Program to Aid in Reducing Observations - Beta testers needed

From: Ted Molczan (
Date: Wed Jun 11 2003 - 04:43:38 EDT

  • Next message: Greg Roberts: "Obs 09 June 2003"

    I have written an MS Windows program called ObsReduce, which reduces satellite
    position observations by performing computations on the catalogued coordinates
    of reference stars. 
    It takes as input the approximate star coordinates, as read from a star chart,
    and finds their precise coordinates in NASA's Sky2000 Version 4 catalogue, a
    collection of 299,167 stars to about magnitude 10.
    ObsReduce supports all three reporting formats in common use: IOD, UK and RDE
    (Russell Eberst's short form of the UK format.) All applicable R.A. and Dec
    formats and epochs are supported. Visual magnitude and optical period
    reporting are fully supported. 
    ObsReduce supports three observational geometries: satellite in-line with
    reference stars, satellite forming right-angled triangle with reference stars,
    and appulses. 
    Though the database is Epoch 2000, the program can be easily configured to
    process inputs in several popular epochs, and the reporting epoch may be
    different from the input epoch.
    Here is a screenshot:
    For complete details, please see the ReadMe file:
    The program is designed for MS Windows 9X, NT, 2000 and XP. It has undergone
    limited testing on Windows 98, 2000 and XP systems.
    I am looking for a few positional observers to beta-test the program. It is
    about a 9 MB download (most of that is the stars file). If interested, please
    contact me by e-mail.
    Ted Molczan
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