One of the biggest hassles that I encounter with satellite watching is maintaining a list of TLE's for visible satellites that I have not observed. First I would have to use Element Manager to extract TLE's for satellites that are brighter than a certain minimum magnitude. Then I would take the resulting file and use SatSpy's 'Filter Element Sets' utility to extract TLE's for satellites that I had not seen. The output file from SatSpy should contain ONLY TLE's for satellites brighter than a minimum magnitude that I had not seen...however, I found that the SatSpy utility was flawed and the output file contained many satellites that were already observed. The solution was to write my own program. "Extract" is the result of this endeavor. It will read the mccants.tle file and compare it to a list of NORAD numbers of satellites already observed and write out a file containing only TLE's for satellites that I have not seen. Now I can maintain my 'visual.tle' file quickly, using only one program. No more hoops to jump thru or frustration with inaccurate results. Other list users are welcome to use this program.... Windows users: http://home.hawaii.rr.com/dayle/extract.exe Macintosh users: http://home.hawaii.rr.com/dayle/extract.sit A quick/basic help file: http://home.hawaii.rr.com/dayle/readme.txt A sample 'seen' file: http://home.hawaii.rr.com/dayle/seen.txt Aloha Dale ----------------------------------------------------------------------- Change is inevitable- except from a vending machine. -Robert C. Gallagher ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www.satellite.eu.org/seesat/seesatindex.html
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