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README.1ST
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1992-01-02
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VERSION 4.04 CHANGES (Changes since version 4.03)
> Right Ascension and Declination can now be selected for the map
display and for printing orbital data. In the map, this mode may be
toggled by pressing [F9]. In the print orbital data dialog, a check
box was added to select Right Ascension and Declination.
> I made some changes in the calculations dealing with period,
apogee, perigee, and associated items for satellites that have a
significant decay rate. Before the program would assume that the orbit
size would remain the same, but now, it will properly calculate the
current period, and then adjust the orbit size for all of the other
calculations. The problem was noticed when old data was used for a
satellite that had a high decay rate. The program would plot the
ground track for more than one orbit (and sometimes several) and
abnormal values were noted in the velocity. Now, the program
calculates the proper values.
> I make one simple text change. I changed the phrase "In Sun" to
"Sunlit" on the map screen, to be more correct.
> I reformatted the map screen a little bit, so now altitude at
perigee, and altitude at apogee, inclination, and period are now
shown.
> You can now turn off the page feeds in the print orbit routine.
The page feed was sent at the end of each page in addition to the page
feed following each satellite.
> A bug was found so that when the time offset between local and UTC
was changed, the program would not use the value unless the time dialog
was entered and exited, or the location data saved and the program
restarted. This problem is fixed.
> A bug in the print orbital data where when form feeds were turned
off between satellites, the satellites following the first one did not
have the satellite name printed. The satellite names now print
correctly.
> An option was desired to be able to sort the satellites by
satellite name rather than satellite catalog/designator/name. This
option was added.
> An option asked for was to be able to only save enabled satellites
to a satellite data file. This options has been added. To support
this and the sorting options, the menus were rearranged.
> The merge operation was moved to the edit active satellite dialog.
This moved all of the data editing options to one place as the merge
option was out of place on the main menu.
> A bug was fixed in the Enable/Edit Satellite routine which would
cause the program to hang if Load Satellite data was selected from this
point. The data would load, but then the program forgot to redraw the
enable/edit dialog again.
> Many other small changes were also made throughout the program to
correct minor bugs and to add some useful enhancements.
Since the last couple of versions were released and contained a
number of bugs, I ran the program through quite a bit of beta testing
before releasing it this time. I hope that few problems are found this
time. If you find something that does not work as you expect, please
let me know and I will do my best to get things changed, fixed, or
documented.
Thanks to my beta testers, Bob Norton and Robert Reeves, for their
suggestions, help, and their attempts to break the program (several
attempts being successful).
Bill Penner, WB7DPF
Phone: (206) 373-4840 before 9pm Pacific time
BBS: (206) 479-2157
GEnie: BPENNER
net: bpenner@halcyon.wa.com