Obs ML (4353), 3-4 Aug 2007: NOSS 3-4r, IGS 1B

From: Marco Langbroek (marco.langbroek@wanadoo.nl)
Date: Sat Aug 04 2007 - 03:32:56 EDT

  • Next message: Marco Langbroek: "Photographs of Noss 3-4r brightness variability"

    Obs SatTrackCam Leiden (Cospar 4353), 3-4 Aug 2007:
    
    classfd:
    27699 03 009B   4353 F 20070803213200800 17 75 1827276+384070 56 S+025 10
    27699 03 009B   4353 F 20070803213211500 17 75 1812204+473120 56 S+020 10 
    
    31702 07 027B   4353 F 20070803224245800 17 75 1825324+019960 56
    31702 07 027B   4353 F 20070803224256500 17 75 1831146+039660 56
    31702 07 027B   4353 F 20070803224330800 17 75 1852322+110490 56
    31702 07 027B   4353 F 20070803224341500 17 75 1900122+134510 56
    31702 07 027B   4353 F 20070803224415800 17 75 1930547+223610 56
    31702 07 027B   4353 F 20070803224426500 17 75 1942374+253470 56
    31702 07 027B   4353 F 20070803224505800 17 75 2036295+365120 56
    31702 07 027B   4353 F 20070803224516500 17 75 2054511+394060 56
    31702 07 027B   4353 F 20070803224610800 17 75 2249302+498230 56
    31702 07 027B   4353 F 20070803224621500 17 75 2314252+507020 56
    
    Iridium 74:
    25345 98 032D   4353 P 20070803225627800 17 75 1800106+124640 56
    25345 98 032D   4353 P 20070803225638500 17 75 1755180+161650 56
    
    -------------------------------------------------------------------------
    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.satobs.org/position/IODformat.html
    -------------------------------------------------------------------------
    
    
    The night started out reasonable but not perfect. Around the time of the Iridium 
    74 flare (mag. -0.5), cirrus came in however and I stopped observing.
    
    I followed 07-027B (NOSS 3-4r) over quite a part of its trajectory, seeing it 
    oscilate in brightness. The series of 5 photographs with ~1 min intervals I took 
    shows the varying brightness well, it appearing bright on some, faint on others, 
    off-and-on.
    
    In the daytime I checked out a site in the polder at 25 minutes biking distance, 
    which could become a future secondary observing site. It has clear view on to 
    the horizon full around, and no street illumination for 1 km around. I still 
    have to check it out though at nighttime.
    
    - Marco  :-)
    
    -----
    Dr Marco Langbroek  -  SatTrackCam Leiden, Cospar 4353
    Leiden, the Netherlands. 52.15412 N,  4.49081 E (WGS84), +0 m ASL
    
    SatTrackCam: http://home.wanadoo.nl/marco.langbroek/satcam.html
    Station (b)log: http://sattrackcam.blogspot.com
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    e-mail: sattrackcam@wanadoo.nl
    -----
    
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