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Thread: Large format Astrophotography

  1. #61
    Nodda Duma's Avatar
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    Nov 2014
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    Brookline, NH
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    951

    Re: Large format Astrophotography

    Quote Originally Posted by James Cormier View Post
    Jason Lane has done some interesting work. I'd be interested in see his setup aimed towards the star clouds of Sagittarius.
    Lol didn’t even see the posts above mine when I posted.

    All you’d see are trees. My view to the south is well blocked here in NH.

    If you want to see my old work when I lived in Inyokern, CA, visit my old website http://www1.iwvisp.com/opticman/astr...troimages.html
    Newly made large format dry plates available! Look:
    https://www.pictoriographica.com

  2. #62
    Steven Ruttenberg's Avatar
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    Re: Large format Astrophotography

    Quote Originally Posted by James Cormier View Post
    There are exceptions of course. Not for the casual astrophotographer.....

    Attachment 206920

    Takahashi BRC250 with 4x5 astrocamera.
    There is a not so cheap set up! But much like what I will end up with after I make all my mods.

  3. #63
    Steven Ruttenberg's Avatar
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    Re: Large format Astrophotography

    Quote Originally Posted by Nodda Duma View Post
    I mounted a Burke & James 24 f/6 aerial reconnaissance lens in a tube so I could mount it to my telescope. I hacked a 4x5 back onto the Back of the tube. Then I shot a pic of Andromeda Galaxy on Acros 4x5.

    Attachment 207033

    Attachment 207032
    Cool!

  4. #64
    Steven Ruttenberg's Avatar
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    Re: Large format Astrophotography

    As I think about this problem I think setting the focus of the image at the front element of a lens say a 150mm lens and then adjusting final focus like you would with any landscape scene might do the trick.

    Couple of things I wonder about

    1. reversing the lens
    2. effect on magnification of image onto the 4x5 film. Obviously the increase in size is about 2.5 times assuming a 2in starting image circle.

    Once I get the interface down, it will be deciding which lens and then how each of my scopes affect the focus. I have a 16in RC Truss, 12in RC Truss 10in SCT, and a 102mm refractor

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