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  1. #1
    Bert Hyman's Avatar
    Bert Hyman Guest

    Default Webcam vs. 2MP digicam for recreational astrophotography?



    I was toying with the idea of bolting my Canon A60 (2MP) on the back
    of my C8 or even my C90.

    But, I see that a lot of the photos posted to a.b.p.astro are made
    with multiple stacked and processed images from inexpensive Webcams.

    Are there any archived discussions or articles directly comparing the
    techniques and achievable results for each method?

    One thing I've noticed is that the cost of the hardware adapters to
    get my A60 onto my C8 is more than the cost of a suitable (640x480
    CCD) Webcam.

    Of course, if it doesn't stop raining soon, the whole discussion is
    going to be academic.

    --
    Bert Hyman | St. Paul, MN | bert@visi.com

  2. #2
    Rod Mollise's Avatar
    Rod Mollise Guest

    Default Webcam vs. 2MP digicam for recreational astrophotography?

    >

    HI:

    What are you wanting to shoot? If the moon or planets, just get a webcam...one
    will do better than anything else for these objects.

    Deep sky? If you're comparing an unmodified webcam to a DSLR, it's the DSLR
    hands down. However, modifying a webcam for SC long exposure capability brings
    webcams back into play. People are getting amazing results with modified
    webcams on the deep sky (see <http://www.angelfire.com/space2/tgtan/> for what
    a modified webcam, a SAC7, can do in the hands of a master).

    The DSLR still has quite an advantage due to the larger chip, however. The same
    comparison applies to other digicams, but as the chips get smaller, the
    advantage increasingly goes to the webcams, which are easy to equip with
    cooling via fans, etc.


    Peace,
    Rod Mollise
    Author of _Choosing and Using a Schmidt Cassegrain Telescope_
    Like SCTs and MCTs?
    Check-out sct-user, the mailing list for CAT fanciers!
    Goto <http://members.aol.com/RMOLLISE/index.html>

  3. #3
    Jon Isaacs's Avatar
    Jon Isaacs Guest

    Default Webcam vs. 2MP digicam for recreational astrophotography?

    >One thing I've noticed is that the cost of the hardware adapters to

    It is not that expensive. With the A60 you will be doing everything Afocally
    so all your really need is a $35 SteadyPix adapter from Orion to hold your
    camera in place. I believe the A60 will do a 16 second exposure at ASA 400 so
    you should get something in the deep sky, especially if you use a focal
    reducer.

    If you want to concentrate on the planets, then I think a webcam is your best
    bet but just to have some fun, the steady pix should be a good start.

    jon

 

 

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