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-
- Dave Eagle
- 24 Copthorne Close
- Oakley
- Bedford
- Beds
- MK43 7SQ
-
- SATURN SATELLITES PROGRAM
- ~~~~~~ ~~~~~~~~~~ ~~~~~~~
-
- Welcome to the Saturn satellites program.
-
- This program is used for predicting the positions of Saturn's
- six main satellites: Titan, Rhea, Dione, Mimas, Tethys & Enceladus.
-
- It has been written by members of Bedford Astronomical Society
- and have decided to distribute this freely in the hope other keen
- astronomers will find it useful.
-
- All I ask is that you contact me to say you are using it, so that
- we can gauge how far it has spread. Profit isn't the game we're in.
- If you belong to an Astro Society, a copy of your newsletter would
- also be nice.
-
-
- The program was originally devised by Dave Garnham, and was
- extensively rewritten using IBM Basica & MS Qbasic by Kevin Earp &
- Dave Eagle. Thanks to Terry Russell for compiling it.
-
- You will need a color VGA monitor, although if you have a mono
- monitor, let me know and it could be modified to your needs.
-
-
- Operating the program.
- ~~~~~~~~~ ~~~ ~~~~~~~~
-
- The only information needed to run the program are the Eastern
- elongation times of the satellites. These can be obtained from
- the handbook of the British Astronomical Association.
-
- The program is menu driven, but some explanation will probably
- help if running the program the first time.
-
- Upon starting the program, a menu will appear. To prime the program
- ready for use, you will need to enter the date and time of the last
- Eastern elongation time for each satellite. To do this you will need
- to select option 1, "Change Eastern elongation times". Using this
- option, calls are made to another file "Moon" which should also
- come supplied with the program. The previous E.E. dates entered are
- then displayed.
-
- Follow the prompts to enter the most recent E.E. time. When finished
- you are taken back to the menu, where you can then proceed to plot the
- positions. The new times of E.E. will be saved. The angle of the
- rings and satellite orbits are also adjusted according to the tilt
- of the planet at the time, although they are only calculated between
- 1991 & 2008. But this should be more than enough.
-
-
- For those who are interested, the program works by calculating the
- Julian days of the E.E. dates and time of observation and calculating
- how far each moon has moved since that time.
-
- If you experience difficulty in running this program drop me a line.
- If you also cannot consult the BAA handbook, I can supply the data for
- the current year if you send me a Stamped, addressed envelope.
-
-
- Write to :
- Dave Eagle
- 24 Copthorne Close
- Oakley
- Bedford
- Beds
- MK43 7SQ
-
-
- Above all have fun, and if you have any ideas on how to improve the
- program, or any other comments then let me know.
-
-
- I also have a collection of other astro programs, so drop me a line.
-
- Good luck & clear skies,
-
- Dave Eagle
-