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  1. #1
    Matt666's Avatar
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    Default Eta Carina Wide Angle



    Here is my first attempt using Deep Sky Stacker.

    The subject is Eta Carina, photographed using an unguided Pentax K7 DSLR and a Sigma 20-40mm F2.8 Lens.

    The exposure was 25 seconds at 800 ISO, F2.8.

    I took 20 light frames, 20 dark frames and bias frames.

    Midtones and saturation were adjusted in DSS.

    Matt
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    billxtrm (05-17-2010),dmbryan (05-14-2010),jimt (05-15-2010),pcwizard2600 (05-14-2010),somecdnguy (05-18-2010)

  3. #2
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    First attempt with DSS ! Go Buddy go ! Excellent, also shows the power of stacking multiple images very nicely .

    Thanks for sharing

    Clear Skies

    Pete
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  5. #3
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    Default

    Very good wide field Matt. You caught the image with some nice detail.
    Thanks for the post.
    Declan.
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  7. #4
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    Default Updated with some "better: processing in CS4

    Updated with some "better" processing in CS4. Quite obviously once the successful masters are acquired for stacking, all the tricks are in the processing. Using CS4's auto-adjustment modes doesn't cut it. Manually setting the correct level of "black" or contrast seems to have the biggest impact.
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    Last edited by Matt666; 05-15-2010 at 10:00 PM.

  8. #5
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    Default

    Wow, looking at that shot makes one feel rather insignificant in the whole scheme of things, doesn't it? There sure is a lot out there!! Nice shot.

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    Default

    Matt--

    It's beautiful.

    Ignorant question prompted by your "unguided" spec: Did you have the Pentax on a mount with tracking?

    --Bill
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  10. #7
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    Default

    Quote Originally Posted by seal killer View Post
    Matt--

    Did you have the Pentax on a mount with tracking?

    --Bill
    To clarify, the DSLR was mounted on a fixed tripod only. No EQ mount or tracking was used.

    thanks for the feedback and comments

  11. #8
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    Default

    you are in the limit between exposure and tracking also some noise i see in the picture. But with the stacking you got and excellent result!! thanks for sharing and keep going!!

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  12. #9
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    Default

    That is a very nice picture, but it has some focus or processing problems. Some of the stars are donuts under magnification. Others are just fuzzy. As I said it is a fine picture, but I am picky about focus.

 

 

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