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Thread: Thor's Helmet

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    STEVE333's Avatar
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    Default Thor's Helmet



    Last night was the first clear night in 27 days (but who's counting?). After Thor's Helmet cleared the mobile home across the street there was only a little over 2 hours before the moon came up, so, that was the acquisition window. Clouds again tonight and for the foreseeable future, so, this data will have to do for now.

    This is a pretty small target for my telescope, but, it's a target I have wanted to try ever since Sxinias mentioned it to me when I was just beginning this hobby. The noise treatment is a little harsh because I was pushing the processing to try and see both horns on the helmet. Hope to get more date in the future so that the processing can be more reasonable. However, I am very happy that I could get an image even this good for such a dim target, and, with only 2 1/2 hours total exposure and our local light pollution.

    This image was motivated by the very nice DSLR image by jschr338 (James) earlier this month, so, Thanks James.

    DETAILS
    30 X 300 sec Lights @ ISO 800
    19 Darks, Master Bias, Flat, and Dark-Flat frames
    Total Exposure = 2 hr 30 min
    Telescope - Explore Scientific ED102 CF with Stellarvue 0.8X FF/FR (FL = 571 mm, F/5.6)
    Camera/Filter - Canon T3 with Baader Modification/Hutech IDAS LPS D1 filter
    Mount - ZEQ25 GT
    Guiding - Orion MMAG system
    Software - BYEOS, PHD2, DSS, PixInsight, Photoshop (Astronomy Tools plugin)

    Thors Helmet PI 1.jpg

    Thanks for looking.

    Steve
    Steve King: Light Pollution (Bortle 5) - SQM 19.08 mag./arc sec2 @ zenith
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  3. #2
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    Default Re: Thor's Helmet

    Nice looking image!

    What's the red stripe across the top?

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    Default Re: Thor's Helmet

    Quote Originally Posted by Grantypoo View Post
    Nice looking image!

    What's the red stripe across the top?
    Airplane trail. I was just too lazy to go back and restack without the bad image. Good eye.
    Steve King: Light Pollution (Bortle 5) - SQM 19.08 mag./arc sec2 @ zenith
    Telescope + Mount + Guiding: W.O. Star71-ii or ES ED102 CF + iOptron ZEQ25GT + Orion Magnificent Mini AutoGuider
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    Software: PHD2; BYEOS; PixInsight; QPPA2_________My AP website
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    Default Re: Thor's Helmet

    Niiice!
    What stacking method were you using, and what were the clipping points?
    For your frames, Linear fit, low clipping 7, high clipping 2-3 should get rid of the trail, and save the frame...

    I have 2 hours of 600 sec Ha subs on this target from last night as well... I'm in the process of processing it, as well as an additional
    2+ hrs of M78.
    I'm also using an almost identical setup as you... 102mm w/0.8x FR. But, I end up at f/4.8. PixInsight doesn't care if the scales don't match...
    It can rescale perfectly.
    I have a dropbox account if you'd like to swap frames to do an HaRGB combo....

    Shoot me a PM if you want the url.
    Jim
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    Default Re: Thor's Helmet

    Nice catch Steve. I'm anxious to see it again when you can add some more data to it.
    Richard

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    Default Re: Thor's Helmet

    Quote Originally Posted by Rcoggins View Post
    Nice catch Steve. I'm anxious to see it again when you can add some more data to it.
    Thanks Richard, me too! Unfortunately the forecast for the next 6 days is all bad. However, JimminCT offered to share his Ha data, so, we'll see how that turns out. I haven't done a collaboration before, and, am excited about the opportunity.

    Steve
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    Default Re: Thor's Helmet

    Great work, Steve - thanks for posting!
    Lea

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    Default Re: Thor's Helmet

    This is such a cool target, Steve, and you really did it justice too. Great job sir!
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    Default Re: Thor's Helmet

    Great image Steve, the colours look spot on to me. I think you've taken a step up lately in your images, well done.
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    Default Re: Thor's Helmet

    Great shot thanks !
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