obs ML (4353) 11 Mar 2006: Lacrosse 5

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Sat Mar 11 2006 - 17:01:01 EST

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    Obs SatTrackCam Leiden (Cospar 4353), 11 Mar 2006:
    
    28646 05 016A   4353 G 20060311191401100 17 75 0238487+666620 56 I+015 10
    28646 05 016A   4353 G 20060311191441100 17 75 0604590+836850 56 I+010 10
    28646 05 016A   4353 G 20060311191451800 17 75 0922497+837890 56 I+010 10
    
    -------------------------------------------------------------------------
    Method: Canon Digital Ixus 400 + ASTRORECORD astrometric software.
    Camera at manual mode, "10 second" (= 10.7 second) exposure, wide field 
    f2.8/7.41 mm.
    
    What these numbers mean:
    http://www.satellite.eu.org/position/IODformat.html
    
    Obtained 4 points during the same Lacrosse 5 pass (two trail photographs) but 
    rejected 2nd point of photograph 1 as it was clearly anomalous (delta T +0.35s). 
    Trails are bright and well defined, making me wonder why the 2nd point came out 
    in error. The three points reported here are very consistent both internally and 
    with Mike's latest elset.
    
    The minus ~0.3s delta T error of a week ago has GONE, although I did *not* put 
    in an extra correction. As Lutz, who also used DCF77 radio time signals, had a 
    similar time deviation last week (as Pierre noted) I am starting to think it 
    wasn't the camera at all, but the Frankfurt time signal this time!!!
    
    - Marco  :-)
    
    -----
    Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    Leiden, the Netherlands. 52.15412 N,  4.49081 E (WS84), +0 m ASL
    
    SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
    Station (b)log: http://sattrackcam.blogspot.com
    Atom RSS: http://sattrackcam.blogspot.com/atom.xml
    e-mail: sattrackcam@wanadoo.nl
    -----
    
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