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ViewSat
Satellite Viewing Program
December 8, 1992
Copyright (c) 1992
By David J. Rasmussen
All Rights Reserved
David J. Rasmussen
10374 Palmento Dr.
Riverside, Ca. 92505
_______
____|__ | (tm)
--| | |-------------------
| ____|__ | Association of
| | |_| Shareware
|__| o | Professionals
-----| | |---------------------
|___|___| MEMBER
ALL VERSIONS OF VIEWSAT ARE NOT PUBLIC DOMAIN SOFTWARE, NOR ARE
THEY FREE SOFTWARE.
Non-registered users are granted a limited license to use ViewSat
on a trial basis for the purpose of determining whether ViewSat
is suitable for their needs. The term of the trial basis shall
not exceed 30 days. Use of ViewSat, except for this limited
purpose, requires registration. Use of non-registered copies of
ViewSat by any business, corporation, governmental agency, or
other entity institution is strictly forbidden. The program will
notify you when the evaluation period has elapsed.
This document is a complete description of the program, including
the license that will be granted upon registration. There are no
surprises. If you have questions or suggestions, or if you need
assistance, you may send EMail on Compuserve to 75176,1775 or
write to the address at the end of this document or phone me at
(909) 687-4344.
We encourage you to register your use of ViewSat. Registered
ViewSat users receive a diskette containing the current version
of the registered program, notification of new releases, and
enthusiastic support from the author when needed for a period of
at least 3 months from the date of registration. The registered
version of ViewSat is functionally identical to the shareware
distributed evaluation version, but it lacks registration
reminders and it is branded with the registered user's name.
Beyond the immediate tangible benefits, registration also
provides support for the shareware software distribution concept.
Shareware is not free software, nor is it in the public domain.
Shareware means quality software that you try before you buy,
generally at a far lower cost than a similar retail product, if
one exists. We all benefit, but only if the users do their
ultimate part of registering. If ViewSat is a useful addition to
your system, please register your use.
To register, fill in the form at the end of this document and
send it with $20.00 (US) for a single machine to D. J. Rasmussen
Consulting, 10374 Palmento Drive, Riverside, Ca. 92505-1551, USA.
You may also register through CompuServe (go SWREG) using my
registration ID of 260. Site licensing is also available.
ViewSat makes no warranty of any kind, either express or implied,
including but not limited to implied warranties of merchantability
and fitness for a particular purpose, with respect to this
software and accompanying documentation.
David J. Rasmussen, author of ViewSat, SHALL NOT BE LIABLE FOR
ANY DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS PROFITS,
BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER
INCIDENTAL OR CONSEQUENTIAL DAMAGES) ARISING OUT OF THE USE OF OR
INABILITY TO USE ViewSat, OR FOR ANY CLAIM BY ANY OTHER PARTY.
****************************************************************
Introduction:
ViewSat is a program to aid the user in visually locating
Earth orbiting satellites as they pass overhead. ViewSat is menu
driven and supports mouse operation. It calculates and displays
the positions of the satellite at a user selectable interval. It
uses NASA 2-Line element sets for the necessary data to perform
the calculations.
*** Note: Obtaining Satellite Element Sets.
To achieve maximum satellite prediction accuracy, your element
set should be as current as possible. NASA two-line element sets
can be found on the Rancho Palos Verdes Bulletin Board System
(RPV BBS), (310) 541-7299, operated by Dave Ransom, Jr. These
files are located in file area #4, are of the form NASAxxx.ZIP
and are updated approximately twice weekly in the ZIP compression
format. ViewSat is also compatible with elements provided by Ted
Molczan on the Canadian Space Society bulletin board. These
elements are updated less often, but also appear in compressed
format in file area #4 of the RPV BBS. Their file names are of
the form N2L-XXX.ZIP.
Commands:
The software's commands are listed in their order of
appearance on the display screen, from left to right, with the
appropriate sub-menus as an indented sub-list below each menu
item. Whenever a user entry is required, the keys are shown in
angle brackets and represent the available values or commands to
be entered. For example, Function key 2 is listed as <F2> and the
R key is listed as <R>. The top menu bar commands may be selected
by pressing <Alt> and the first letter of the menu desired. Other
menus and commands in ViewSat may be selected by either using
"Hot Keys", that is, the character that is highlighted in the
command or by using the arrow keys and moving the reverse video
bar to the desired command and pressing <Enter>. The available
"Hot Keys" will be shown in this manual in angle brackets. To
exit out of any command or menu, use the <Esc> key. This will
allow you to "back out", one command at a time, all the way to
the QUIT menu. Mouse support is also built into the program with
the left button used as the <Enter> and the right button user as
the <Esc> key. Moving the mouse with the left button pressed will
"drag" the reverse video bar to the desired menu entry.
Screen Layouts:
The top line contains the program name, version number, date
of that version, copyright information and the time (either local
or UTC). The next line displays the current active satellite name
and element set filename. The fourth line is the "Main Menu Bar".
The bottom line contains helpful information about current
possible options. The following is a sample of the display screen
with the ABOUT screen displayed:
ViewSat v1.08 12/08/92 (c) 1992 David J. Rasmussen 18:08:57 loc
Satellite: Mir Element file: JSCEL103.TXT
╔══════════════════════════════════════════════════════════════════════════════╗
║ About Run Setup Utilities Quit ║
╟──────────────────────────────────────────────────────────────────────────────╢
║ ╔══════════════════════════════════════════════════════════════╗ ║
║ ║ ║ ║
║ ║ ViewSat v1.08 12/08/92 ║ ║
║ ║ ║ ║
║ ║ Unregistered ║ ║
║ ║ ║ ║
║ ║ ║ ║
║ ║ Copyright (c) 1992 David J. Rasmussen ║ ║
║ ║ all right reserved ║ ║
║ ║ ║ ║
║ ║ Please register ViewSat by sending $20.00 (US) to: ║ ║
║ ║ D. J. Rasmussen, Consulting ║ ║
║ ║ 10374 Palmento Drive ║ ║
║ ║ Riverside, Ca. 92505 ║ ║
║ ║ ║ ║
║ ╚═════════════════ Press any key to continue ══════════════════╝ ║
║ ║
║ ║
╚══════════════════════════════════════════════════════════════════════════════╝
LTR-cmd <Esc>-exit <>-hilite <┘-select
Main Menu Bar
The main menu bar presents several menu options. They may
be selected using the <Alt> key and the first letter of the
command.
About <Alt><A>
This menu selection displays information about the program and
the author, along with registration status. When you register the
program the user's registered name will be displayed in place of
the "Unregistered" line.
*** Note: There is a 30 day evaluation period. After that time
whenever this menu selection is brought up a message will be
displayed to remind you to register your use as soon as possible
(this is refered to as a "nag screen" is shareware circles).
Run <Alt><R>
This menu structure pulls down a sub-menu with the possible
simulation modes. They are as follows:
Print data to Screen
Print data to Disk
Run STS Orbit Plus
Setup <Alt><S>
This menu structure is used to configure the operational
parameters pertaining to the satellite; element set; starting
date, time, length and resolution of simulation; viewing
location; and data restrictions.
Utilities <Alt><U>
This menu structure pulls down a sub-menu with various useful
disk and system functions. They are:
File maintenance
OS shell
Set Time
Quit <Alt><Q>
This menu item is used to exit the program. Possible
selections are:
Stay
Quit
The Run sub-menu contains the selections which start the
simulation (this is the main function of the program... to run
simulations).
Print data to Screen <S>
This starts the computer calculating the positions of the
selected satellite from the viewing location for the time period
with the data restrictions applied and each data point which
passes the restrictions is printed to the screen. The following
is a sample run for the Mir space station:
Viewing location: Riverside, CA, Lat: 33.980, Lon: -117.365
Date and time at start of run: 13 Mar 1992 18:02:00 local
Mir
1 16609U 86 17 A 92069.11824684 .00032647 00000-0 43671-3 0 1341
2 16609 51.6006 29.9062 0016242 159.2562 200.9020 15.57566868346660
Element epoch age at start of run: 4/23:11:43 (days/hr:mn:sc)
Date Time Azim Elev RA Dec Alt Range Mag
local deg deg hr:mn deg km km
17 Mar 1992 20:25:00 324.56 8.79 00:21 48.85 394.49 1491.82 3.7
18 Mar 1992 19:29:00 335.65 7.07 22:28 54.93 396.44 1616.16 3.5
19:30:00 346.62 12.17 21:37 65.01 395.30 1291.98 2.7
19:31:00 4.43 17.77 18:29 73.31 394.14 1041.25 1.8
19 Mar 1992 18:33:00 343.37 5.36 20:43 57.49 398.28 1752.88 3.4
18:34:00 355.89 8.72 19:13 64.46 397.19 1501.06 2.7
18:35:00 12.60 11.38 16:37 64.64 396.06 1336.56 2.2
18:36:00 32.28 12.14 14:33 53.41 394.89 1294.08 1.8
18:37:00 51.19 10.50 13:35 37.80 393.70 1385.23 1.8
19 Mar 1992 20:09:00 310.07 8.73 01:03 37.76 394.15 1497.62 4.1
20:10:00 308.53 16.47 01:42 40.83 392.95 1091.43 3.1
The top 10 lines do not scroll and they show information about
the viewing location, starting date and time, the satellite
elements, the age of the element epoch at the start of the run
and column headings for the position data.
*** Note: The age of the element epoch is important because with
many low altitude satellites (or with satellites which make many
orbital maneuvers, such as the space shuttle) the position data
accurracy degrades with time. For the most part elements which
are less than a month old will be accurate to about two minutes
time for the given position.
Each data line contains the following information:
Date (shown on the first line of data for an orbit which passes
the data restrictions).
Time (local or UTC as selected).
Azimuth (compass angle increasing clockwise from north).
Elevation (angle above mean horizon, 90 degrees is straight up).
Right Ascension (hours and minutes measured from the prime celestial
meridian).
Declination (angle above or below the celestial horizon).
Altitude (satellite distance the earth's surface).
Range (linear distance from the viewing location to the satellite).
Magnitude (apparent brightness "guess"-timate, for reference
Jupiter is -2.5 and polaris (the north star) is 2.1).
*** Note: While the data is being printed the user may press the
<Space> key (or the left mouse button) to temporarily stop the
display. Press any key to restart it. Press the <Esc> key to stop
the simulation where it is at.
Print data to Disk <D>
This starts the computer calculating the positions of the
selected satellite from the viewing location for the time period
with the data restrictions applied and each data point which
passes the restrictions is printed to a disk file which then can
be viewed or printed to a printer. The data is the same as above.
The filename used will be @VIEWSAT.xxx (the xxx is replaced by a
3 digit number starting with 000. If a file with this extension
already exists, the number will be incremented. If all possible
files already exist the default @VIEWSAT.000 will be used).
Run STS Orbit Plus <R>
This is a convenient way to access Dave Ransom's excellent
graphic satellite viewing program (it draws a map projection of
the earth and the ground track of a selected satellite). I think
this is the best graphic program available, so I figured I might
as well make it easy to use both his program and mine. It is
available from the Rancho Palos Verdes BBS (310-541-7299) which
he operates. The file is SOP92xx.PAK in file area #4.
*** Note: see list at the end of this document for other BBS
where tracking programs and element sets are available.
The Setup menu structure is used to configure the operational
parameters pertaining to the satellite; element set; starting
date, time, length and resolution of simulation; viewing
location; and data restrictions. The structure is an "entry
screen", where the data is directly entered in the highlighted
field. The highlighted field is selected using the arrow keys,
mouse, <Tab> key, or <Enter> key. The data is then entered and
the <Enter> key is pressed to save the data (the <Alt><R> key
will abort the current data entry). The <Esc> key exits this
screen back to the main menu bar and the current entries are
saved as the new defaults.
Some of the fields have associated lists of possible entries
to be picked from. The message "<F2>-pick from list" will appear
on the help line for these fields. The user may then press the
<F2> function key to bring up the pick list. The arrow keys,
<PgUP>, <PgDn>, <Home> and <End> keys or mouse may then be used
to highlight the desired entry then press the <Enter> key to
make the selection. As an alternative, the first few letters of
the desired entry may be typed and the cursor will move to
highlight the next entry in the list which matches the characters
typed. The current matching characters are displayed across the
top of the pick list window. The following is a sample Setup
entry screen with a pick list brought up and the matching
characters displayed:
╔═══════════════════════════ System Setup ═══════════════════════════╗
║ Element data file JSCEL103.TXT ║
║ Current satellite name Mir NORAD #: 21255 ║
║ Start date of simulation: 03/14/199┌────────────RIV─────────────┐║
║ Length of run:(dd/hh:mm) 10/00│ Richmond, KY ░║
║ Time resolution:(minutes) 1.00│ Richmond, UT ░║
║ │ Richmond, VA ░║
║ Viewing location name Riverside│ Rifle, CO ▓║
║ Viewing locaton latitude: 33.98│ Rio de Janeiro, Brazil ░║
║ Elevation: 249.1 │> Riverside, CA ░║
║ Use local timezone: Y └────────────────────────────┘║
║ Minimum sat. elevation: 5.0 Maximum sun elevation: -6 ║
║ Maximum sat. magnitude: 6.5 Minimum Mean Motion: 4.0 ║
║ Print satellites skipped: N ║
║ ║
╟────────────────────────────────────────────────────────────────────╢
║ enter Location name <F2>-pick from list ║
╚════════════════════════════════════════════════════════════════════╝
The first field is the Element data filename. This may be
directly entered or picked from a directory list. When picking
from a list, the user may change directory (or disk) by
highlighting the appropriate item and pressing enter. The new
directory list will then be displayed. Once the desired filename
is highlighted, press <Enter> to load that file. The file is then
searched for the current satellite name and, if found, the new
elements are loaded and displayed.
The next field is the Satellite name. This again may be
directly entered or picked from a list of all the satellite names
in the current element data file. If the name is typed in, a
search is then made for the first occurrance in the element data
file for a satellite name that matches at least the number of
characters entered (ie. if you enter COSM, the first Cosmos entry
will be selected from the data file). If this is not the desired
file, press <F2> and the list of available satellites will be
displayed (it may take a few seconds to load, sort and display
the list, so please be patient). Once the desired satellite name
is highlighted, press <Enter> to load the elements for it. Once a
satellite has been selected, the elements will be loaded and
displayed. The following is a sample element data display:
╔════════════════════════════════════════════════════════════════╗
║ Satellite Name: Mir ║
║ Satellite NORAD Number: 16609 ║
║ Satellite Visual Magnitude: ≈1.7 (@ 1000 km, 50% illuminated) ║
║ ║
║ Launch Year: 1986 ║
║ Launch Number: 17 ║
║ Launch Piece: A ║
║ ║
║ Elements Epoch: 09 Mar 1992 @ 02:50:17 UTC ║
║ Orbit Number at Epoch: 34666 ║
║ ║
║ Orbital Inclination: 51.6006° ║
║ RA of Ascending Node: 29.9062° ║
║ Eccentricity: 0.0016242 ║
║ Argument of Perigee: 159.2562° ║
║ Mean Anomaly: 200.9020° ║
║ Mean Motion: 15.57566868 rev/day ║
║ BSTAR Drag: 0.000436710 ║
║ ║
╚══════════════════ Press any key to continue ═══════════════════╝
*** Note: The file TRAKSAT.DOC by Paul E. Traufler contains a
very good description of these classical orbital elements and the
calculations used in this program to display the satellite
positions.
The next field is the NORAD # (number). This again may be
directly entered or picked from a list of all the NORAD numbers
in the current element data file. If the number is typed in, a
search is then made for the first occurrance in the element data
file for a satellite with that number. If this is not the desired
file, press <F2> and the list of available satellites will be
displayed (it may take a few seconds to load, sort and display
the list, so please be patient). Once the desired satellite
number is highlighted, press <Enter> to load the elements for it.
Once a satellite has been selected, the elements will be loaded
and displayed.
The next two fields are the starting date and time of the
simulation. The default value is the system time and date when
ViewSat is started. They may then be changed to any other valid
date (01/01/1600 to 12/31/3999) and time (00:00 to 23:59). They
reflect the time zone selected (either local or UTC).
Then comes the length of run field. This is in days, hours and
minutes from the starting date and time. On my 16Mhz 386 sx it
takes about 1 second per day to calculate and display the
positions for a typical satellite. The initial default is 10
days. I set this field to 00/02:00 (2 hours) and the starting
time to about 30 minutes past sundown, then I select all
satellites in the element data file to find any good satellites
in an evening.
The next field is for time resolution (expressed in minutes).
This is the resolution of the data to be displayed. In other
words, if it is set to 1.0 then each line of data will be in 1
minute increments, or if it is set to 0.5 then each line will be
in 30 second intervals. The initial default is 1 minute.
The next field if the viewing location name. This can be a
city name picked from a valid city file (STSPLUS.CTY is included
with this program and comes from Dave Ranson's STSPLUS program)
or anything the user wishes may be entered (for instance if your
city is not in the city file). This is only used when printed out
in the heading of the simulation data. If the user presses the <F2>
key then a window pops up for the filename of the city file to
use (the default is STSPLUS.CTY) enter a valid file name and
press <Enter> and then the pick list will be brought up to make a
selection from. The current (closest matching) city name is
highlighted, then highlight the new city and press enter. The
longitude, latitude and height (elevation) are then set from the
data in the file.
*** Note: Most heights are zero in the city file. Either the city
file may be edited to change this or the user may enter their
city's elevation (in meters) directly in this program.
If the user can not find a match in the city file and they
entered their own viewing location name then the next three
fields should also be set.
Below is an example of the STSPLUS.CTY file. The format of the
tracking station file is;
City Name Long. Lat. Ht.
(deg) (deg) (m)
"Riverside, CA",-117.365,33.98,249
"Riverton, WY",-108.385,43.025,0
"Riyadh, Saudi Arabia",46.7833,24.5167,0
"Roanoke, VA",-79.9455,37.2703,0
"Rochester, MN",-92.4675,44.0225,0
"Rochester, NH",-70.975,43.3033,0
The city name can be up to 25 characters long while the
longitude (negative = west), latitude (negative = south), and
height can be up to 10 characters long. A comma or a space MUST
separate the data and the city name MUST be enclosed in double or
single quote marks. The height measurement is the elevation above
mean sea-level and is in meters.
The STSPLUS.CTY file can hold a maximum of 1450 viewing
locations in it. The user can enter city data into the
STSPLUS.CTY file in any order but it would be wise to include the
data in an alphabetical order by states or country.
The next three fields contain the viewing location longitude,
latitude, and height. These are set automatically when a city if
picked from the city file, or they may be directly entered (or
altered) by the user here. They are then saved as the new default
values.
The next field is the "Time from UTC". This is the number of
hours from UTC to the viewing location local time:
PST = UTC - 8.0 hours, MST = -7.0, CST = -6.0, EST = -5.0
PDT = -7.0
*** Note: Remember to change this when "Daylight Savings Time"
begins and ends. Also note that the time change is not taken into
account if you run a simulation which overlaps the start (or end)
of "Daylight Savings Time".
The next field is Yes/No (boolean) type. It requires either a
<Y> or <N> key, or click the left mouse button while the field is
highlighted to change it to the other state.
The field is "Use local timezone". If Yes then all data will be
displayed as local time, if No then the data will be UTC (Universal
time). Note that all calculations are performed using UTC and the
conversion is done (if necessary) just prior to displaying it.
The next field sets the Minimum Satellite Elevation. This is the
elevation angle (angle above the mean horizon) that the satellite
must be above for position data to be printed. I like to use 5.0
degrees (ten degrees is about the height of your closed fist with
you arm outstretched). Valid range is +/- 90 degrees.
The next field is the Maximum Sun Elevation. This is how far
below the horizon the sun must be for visible pass data to be
printed. This represents how dark the sky will be and therefore
how easy it will be to pick out the satellite from the background
sky. For bright satellites (Mir, HST, and the space shuttle) I
use -6 degrees (civil twilight), but for most others I use 12
degrees (nautical twilight). Valid range is +/- 90 degrees.
The next field is the Maximum Satellite Magnitude. The satellite
magnitude calculation uses the sun position, satellite range, and
phase angle (angle between the sun, satellite and observer). If a
satellite's magnitude drops below (brightens) the entered value
during a pass then the entire passes data will be printed. This
helps eliminate poor viewing passes from the data printed. Novice
satellite viewers should look for satellites with maximum magnitude
of 4.5 (experienced viewers can probably find them up to 8th
magnitude depending on "seeing" conditions).
The next field is the Minimum Mean Motion. A satellite with a
Mean Motion of less than 4.0 will probably have a highly eliptical
orbit and/or an altitude of greater than 2000 km and therefore a
visual magnitude of greater than 6. This then is the quickest means
to filter out satellites from the element data file that would be
least likely to be visible.
The next field is another Yes/No field to select whether the
satellite NORAD Number and Name should be printed to the output
file if it is skipped because of it's Mean Motion being less than
the Minimum Mean Motion value entered above. This can be useful if
you expect a selected satellite to make a visible pass and it does
not show up in the output (it may have been skipped due to Mean
Motion too small).
The Utilities menu structure pulls down a sub-menu with
various useful disk and system functions. They are:
The first utility is file maintenance. This brings up a
directory list with all files in the current directory shown,
followed by any sub-directories and any other available drives.
The user may use the arrow keys, <PgUp>, <PgDn>, <Home>, and
<End> keys or a mouse to move the highlight bar around. The user
may then Copy, Delete, Rename, Print, or View the highlighted
file by pressing the associated "hot key" (the first character in
each function, ie. to Copy press <C> key). For Copy the entire
path and filename must be entered. Delete requires verification
before the file is deleted. To Rename just enter the new filename
and extension. Print sends the file directly to the system PRN
device. File View opens a new window with the file displayed in
ASCII (press <Ctrl><H> to view the file in Hexadecimal mode). The
arrow keys, <PgUp>, <PgDn>, <Home>, <End> and the mouse may be
used to move around in the file. <Esc> to go back to the
directory list.
The next utility is "OS Shell". This temporarily shuts down
ViewSat (and save most of it to EMS memory or disk) to allow the
user to run other DOS programs. Since most of the program memory
is saved to EMS memory (if available) or to disk, there should be
plenty of memory to run any program you are currently able to
run. Type EXIT at the DOS prompt to return to ViewSat.
*** Note: Do not try to load TSR programs from the OS Shell as
they may cause your system to "hang" requiring a "cold boot".
However you should be able to run any TSRs which you had
previously loaded.
The last utility allows the user to set the system time. Enter
the time in 24 hour (military) format and press enter when ready
to set the clock to the entered time.
*** Note: THE SYSTEM HARDWARE CLOCK MAY BE RESET ALSO IF THE USER
HAS DOS VERSION 3.3 AND ABOVE. Use some caution with this option.
The Quit menu item is used to exit the program. Possible
selections are:
Stay (this exits the quit menu, staying in ViewSat).
Quit (this exits ViewSat, returing control to DOS).
My thanks go out to the following people who helped me either
directly or indirectly on this program.
David H. Ransom, Jr., of Rancho Palos Verdes, CA. Dave is the
SYSOP of the RPV BBS. I included the city data file from his
program STS Orbit Plus (STSPLUS). I would highly recommend his
programs to any person interested in astrodynamics. Other program
he wrote are: STSOrbit, JPLClock, and AstroClock.
T.S. Kelso, SYSOP of the Celestial BBS where current satellite
data can be downloaded and where the core for this program was
obtained (SGP4SDP4.PAS the satellite position propogation
models). Several other satellite tracking programs are also
available on his BBS along with a vast amount of satellite
information.
Paul Traufler, author of TrakSat, whose documentation I used
in preperation of this documentation. TrakSat is another very
good satellite tracking program that combines text and graphics
output all in one program.
Please feel free to contact me to discuss ViewSat or other
computer problems. I can reached through the following BBS:
RPV BBS (owned and operated by Dave Ransom, Jr)
Rancho Palos Verdes, Ca.
310-541-7299
24 hours, 9600/2400/1200 baud.
Celestial RCP/M (owned and operated by T. S. Kelso)
Fairborn, Ohio
513-427-0674
24 hours, 9600/2400/1200 baud.
I can also be reached by E-Mail on Compuserve at 75176,1775 or
throught the Astronomy and Space Forums on Compuserve.
I call up these BBS about three times a week to check my mail
and do some file transfers. These BBS are geared towards
astronomical interests. The latest version of ViewSat and Dave
Ransom's STSPLUS can be downloaded from these BBS also.
This program is produced by a member of the Association of
Shareware Professionals (ASP). ASP wants to make sure that the
shareware principle works for you. If you are unable to resolve a
shareware-related problem with an ASP member by contacting the
member directly, ASP may be able to help. The ASP Ombudsman can
help you resolve a dispute or problem with an ASP member, but
does not provide technical support for members' products. Please
write to the ASP Ombudsman at 545 Grover Road, Muskegon, MI 49442
or send a CompuServe message via CompuServe Mail to ASP Ombudsman
70007,3536.
The REGISTERED user of ViewSat will receive notification when a
new version becomes available. To obtain any future versions of
ViewSat will require the user to send $5.00 (US) and I will send
you the new version on a disk size you specify.
(NON-REGISTERED users are required to send $20.00 (US). They then
become REGISTERED users.)
*** Note: PLEASE STATE THE DISK SIZE YOU REQUIRE!
The REGISTERED versions of ViewSat are for PERSONAL USE and are
NOT to be used COMMERCIALLY (ie. selling the output for profit).
Custom Versions of the Software:
If you require any modifications or changes to the software,
please include detailed information describing all changes you
are interested in. Customization fees will be based on the extent
of the modifications required to the software and any time
constraints, or they may just be incorperated in the next general
release of the software (at the author's discretion).
The following files should have been included in the archive
file:
ViewSat.EXE The program.
STSPLSUS.CTY The city file for tracking stations.
ViewSat.DOC ViewSat program documentation.
JSCELxxx.TXT This is the latest orbital element data set for
three bright easily viewed satellites:
Mir Soviet (???) space station,
HST Hubble Space Telescope,
GRO Gamma Ray Observatory.
ORDER.FRM This file contains ViewSat order forms.
ViewSat v1.08
Satellite Viewing Program
ViewSat Order Form (PERSONAL USE ONLY)
----------------------------------------------------------------
MAKE CHECKS PAYABLE TO:
David J. Rasmussen
10374 Palmento Drive
Riverside, Ca. 92505
----------------------------------------------------------------
Qty
____ ViewSat REGISTERED Version @ $20.00 each $_________
* Price includes shipping and handling * Total $_________
Diskette type (check one): [ ] 5-1/4" 360K [ ] 3-1/2" 720K
[ ] 5-1/4" 1.2M [ ] 3-1/2" 1.44M
Numeric Coprocessor Support:
[ ] Currently have (or plan to get) [ ] No Numeric Coprocessor
Payment: (check one):
[ ] Check [ ] Money Order [ ] Other
Checks and Money Orders must be drawn on U.S. banks in U.S. funds.
** PLEASE PRINT **
Name _______________________________________________________
Company _______________________________________________________
Address _______________________________________________________
_______________________________________________________
Phone _____________________ Bus. ___________________________
Comments ______________________________________________________
______________________________________________________