Re: Magnitude estimates on Heavens-Above

From: Rik Hill (rhill@LPL.Arizona.EDU)
Date: Mon Apr 23 2001 - 11:43:32 PDT

  • Next message: Anthony Ayiomamitis: "Re: Magnitude estimates on Heavens-Above"

    I too have noticed discrepencies and mentioned them on this list. 
    Since I am often doing visual photometry on variable stars on the
    same night I have a pretty good idea what a given magnitude looks
    like. While I would expect variations of 1-2 mag. just due to
    presentation of a satellite, still on several I have noted 4 mags. 
    
    With ISS and STS's the variations can get big and the more junk
    they stick on to the ISS the more that will probably increase. Right
    now I've been trying to get video in one of my telescopes of these
    two and have noted some variations from predicted brightnesses, but 
    still they were the brightest moving target in the sky!
    
    -Rik
    
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