Correction 25 Nov 2003

From: Greg Roberts (
Date: Fri Nov 28 2003 - 03:20:47 EST

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    Observations 25 Nov 2003:
    Cosatrak 1 (Computerised satellite Tracking System), 1004x low
    light level CCD surveillance camera (0.003 lux) with 145mm focal
    length f/2.5 lens with focal length reducer, field of view
    1.89 x 1.43 degrees.
    Conditions very good - however stopped by cloud
    Site 0433 : Longitude 18.51294 deg East, Latitude  33.94058 deg S,
    Elevation 10 metres - situated in Pinelands (Cape Town), South Africa
    Our ever alert orbit analyst Mike caught an error:
    The following is INCORRECT:
    20344 89 061D   0433 G 20031125181304200 17 15 0222587-550448 39 I+084 05
    and should read:
    20344 89 061D   0433 G 20031125181304200 17 15 0223229-534947 39 I+084 05
    an ENORMOUS difference. At first I could not understand how I could get
    such a large error in declination then accidentally moved the mouse cursor
    in GUIDE and the dec jumped from -53d49'47" to -55deg 04'48"-- I have since
    verified that if the mouse cursor is very close to the border of the
    field displayed it does this jump so it looks like this could be a minor
    bug in GUIDE ? The position given by the cursor under this condition is
    actually the coordinates of the centre of the field of view!
    Moral of the story ? - dont use the mouse cursor to get positions
    at the extreme edges of the field. I suspect that I probably bumped the
    mouse slightly whilst writing down the position ( as I was inside the field
    of view but very close to the edge ) and it jumped to the wrong
    Sorry about that - cant blame the cat!
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