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Thread: Ngc 6946

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  1. #1
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    Default Ngc 6946

    A couple of clear nights this week allowed me to do the luminance for 2 targets: NGC 6946 and M 33. Tonight I'm gathering some color data for both. I've dome some processing on NGC 6946.

    L = 41 x 10 min, or almost 7 hrs.

    I've left this image totally uncropped just to show how good the alignment was over 2 nights of imaging and 2 flips, which includes using a rotator.

    I experimented by adding some star spikes in Photoshop Elements via Astronomy Tools v1.6. The issue is on an ST8E (and maybe others) bright stars cause a reflection between the chip surface and the chip cover - causing them to look pretty ugly. I think the star spikes help cover the problem up.

    Hopefully, I'll be able to add the color data soon.

    Jim
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  2. #2
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    Default

    Added color:

    R,G,B = 16 x 10 min

    Jim
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    Last edited by Jim McMillan; Sep 28, 2009 at 18:25.

  3. #3

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    Hi Jim,

    Nice ! What type of optical system were you using ? The Luminance looks very deep.


    Regards

    Bill

  4. #4
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    Hi Bill,

    Thanks! I'm using a 10" LX200 OTA on an AP1200 mount. The OTA is about 10 years old by now. With my setup and skies, the key for me is gathering lots of data.

    Jim

  5. #5
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    Jim,

    This is another beautiful image! It's amazing what a few clear nights (a year!) will do, isn't it. You've done a good job adjusting the brighter stars and dealing with the different image sizes of them through each of the color filters. I can't do this.

    I like it.
    Dick
    www.VirgilObservatory.us
    Pier-mounted Meade 12-inch SCT "classic"
    Optec TCF-S focuser
    SBIG CFW-8A and ST7-XMEv
    H-alpha, BVRI, RGB & Clear filters
    FOV ~15’ x 10’



 

 

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