Re: Stars help to track space junk

From: Marco Langbroek (
Date: Wed Jun 01 2011 - 18:49:44 UTC

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    Op 1-6-2011 19:51, Björn Gimle schreef:
    > I saw their wording as implying that that they take several exposures with a
    > fixed camera, so that they have more star trails close to the object
    > position to measure, and more positions for the object (possibly also
    > moving).
    That makes no sense at all. With modern astrometric catalogues now going very 
    deep, there never is a shortage of available reference stars even when the FOV 
    is very small.
    Seeing and pixel resolution of the image (and stability of the mount) is what 
    determines the quality of astrometry with modern astrometric software. Wirh 
    satellite imagery, a good time control, is a more important factor than the 
    astrometry, even with small equipment.
    - Marco
    Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
    Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
    Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
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