Re: Fobos-Grunt: photo showing rapid variation in brightness

From: Satcom (john@satcom.freeserve.co.uk)
Date: Tue Dec 06 2011 - 09:45:39 UTC

  • Next message: Jerry Church: "(no subject)"

    These are two second exposures grouped together Björn....so stitching the 
    frames has created gaps in the trail by the looks of it.
    
    John
    
    
    ----- Original Message ----- 
    From: "Björn Gimle" <bjorn.gimle@gmail.com>
    To: "Ted Molczan" <ssl3molcz@rogers.com>
    Cc: <seesat-l@satobs.org>
    Sent: Tuesday, December 06, 2011 8:41 AM
    Subject: Re: Fobos-Grunt: photo showing rapid variation in brightness
    
    
    I don't believe this. The cut-offs/reappearances are much too sudden
    and regular.
    Some multi-exposure feature or a rotating shutter in front of the camera ?
    There is another object below, crossing at ~110 degrees, showing the
    same pattern !
    
    /Björn
    
    2011/12/6 Ted Molczan <ssl3molcz@rogers.com>
    >
    > Via the F-G forum on Novosti Kosmonavtiki, I learned of this photo taken 
    > by Richard Fleet, from the U.K. on 2011 Dec 05,
    > near 17:07 UTC:
    >
    > http://twitpic.com/7owidp
    >
    > I estimate the site to have been near 51.45 N, 2.25 W. The ~20 s exposure 
    > began about 17:07:02 UTC, and reveals eight
    > brief minima, indicating rapid rotation.
    >
    > Ted Molczan
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