possible to observe this crater connectedto Capella through several clefts. Diameter: 41 km; altitude: 3000 m. JULIUS CAESAR 146 This crater is irregular, half-destroyed, imperfect, oblong in thenorth-south direction and its borders have been almost completely wipedout. It is located near Mare Vaporum, south of Montes Haemus. It is oneof the darkest impact formations on the entire visible face of the Moon.Diameter: 80 km; altitude: 3400 m. KANT 144 It is a deep ring plane with a double rampart. The inner walls areterraced and there is a bright central peak. Diameter: 32 km; altitude: 2700 m. MACLEAR 144 It is a crater, 26 km in diameter, located in the plain of MareTranquillitatis, near the crater Ross. West of both we find asuperficial cleft running on and beyond the crater Sosigenes-A. MÄDLER 143 It is located between Mare Nectaris and Mare Tranquillitatis. Diameter: 32 km; altitude: 2000 m. MASKELYNE 146 This young crater is located near the center of Mare Tranquillitatis. Ithas well-defined walls, terraced in the internal part, containing asharp central peak. Eastwards we can observe a smaller twin-cratercalled Maskeline-B. Diameter: 28 km; altitude: 2500 m. MENELAUS 145 It is located in Montes Haemus and has a central peak in its plain. Itcan be called a 'banded crater' because two light streaks depart fromhere to cross Mare Serenitatis, arriving reaching the crater Bessel,northwards. Diameter: 32 km; altitude: 2800 m. RITTER 145 It is located on the western border of Mare Tranquillitatis. Togetherwith the near Sabine it forms a twin pair; it is very bright. NearRitter we can observe two other little bright coupled craters. In thecenter there is an evident mountain. Diameter: 30 km; altitude: 1300 m. ROSS 146 This crater is located in Mare Tranquillitatis, south of Plinius. Ithas a central peak. The crater MacLear lies in direction southwest; westof both we can find a superficial cleft running on and beyond the craterSosigenes-A. Diameter: 28 km; altitude: 1800 m. SABINE 143 Crater located on the western border of Mare Tranquillitatis. Diameter: 30 km; altitude: 1300 m. THEOPHILUS 147 It is a crater of recent formation, located on the passage between MareNectaris and Mare Tranquillitatis. Its ramparts are high, steep andterraced. The principal characteristic is the triple central peak. Thisplain is convex and this makes it difficult to measure altitudes withthe method of shadows. Diameter: 100 km; altitude: 5500 m. TORRICELLI 144 It is located in the southern part of Mare Tranquillitatis, on a darkmarial surface. It consists of two coalesced craters. Diameter: 29 km; altitude: 2100 m. APOLLONIUS 154 49 It is located on the promontory dividing Mare Foecunditatis, MareSpumans and Mare Undarum. Two little craters lie on its western walls. Diameter: 50 km; altitude: 1700 m. CONDORCET 153 Crater located near Promontorium Olivium in Mare Crisium. Diameter: 73 km. DA VINCI 152 It is a little crater, 40 km in diameter. FIRMICUS 155 Crater located on the eastern edge of the Moon, close to Mare Undarum.Its floor is very dark. Between Firmicus and Mare Crisium we can findthe crater Azout, 32 km in diameter, with a central peak. Diameter: 56 km; altitude: 1700 m. GOCLENIUS 153 There are several hills and clefts inside this crater. Diameter: 50 km; altitude: 1500 m. LANGRENUS 154 This relatively young crater has a double central peak. In its closeneighborhood there are many craterlets, geologically connected with itsorigin. Diameter: 135 km; altitude: 2600 m. LICK 152 Ghost-crater in Mare Crisium. MESSIER 156 It is located in Mare Foecunditatis. Under particular illuminationconditions it is possible to clearly notice some bright 'ejecta' indirection east-west; this fact is a proof of its formation as aconsequence of a grazing impact. It is close to Pickering (formerlyMessier-A). Diameter: 15 km; altitude: 1700 m. NEPER 156 It is very close to the eastern edge of the Moon. In conditions offavorable libration it is possible to observe a group of hills near thecenter of the ring. Located between Mare Marginis and Mare Smythii, itssuperficial composition is probably very similar to the one of the lunarseas. Diameter: 52 km. SECCHI 154 It is a little irregular crater with an even smaller crater on its side.It is located in an area full of clefts, dividing Mare Foecunditatisfrom Mare Tranquillitatis. Diameter: 27 km. TARUNTIUS 157 This is an ancient crater; its central mountain has a hole on its top.It is possible to recognize an external concentric ring, 60 km indiameter, sometimes indicated as the border of the crater. It is locatednear Secchi, in a zone with many clefts dividing Mare Foecunditatis fromMare Tranquillitatis. Diameter: 27 km; altitude: 1200 m. WEBB 153 It is located on the west side of Mare Foecunditatis. Its mountain ringis broken in the northern zone by a deep cleft. Diameter: 22 km. BILLY 164 21 It can be seen on the borderland of Mare Foecunditatis; its floor isflat and dark with two light spots and two small craterlets. Diameter: 50 km; altitude: 1200 m. CRUGER 163 This cirque is characterized by a very dark floor and is not very large.Diameter: 48 km; altitude: 500 m. LACROIX 163 Irregular crater; its shape is modified also by the perspective. Diameter: 50 km. LIEBIG 164 It is a crater located on the western border of Mare Humorum, at 24°Sand 48°W, called also Mersenius-A. Diameter: 39 km; altitude: 1500 m. MERSENIUS 164 It is located near the cirque Gassendi, which is connected to Merseniusby some clefts. It has a convex floor with several tracks andcraterlets. Diameter: 72 km; altitude: 2300 m. ZUPUS 163 This crater is elliptical (47x35 km) and is located south of OceanusProcellarum. Altitude: 1320 m. AGATHARCHIDES 173 60 It is located on the 'isle' dividing Mare Nubium, Mare Humorum andOceanus Procellarum. Diameter: 48 km; altitude: 1500 m. BULLIALDUS 175 Crater on the western border of Mare Nubium. It is one of the finestcraters on the lunar surface, a sort of miniature version of Copernicus.There are four peaks near the center, and the inner slopes of the wallsare clearly terraced. Diameter: 61 km; altitude: 2400 m. CAMPANUS 175 This crater is located near Palus Epidemiarum, close to Mercator. Itsfloor is slightly lighter in comparison with the other craters in thevicinity and its level is 300 m under that of Palus Epidemiarum. Diameter: 48 km; altitude: 2000 m. CAPUANUS 175 Ancient crater, half-destroyed by lava, which a floor higher than thesurrounding land. The large low domes on its dark floor are remarkable.Three projections stretch out from its walls, over Palus Epidemiarum. Diameter: 58 km; altitude: 2450 m. CICHUS 174 It is located on the 'shore' of Palus Epidemiarum. Two low hills are onits floor. One of the bright rays of Tycho runs close to the rim ofCichus. Diameter: 32 km; altitude: 3700 m. CLAUSIUS 172 Diameter: 21 km; altitude: 2450 m. DOPPELMAYER 176 It is located on the southern border of Mare Humorum (28°S 41°W). Thepart of the ring wall lying on the surface of Mare Humorum has almostentirely disappeared. A high mountain stands in the center of the plainand is cut into two parts by a ravine. Diameter: 65 km; altitude: 1600 m. GASSENDI 177 This 'walled plain' is one of the most beautiful lunar formations. Itswalls are complete, except on the south, where a gap is present: in thepast the fluid lava of Mare Humorum flooded the southern part of thefloor. There is a splendid group of peaks. Gassendi is characterized bya variety of details in its interior, among which are about 30 clefts. Diameter: 85 km; altitude: 3000 m. HERIGONIUS 172 Crater in Oceanus Procellarum. Diameter: 14 km; altitude: 1700 m. LUBINIETZKY 174 Elusive crater located in the zone considered as a sort of borderlinebetween Mare Nubium and Oceanus Procellarum. Its walls are broken and astreak crosses the floor. Diameter: 38 km; altitude: 300 m. MAX WOLF 173 It is a half-destroyed crater in Mare Nubium. Diameter: 26 km; altitude: 690 m. MERCATOR 174 It is located near Palus Epidemiarum; it forms a nice pair with the nearcrater Campanus. Its floor is rather dusky. Diameter: 40 km; altitude: 1300 m. RAMSDEN 175 It is located in Palus Epidemiarum. From its external sides, in thenorthern and southern parts, several clefts run on the surface. Inside,near the western rim, there is a very bright clear spot. Diameter: 30 km; altitude: 1950 m. VITELLO 175 This fine crater is located on the southern border of Mare Humorum. Itsmain feature is a bright inner ring not quite concentric with respect tothe main wall; also a central mountain is present. Diameter: 45 km; altitude: 1600 m. ALIACENSIS 186 98 This cirque is located at 31°S and 5°E, in the most craterized area ofthe Moon. It has very high and terraced walls. When the illuminationangle is suitable, the inner slope shows lots of complex and finedetails. It has also a fellow, called Werner. Diameter: 85 km; altitude: 5200 m. ALPHONSUS 187 It is located south of Ptolemeus and north of Arzachel, on the border ofMare Nubium. Its walls are very broad and complex; its central mountainis part of a longitudinal ridge. The floor has lots of interestingdetails, among which are some dusky spots clearly visible underillumination from a high angle. Three of these spots are connected by awinding cleft. Diameter: 110 km; altitude: 2000 m. APIANUS 183 It is located at 27°S and 8°E; it shows a dark grey floor without muchdetail. Diameter: 63 km; altitude: 2700 m. ARGELANDER 183 It can be found near Albategnius. Its main feature is a double centralpeak. Diameter: 32 km. ARZACHEL 186 This is a well-defined large cirque, located on the border of MareImbrium, just south of Ptolemaeus and Alphonsus. Its walls are massiveand have complex terraces. There are over 25 hills and craterlets on itsfloor, and a deep crater known as Arzachel-A. Diameter: 100 km; altitude: 3700 m. AZOPI (& ABENEZRA) 185 It forms a close pair with Abenezra. It has a dusky interior with somelight spots. Its fellow Abenezra (43 km in diameter) seems to be cut bya curved ridge under morning illumination. Diameter: 45 km; altitude: 3300 m. DESLANDRES 188 It is a very ancient formation, an immense irregular-shaped plain knownalso as Hoerbiger and called Hell Plain. Nothing to do with infernalregions: Hell is an internal crater and is named after a Hungarianastronomer. The floor of Deslandres, partially filled by lava comingfrom Mare Nubium, is covered by many details, creating a veryinteresting spectacle under low angle illumination. No remarkablerampart is present. Diameter: 200 km. GAURICUS 184 This half-destroyed crater has an elliptical shape and irregularborders. It shows only some modest details on the floor. Diameter: 65 km; altitude: 2700 m. GOODACRE 183 Little fine crater on the walled plain called Gemma Frisius. Diameter: 48 km; altitude: 3150 m. HELL 183 Little crater, 32 km in diameter, located inside the ghost-craterDeslandres. LACAILLE 182 Diameter: 65 km; altitude: 2760 m. LASSEL 183 It is a little low-walled ring in Mare Nubium. It is difficult to seeits small central mountain. Diameter: 22 km; altitude: 930 m. LEXELL 184 It is a half-destroyed crater, properly a partial ring. It looks like abay on the southern border of Deslandres. Diameter: 63 km; altitude: 2150 m. MILLER 183 It is located on the northern wall of the fine crater Nasireddin. Diameter: 50 km; altitude: 3500 m. NONIUS 183 This crater, together with its neighbors Furnelius and Kaiser, liesbetween Stoefler and Walter. Diameter: 34 km; altitude: 2370 m. ORONTIUS 184 It is an irregular formation. Inside we can observe many craterlets andpits; some of these radiated from Tycho. Diameter: 84 km; altitude: 3100 m. PLAYFAIR 183 This crater lies on the border of Krusenstern, larger than Playfair. Diameter: 45 km; altitude: 2400 m. PITATUS 186 This is a half-destroyed crater which looks like a bay in the southern'coast' of Mare Nubium. Its ancient walls are crossed by wide gaps, andlava flooded inside in the past. On the dark floor there are anoff-center mountain and other few hills; some bright spots stand out onthe ground. Diameter: 80 km; altitude: 850 m. PURBACH 185 It can be found on the eastern part of Mare Nubium, near Rupes Recta.In its interior there are three ridges and its ramparts are interruptedin the northern part by a crater, called G, 25 km in diameter. Diameter: 120 km; altitude: 2400 m. REGIOMONTANUS 183 Ancient cirque with an elliptical shape (105 x 130 km) and irregularramparts. Altitude: 2000 m. SASSERIDES 182 Diameter: 100 km; altitude: 1770 m. THEBIT 184 This is the largest of three overlapping, progressively smaller craters,known as 'granfather, father and son'. There are some ridges on itsfloor. Diameter: 51 km; altitude: 3200 m. WALTER 185 This is a large walled plain whose floor is strewn by small craterletsand hills. Its ramparts are quite complex. It is one of the mostbeautiful objects on the Moon, under morning illumination. Diameter: 160 km; altitude: 3400 m. WERNER 183 It forms a pair with Aliacensis. Diameter: 73 km; altitude: 4500 m. ABUFELDA 192 62 Large cirque close to Almanon. Diameter: 64 km; altitude: 3200 m. ALMANON 192 It is located south of Abufelda. Diameter: 48 km; altitude: 1800 m. BUCH 193 This crater is located northeast of Maurolycus. Diameter: 48 km; altitude: 1800 m. CATHARINA 199 This crater forms a 'bent group' with the younger Cyrillus andTheophilus. The floor is very ondulating and craterized; we can see alsotwo ghost-craters of rather large size. However, they have been almostcompletely wiped out. The most interesting object on the floor is acurved ridge. This is one of the most beautiful craters on the Moon, andthe progressive variation of solar illumination creates an ever-changingexhibition of light an shadow effects. Diameter: 95 km; altitude: 2700 m. CYRILLUS 196 It is located between Catharina and Theophilus not only in geographicsense, but also from the point of view of their respective ages. Insidewe can observe a little crater, Ciryllus-A (17 km in diameter), and atriple central mountain. The walls are rather complex and the floorlooks hilly and has at least two evident clefts. Diameter: 90 km. FRACASTORIUS 196 These are the remnants of a very ancient crater on the southern shore ofMare Nectaris. Its rampart was practically destroyed by lava floodedinside from the near Mare. The floor is full of interesting details:like a cleft interrupted by one of the numerous craterlets. Diameter: 100 km; altitude: 2400 m. GEBER 192 It shows remarkably regular walls. Diameter: 40 km; altitude: 1930 m. NEANDER 192 Diameter: 50 km; altitude: 3400 m. PICCOLOMINI 194 It is a young crater with a bright central peak. It is located directlynorth of Montes Altai. Diameter: 88 km; altitude: 3500 m. POLYBIUS 193 It is located east of Montes Altai, near Mare Nectaris. Diameter: 35 km; altitude: 2360 m. PONTANUS 193 It is located between Gemma Frisius and Sacrobosco. Diameter: 60 km; altitude: 2120 m. RABBI LEVI 193 This is a walled formation, half-destroyed by more recent impacts. Diameter: 85 km; altitude: 3500 m. RHEITA 193 It is located at the northeastern end of Rheita Valley (actually, it isa chain of craters). Diameter: 67 km; altitude: 4000 m. RICCIUS 193 Ancient crater whose ramparts are riddled by craterlets. Diameter: 80 km; altitude: 1770 m. SACROBOSCO 194 This is a crater located south of Montes Altai, one of the mostcraterized areas on the surface of the Moon. Diameter: 83 km; altitude: 3500 m. STIBORIUS 192 Young crater with a central peak. Diameter: 41 km; altitude: 2250 m. WEINEK 192 Diameter: 29 km; altitude: 2590 m. ZAGUT 193 It has a crater (called Zagut-E, 30 km in diameter) near its center. Diameter: 80 km; altitude: 3200 m. BORDA 202 32 Diameter: 43 km; altitude: 2900 m. COLOMBO 203 It can be observed east of Montes Pyrenaei, looking elliptical becauseof the perspectival distortion. Diameter: 81 km; altitude: 2400 m. COOK 203 It is located near the southeastern border of Mare Foecunditatis. Diameter: 43 km; altitude: 1170 m. PETAVIUS 207 It is a very ancient, magnificent formation, a sort of ring plain. Itsage is probably four thousand million years. It has a complex wall,consisting of several ring-like walls, one within the other. The flooris convex and there is a massive mountain in the center; extending fromthis, there is one of the most prominent rills or clefts of the Moon. Diameter: 160 km; altitude: 3300 m. SANTBECH 202 Diameter: 70 km; altitude: 4500 m. SNELLIUS 206 It is a recent formation, close to the Stevinus, whose floor is a littlebit darker than the one of Snellius. In this area we can find manybright spots, probably originated by the same impact which created themain crater. Diameter: 80 km; altitude: 3500 m. STEVINUS 204 This young crater forms a pair with the near Snellius. Like itscompanion, it has many bright spots around its ramparts. Diameter: 80 km; altitude: 4600 m. VENDELINUS 205 It is an ancient crater with an irregular outline. There are some cleftsand hills on the floor. Two craters are visible on its ramparts: Lame'in the northeast and Lohse in the northwest. Diameter: 150 km; altitude: 4400 m. BAILLY 227 25 It is the largest lunar walled plain. Unfortunately, it is located nearthe lunar edge, therefore the observation is difficult: we must takeproper advantage of favorable librations. There are many details on thefloor, like ridges and craters, such as Hare, near the southern wall,72 km in diameter, with a central peak. Diameter: 290 km; altitude: 4270 m. HAINZEL 225 Hainzel is a complex structure, formed by partial coalescence of tworings. It is very close to Mee, another large walled plain. It isinteresting to observe both of them at local sunrise. Diameter: 100 km; altitude: 3000 m. LONGOMONTANUS 224 This is a very large walled plain, whose dusky floor is crossed by raysfrom Tycho. Its walls are broken by depressions; near the center thereis a group of hills. Diameter: 148 km; altitude: 4500 m. SCHEINER 223 This large plain has terraced walls and seven craters on the floor. Diameter: 112 km; altitude: 4000 m. SCHILLER 223 Elliptical formation (100 x180 km), probably created, like Hainzel, bythe coalescence of two ring structures. Altitude: 3900 m. WILHELM I 223 Irregular ring, whose rough uneven floor is crossed by two rays fromTycho. Diameter: 100 km; altitude: 3500 m. BLANCANUS 235 69 It is located just south of Clavius, the famous large walled plain.Inside, on the floor, there are a central group of three peaks and threecraters between the center and the southern inner slope. Diameter: 98 km; altitude: 4000 m. CLAIRAUT 233 It is a walled plain located south of Maurolycus. Diameter: 75 km; altitude: 2700 m. CLAVIUS 2311 It is one of the largest lunar cirques; it is so large that it can bedistinctly glimpsed even with the naked eye as an irregularity onthe terminator. It has an ancient origin and presents complex ramparts.There are many craters on its floor, expecially in the southern half; onthe southern wall we can find Rutherford (diameter: 40 km; altitude:2870 m), and on the northeastern part of the external ring lies Porter(diameter: 47 km; altitude: 2850 m), with a triple central mountain.Finally, an odd feature: no rills or clefts have ever been detected inthe interior of Clavius. Diameter: 220 km; altitude: 4600 m. CUVIER 234 It forms a pair with its neighbor Jacobi. Cuvier has terraced walls andnumerous craterlets in its interior. Diameter: 66 km; altitude: 3800 m. GRUEMBERGER 233 This is a formation located south of Clavius. Diameter: 64 km; altitude: 4300 m. HERACLITUS 235 It has a curious shape, suggesting a huge car tire mark on the lunarsurface. It is connected in the north to the ring plain Licetus and inthe south to an unnamed crater. There is a ridge in the center. Diameter: 92 km; altitude: 2850 m. MAGINUS 235 This is a splendid walled plain whit broad inner slopes, located in oneof the most craterized areas of the Moon. Large telescopes revealmultitudes of details on the convex floor of Maginus. Diameter: 176 km; altitude: 4000 m. MANZINIUS 233 It has wide terraced walls and a modest central peak. Its coordinatesare 68°S and 25E. Diameter: 100 km; altitude: 3500 m. MAUROLYCUS 234 It is a giant enclosure, a very interesting formation: every kind oflunar objects can be found on its ramparts. It has a central mountain.Diameter: 200 km; altitude: 4200 m. MORETUS 235 It looks elliptical for its closeness to the limb. It has the highestcentral mountain on the Moon: 2700 m in altitude. There are manydetails on its dark floor. Diameter: 120 km; altitude: 5000 m. SAUSSURE 234 This walled depression has a rather dark interior, in which, near thecenter, a double craterlet can be found. Diameter: 50 km; altitude: 2400 m. STOEFLER 236 It is an elliptical crater (108 x 135 km); many signs of recent meteoricimpacts can be seen on its surface. On its floor we can also see somedark spots and white streaks from the crater Tycho, whose aspectcontinously changes, depending on the phase angle of the Moon. Altitude: 3600 m. TYCHO 2311 This famous crater is located at 43°S and 11°W. The ramparts are quitehigh, and the external ring appears made up of many linear segments incircular arrangement; it has a prominent central mountain (altitude:1500 m). Tycho is the center of the most extensive system of rays on thelunar surface, clearly visible, when it is full Moon, even to the nakedeye. The rays are a sort of thin surface deposit: in fact, they cast noshadow. This crater is one of the places where probably there is apossibility to observe TLP's. There are theories according to which theimpact that originated Tycho created also the meteorites known astectites. Diameter: 89 km; altitude: 4000 m. BACO 243 28 It is very difficult to identify because it is located in a verycraterized area. Diameter: 64 km; altitude: 3900 m. BAROCIUS 243 It is very close to the wall of Maurolycus and has a nearly centralcrater on its floor. Diameter: 80 km; altitude: 3500 m. FABRICIUS 244 This is a relatively young crater. It partially lies upon the nearMetius, and both are located near Janssen. Diameter: 77 km; altitude: 4300 m. JANSSEN 245 It is an ancient cirque with hexagonal shape. The floor is very ruggedand an interesting detail must be mentioned: a large branching cleft.Four craters intrude upon Janssen: they are Brenner, Metius, Fabriciusand Fabricius-A. Diameter: 160 km. METIUS 243 This young crater is very close to Fabricius and Janssen. Diameter: 85 km; altitude: 5500 m. NICOLAI 242 Diameter: 43 km; altitude: 1830 m. PITISCUS 244 This young crater can be easily identified on the southern upland on theMoon. In spite of its recent origin, the floor has many craterlets. Diameter: 80 km; altitude: 3000 m. STEINHEIL 242 It has a neighbor called Watt. VLACQ 242 It is located near Rosenberger. Diameter: 92 km; altitude: 3000 m.
