Re: Digital Photography of Satellites

From: Tony Beresford (aberesford@iprimus.com.au)
Date: Wed Feb 21 2001 - 18:39:58 PST

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    At 11:06 22/02/01 , Dave Kerr wrote:
    >Is the newest generation of Digital Cameras, still and video,
    >capable of obtaining film-quality images of satellites?   After
    >observing Lacrosse 4 pass by Jupiter a few days ago, I
    >would like to record images of  satellites, and I've never
    >quite mastered film photography.  Thanks.
    David, low light level (0.01Lux) video cameras equipped with
    photographic lenses rather than the the ones used in the
    security business) show satellites to fainter than mag 6.
    Camcoder types usually stop about mag +3. In regard to
    still photo, the exposures required are longer than
    for domestic use and you have to find a camera with
    exposure control. Personally I havent seen any cheap ones
    
    ALL uncooled CCD chips are saturated by about
    10 seconds with thermal electrons. To go longer
    and fainter one has to cool the chip.
    Tony Beresford
    
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