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Thread: Thor's Helmet with Ha

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    STEVE333's Avatar
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    Default Thor's Helmet with Ha



    Iv'e recently posted two images of Thor's Helmet, one captured with the Triad Tri-Band filter and the other captured with the STC Duo-Narrowband filter (see filter spectral transmission graphs below).


    Triad Tri-Band Filter (18 nm and 3 nm bandwidths)




    STC Duo-Narrowband Filter (10 nm and 10 nm bandwidths)



    The Triad image (4 1/2 hrs) had good Ha data, but, the final image lacked the normal blue colors. The STC image (only 1 1/2 hrs) had good Blue color, but, had weak Red highlights from the Ha. It was suggested that I combine the Ha from the Triad data with the STC image. So, hear is my first attempt at using Ha to enhance an image. I used OldWexi's PixelMath approach to combine the data.


    Ha Enhanced STC Duo-Band Image



    Flickr Link

    Hope you like it.

    PS: I'm hoping that with more Duo-Narrowband data I won't require any additional Ha data.

    Steve
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    Default Re: Thor's Helmet with Ha

    Steve that’s a brilliant image can’t wait to see more from you

    Rhoda

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    Default Re: Thor's Helmet with Ha

    That image of the Helmet came out very nicely. Nice sharp colors, if you ask me.

    Joe
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    Default Re: Thor's Helmet with Ha

    Great job with combining the data, Steve. Looks fab buddy.

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    Default Re: Thor's Helmet with Ha

    Awesome! Great job, Steve!!
    Marius
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    Default Re: Thor's Helmet with Ha

    GREAT Thor's Helmet Steve!! I wish I could image this.....but clouds, clouds, clouds, and COLD!!!
    Excellent!!
    Tom

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    Default Re: Thor's Helmet with Ha

    Great job Steve!
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    Default Re: Thor's Helmet with Ha

    Very nice! I have the STC Duo filter and haven't had as good results as you are getting here - everything comes out with shades of red. This is not an easy object, great work!

    Cheers,
    Rowland

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    Default Re: Thor's Helmet with Ha

    Quote Originally Posted by Vassar1976 View Post
    Very nice! I have the STC Duo filter and haven't had as good results as you are getting here - everything comes out with shades of red. This is not an easy object, great work!

    Cheers,
    Rowland
    Thanks Rowland - This is just my first image with this filter, so, I'm definitely still in the "learning mode". I like how this filter does provide great LP rejection while still capturing the Ha and Oiii. Kind of like doing NB imaging but with a DSLR and only one filter.

    Because this filter basically provides Ha and Oiii data, I would expect our images should look like HOO images that others are producing. The Red channel is Ha data, and, adding the Green and Blue channels will provide the Oiii data. So far I've actually been processing the data like normal DSLR data (I use PixInsight) using normal color calibration techniques. Still much to learn.

    I just found the tutorial below which shows various was to combine bicolor data. looks like it will be very helpful. Maybe it will help you too.

    https://www.lightvortexastronomy.com...binations.html

    Good luck.

    Steve
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    Default Re: Thor's Helmet with Ha

    Yeah, nice work with the data - super image.
    Jim Thommes

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