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- VERSION 4.04 CHANGES (Changes since version 4.03)
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- > 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.
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- > 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.
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- > I make one simple text change. I changed the phrase "In Sun" to
- "Sunlit" on the map screen, to be more correct.
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- > I reformatted the map screen a little bit, so now altitude at
- perigee, and altitude at apogee, inclination, and period are now
- shown.
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- > 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.
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- > 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.
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- > 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.
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- > An option was desired to be able to sort the satellites by
- satellite name rather than satellite catalog/designator/name. This
- option was added.
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- > 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.
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- > 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.
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- > 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
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- point. The data would load, but then the program forgot to redraw the
- enable/edit dialog again.
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- > Many other small changes were also made throughout the program to
- correct minor bugs and to add some useful enhancements.
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- 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.
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- 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).
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- Bill Penner, WB7DPF
- Phone: (206) 373-4840 before 9pm Pacific time
- BBS: (206) 479-2157
- GEnie: BPENNER
- net: bpenner@halcyon.wa.com
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