OPLDatabaseFile
*** Internal Help Error ***
Sorry, help page not found.
	$$intro$$
Introduction (1))Solun started life as an Atari ST program,in C. Since then it has been half written in&BBC Basic for the Acorn Archimedes and&has finally been completely redesigned'and renamed for Psion Series 3, in OPL.
%intro2%%[More]
$$intro2$$
Introduction (2)(In this incarnation, Solun has lost many&stars, all its labels and some drawing(accuracy to make it small and reasonably"fast. However it has a host of new%features and it fit's in your pocket!
%about%%[Back]
$$starch$$
Star File Information (1)&The star and object location files are)extracted from the PD Yale star database.'Solun currently contains 2000 stars and&141 Messier objects. Also included are#outlines for all 88 constellations.
%starch2%%[More]
$$starch2$$
Star File Information (2))Over time, star coordinates change due to$precession; the accuracy of the star(charts deteriorate. Within the limits of+Solun this should not matter: plus or minus
a century or so from now.
%about%%[Back]
$$disp$$
Display Windows)The Solun display contains three windows,*all of which are updated by the space bar.
%dispmain%%Main display window&%dispmoon%%Moonphase/Information panel
%dispinfo%%Time display bar
$$dispinfo$$
Time Display Bar%Across the bottom of the screen, this(window shows the time and date for which&the other displays are calculated. The)time zone currently displayed is shown in'brackets. Observer location also shown.
%disp%%[Back]
$$dispmain$$
Main Display Window (1)(This window shows either a star chart, a'map of the world or an orrery view. The&type of display is controlled from the(main options dialog and the symbols used'can be inspected from the `Chart' menu.
%dispmn2%%[More]
$$dispmn2$$
Main Display Window (2)+The orrery display is not to scale, and the+elliptical shape is irrelevant. The display&is read like a clock face, showing the%progress of the planets as they orbit(anti-clockwise. View is from north side.
%disp%%[Back]
$$dispmoon$$ Moon Phase and Information Panel)The small panel can show the phase of the(moon, seen from the northern hemisphere.%The black shading is in shadow. Other&information can also displayed in this
window by other operations.
%disp%%[Back]
	$$quick$$
Getting Started (1)'For a quick demonstration, simply press*the space bar. You should see a map of the'world showing day and night and marking*the points directly over which the sun and)moon lie. On the right is the moon phase.
%quick2%%[More]
$$menu$$
Menu Options'The Solun menu options are divided into
four groups:%%msolun%%Solun - main control options$%mchart%%Chart - planetarium control!%minfo%%Info - object information %mspecial%%Special - other items
$$msolun$$
Solun Menu%%update%%Update - redraw all displays#%options%%Options - display control+%location%%Location - set observer location
%time%%Time - set display time
 Draw moon - display moon phase
%menu%%[Back]
$$update$$
Update Display&Equivalent to pressing the space bar, *this causes all the display windows to be "cleared and redrawn, if necessary.
%msolun%%[Back]
	$$minfo$$
Information Menu'Astronomical information about the sun,$moon and planets, including rise/set&times. The information may not be very#accurate but will serve as a guide.
%menu%%[Back]
$$mchart$$
Chart Menu
%chartnb%%A note about charts
%view%%View - select chart view&%detail%%Details - select chart detail$%insert%%Insert - add any new detail) Key (1&2) - display symbol legend panels
%menu%%[Back]
$$chartnb$$
A Note About Charts'* To display a star chart, select `Sky'
display in the options dialog.%* When a chart first displayed, Solun(precomputes a table. This takes a while.
%mchart%%[Back]
$$insert$$
Insert Option'This operation inserts into the current)chart any detail set by the Detail dialog+but not yet drawn. This allows charts to be*drawn with minimal detail and detail added$later without redrawing whole chart.
%mchart%%[Back]
$$view$$
View Dialog'This is in two parts: the view mode and)mode parameters. Two modes are available:)%vwco%%Celestial coordinates - atlas view(%vwlo%%Time and place - planetarium view
%mchart%%[Back]
$$vwco$$
View: Chart Centre Dialog(Specifies the chart centre and scale for$an atlas view. Values are all angles'expressed as a decimal (not minutes and*seconds): hour angles for right ascension;
degrees for the others.
%view%%[Back]
$$vwlo$$"View: Observer Location Dialog (1)%Specifies planetarium-style view, all&values in decimal degrees (not minutes&and seconds). The observer location is!specified by the Location dialog.
%vwlo2%%[More]
$$detail$$
Chart Details Dialog (1)(Controls the amount of detail plotted on)the chart. First: the number of stars and&messier objects, from the brightest. A,warning will flash if the end of the file is!reached while the chart is drawn.
%det2%%[More]
$$det2$$
Chart Details Dialog (2))Next: constellation lines to pick out the&shapes of all constellations; and grid(lines can be plotted N-S at 2 hour right(ascension intervals, W-E at intervals of
20 degrees declination.
%det3%%[More]
$$det3$$
Chart Details Dialog (3))Lastly: the path of the ecliptic line and#the positions of the planets can be%marked. (The sun and moon markers are)controlled from the main options dialog.)
%mchart%%[Back]
	$$vwlo2$$"View: Observer Location Dialog (2)$The azimuth (direction) and altitude)(height angle) of the centre of the chart*are specified. The horizon value specifies*the height angle of the horizon line above
the horizontal.
%vwlo3%%[More]
	$$vwlo3$$"View: Observer Location Dialog (3))The final item selects the orientation of(the display: `Normal' shows the stars as'viewed in the sky; `Compass' displays a%mirror image - useful for 180
 views.
%view%%[Back]
	$$about$$
General Information
%copyr%%Copyright
%intro%%What is Solun?
%newstuff1%%What's new in v2.5?
%starch%%Star chart files
$$newstuff2$$
What's new in v2.5? (2)0%hotkeys%%- `hot-keys' for quick mode selection;' - optional installation of star chart;' - use of `FlUtils' shared OPL library;+ - cosmetic touches to the display screens;! - improved rise-set calculation.
%about%%[Back]
$$location$$
Observer Location&To set the observer location, type the%first few letters of the city name or)press `Tab' to step through the database.'Use the World application to enter new 
cities and locations.
%msolun%%[Back]
$$mspecial$$
Special Menu&This menu contains program control and
information items:& About - gives information about Solun0%saveset%%Save settings  - save current settings$ Exit - terminates the Solun program
%menu%%[Back]
$$newstuff1$$
What's new in v2.5? (1)'Solun 2.5 has a number of enhancements:+%saveset%%- save and restore main settings;.%time%%- automatic system time-zone detection;' - observer location marked on the map;4%location%%- location selection from World database;
%newstuff2%%[More]
$$saveset$$
Save Settings Option)Selecting this option will cause most of &the current settings to be saved in a &small file on the internal drive. The $observer location, the main display )mode and the time and zone are not saved.
%mspecial%%[Back]
$$time$$
Time Dialog&By default, the time and zone are read)from the system clock. Alternatively, the'zone can be set to UT and/or a specific
time entered directly.
%msolun%%[Back]
$$options$$
Options Dialog (1))`Display' sets the main display window: a!map of the world, with or without&day/night shading; a star chart; or an'orrery view. Star charts are controlled
further under the chart menu.
%opt2%%[More]
$$opt2$$
Options Dialog (2)%The sun and moon marker items control(whether these are shown on world and sky+displays. On map displays, the sun can also(be marked by a cross-hair. Note the moon$marker does not represent the phase.
%opt3%%[More]
$$opt3$$
Options Dialog (3)"The moon phase option controls the&automatic display of the small window.+Turn it off if you want to keep any details
displayed about a star chart.
%msolun%%[Back]
$$root$$
Solun Help (v2.5)(Please choose a subject and press Enter:
%about%%General information
%hotkeys%%Key presses
%disp%%Display windows
%menu%%Guide to menu options
%quick%%Getting a quick started
$$hotkeys$$
`Hot-Key' Presses(Letter keys give short-cuts to the menu *options (the Psion key is not necessary). (Digit keys provide quick access to main (displays: 0-None, 1-Day/Night, 2-World, 
3-Sky, 4-Orrery.
%root%%[Back]
	$$copyr$$#*** Solun v2.5  
1994 D Rushall ***)Solun is Freeware. You use it and make as)many copies as you like, provided you: a)%don't do so as part of any commercial+transaction, b) don't alter any part of the(distribution, c) accept all liability if
anything goes wrong.
$$quick2$$
Getting Started (2)*Now try pressing the `3' key. After a few (minutes, the display should show a view )of the southern horizon (if you have not 'changed the default settings) from the 
home-city.
%root%%[Back]
$$chartnb$$
A Note About Charts&When a chart is first displayed, some (tables are calculated. This takes a few )minutes but need not be done again while 
Solun is running.
%mchart%%[Back]
$$root$$
Solun Help (v2.5)(Please choose a subject and press Enter:
%about%%General information
%quick%%Getting a quick start
%disp%%The display windows
%menu%%Guide to menu options"%hotkeys%%A note about key presses
$$hotkeys$$
Key Presses(In stand-by mode, the `Menu' and `Help' (keys have their usual behaviour, whilst )the following keys have special meanings:*Space - a short cut for the update option.
%hotkey2%%[More]
$$hotkey2$$
Key Presses (2)%Letters (A-Z,a-z): short-cuts to the #menu options (the Psion key is not 
necessary). #Digits (0-4): quick access to main (displays: 0-None, 1-Day/Night, 2-World, 
3-Sky, 4-Orrery.
$$hotkeys$$
Key Presses (1)(In stand-by mode, the `Menu' and `Help' (keys have their usual behaviour, whilst )the following keys have special meanings:*Space - a short cut for the update option.
%hotkey2%%[More]
$$mchart$$
Chart Menu
%chartnb%%A note about charts
%view%%View - select chart view&%detail%%Details - select chart detail$%insert%%Insert - add any new detail)%labels%%Label files - select label files
%menu%%[Back]
$$newstuff2$$
What's new in v2.5? (2)#%labels%%- ability to label charts;0%hotkeys%%- `hot-keys' for quick mode selection;' - optional installation of star chart;' - use of `FlUtils' shared OPL library;) - cosmetics, improvements and bug fixes.
%about%%[Back]
$$labels$$
Choosing label files$Label files can be used to annotate )charts. The dialog allows label files to &be assigned to three slots, and which *slots are to be plotted on the next chart.
%mklabel%%Making label files
%mchart%%[Back]
$$mklabels$$
Making label files (1)+Label files can be created with the `Data' $application. Create a database with &three fields: the right ascension and *declination of the label, and the text to 
be displayed.
%mklabels2%%[More]
$$mklabels2$$
Making Label Files (2)+Label files can be created with the `Data' $application. Create a database with &three fields: the right ascension and *declination of the label, and the text to 
be displayed.
%labels%%[Back]
$$mklabels$$
Making Label Files (1)+Label files can be created with the `Data' $application. Create a database with &three fields: the right ascension and *declination of the label, and the text to 
be displayed.
%mklabels2%%[More]
$$mklabels2$$
Making Label Files (2))Both the right ascension and declination )must be expressed as decimal values, and (within range: Ra 0 to 24; Dec -90 to 90.HThe label files are a bit of a hack and errors may cause Solun to crash.
%labels%%[Back]
$$mklabels2$$
Making Label Files (2))Both the right ascension and declination )must be expressed as decimal values, and (within range: Ra 0 to 24; Dec -90 to 90.&** The label files are a bit of a hack'** and errors may cause Solun to crash!
%labels%%[Back]
$$labels$$
Choosing label files$Label files can be used to annotate )charts. The dialog allows label files to &be assigned to three slots, and which *slots are to be plotted on the next chart.
%mklabels%%Making label files
%mchart%%[Back]