Re: LB obs 2005 Aug 17

From: Leo Barhorst (leobarhorst@zonnet.nl)
Date: Sat Aug 20 2005 - 05:57:12 EDT

  • Next message: Bram Dorreman: "BD PPAS obs 2005 August 18-19"

    Bjorn Gimle pointed out that with my obs of 80- 98 B was something wrong.
    Indeed it was.
    Bjorn wrote:
    > 80-98B was a real shot in the dark !?
    > I don't see the times add up to 160.2
    > If 40 s period, your accuracy looks like +-10s, not +-0.2
    > 35.5 looks better. Looking at the half-period, I get 17.78
    > and your accuracy is +-0.04, disregarding one (secondary?) flash (and the
    > one you didn't post, which I added at 160.2 in 80-98B2).
    >
    I did discard a last timing of 18.15 sec.
    But in substracting it from the total time of 2min 40.36 sec
    I came up with 2min 40.18 sec in stead of 2 min 22.21 sec.
    Have to go back to school?
    
    The correct PPAS entry is:
    80- 98 B 05-08-17 21:39:28   LB  142.2 0.2   4 35.6   Ff, 4(6)->i
     Timings: 35.48 [53.41 17.77] [18.16 17.39] sec.
     Some maxima not seen due to a white glow from an almost full moon.
    
    This is in good agree with Bjorn's analyse.
    
    Greetings and clear, dark skies
    Leo Barhorst, Medemblik NL
    Cospar 4252 52.76350 N 5.09114 E 2 m ASL
    http://www.home.versatel.nl/leobarhorst/index.html
     
    
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