Re: BY Classfd Aug 19

From: Bjoern Gimle@GlocalNet (Gimle@GlocalNet)
Date: Wed Aug 19 2009 - 08:17:09 UTC

  • Next message: Bjoern Gimle@GlocalNet: "Re: BY Classfd Aug 19"

    First, I am surprised it could be so much off! Stable orbit, not maneuvering?
    
    Second, a satellite tracking telescope control program or firmware should be able to cope 
    with long advance/delay times.
       But LXsat=SatelliteTracker computes the RA/Dec track for -0/+0 and leaps along the SAME 
    track when time is adjusted, and I suspect that Meade AutoStar does the same (and is 
    inaccurate anyway!).
    
    Third, for a binocular object I usually copy the TLE and adjust the  Mean
    Anomaly (line 2,44-51) in steps of ~30 degreees (less for a HEO)
    and predict them all in one map (SkyMap). (Other programs may need
    the catalog numbers to be different.)
    
    Fourth, for telescopic search, I use the map (or calculation) to find a part of the
    tracks where the displacement in RA (or Dec) with  time matches a slew speed
    in my scope. E.g. where RA changes by -3 min/min I choose slew speed 4x, and
    keep the W slew pressed while searching.
    
    /Björn
    
    ----- Original Message ----- 
    From: "Brad Young"
    
    No 28054 -7/+11 minutes. Can someone describe a planar search or point me to a good 
    resource?
    
    
    
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