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Thread: Horsehead with better stars

  1. #11
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    Default Re: Horsehead with better stars



    Quote Originally Posted by Juno16 View Post
    Just when you thought you were finished, another challenge!

    If you don’t mind me asking, about how much time does it take to process an image like these?

    It takes me way too long to achieve a fairly decent process. Maybe my data quality is far lower (definitely) making it more of a time consumer. Not to mention experience too.

    I like all of you versions Steve!

    Thanks,
    Jim
    Hi Jim - thanks for the kind comments.

    First the Preprocessing (calibrating the individual images with Darks/Flats/Bias, then aligning and stacking) takes about 20 min.

    The much longer period of time is spent on the actual processing of the stacked image. This can be as short as 30 min for a simple star cluster. For a nebula like the Horsehead region it took me about 1.5-3 hours for the first version. The final reprocess to improve the stars took me 3-4 hours because I was experimenting with Process settings as well as different "star_mask editing/enhancing techniques" to improve the star protection.

    PixInsight allows me to save a set of process icons (with all the individual settings) so that I can follow the same workflow each time. Of course I almost always end up "tweaking" the settings to best match the image, but, having the icons saves me an enormous amount of time.

    Hope this answers your questions.

    Steve
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  3. #12
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    Default Re: Horsehead with better stars

    Awesome!! Great work, Steve!
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  5. #13
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    Default Re: Horsehead with better stars

    Steve,

    Less smooth (which I didn’t notice) or not, a wonderful job of star control. You are definitely patient

    My only critique would be that the whole image is very heavy in red. Be that as it may, I will fore sure be picking your brain as there is no such thing as too many methods for star control. I really like the balance you achieved, pulling the nebulae out front, while keeping the stars bright and well-defined!

    Mike
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    Default Re: Horsehead with better stars

    Looks like you have met Richards challenge. No mean feat I’d say, the stars look very well controlled and you seem to be controlling PI very well too! That darn program was written by aliens lol. Well done indeed

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    Default Re: Horsehead with better stars

    Quote Originally Posted by Gmetric View Post
    Looks like you have met Richards challenge. No mean feat I’d say, the stars look very well controlled and you seem to be controlling PI very well too! That darn program was written by aliens lol. Well done indeed
    Thanks "G" - Pixinsight is definitely a challenge to learn. However, I'm glad I never gave up.

    It was a lot of trial and error to come up with the techniques for better protecting the stars during the "sharpening" processes so that the dreaded dark-halos were minimized. However, the necessary tools to do the job were available, so, the alien software does have some good points.

    I've included another processing of the image below. The one I posted at the beginning of this post wasn't very sharp and several people commented on that. So, I used the new "star protection" techniques while performing more sharpening. The stars still look pretty good to my eyes.



    Flicker Link

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    Default Re: Horsehead with better stars

    I agree with the comments given but it is all about balance and what pleases you. I think all your versions have their merits and each one can stand on its own and is worthy of hanging on the wall. Enough said.
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    Default Re: Horsehead with better stars

    Awesome, Steve! Love it. Thanks for sharing. Clear skies.
    Susan
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    Default Re: Horsehead with better stars

    That's a beautiful image Steve.
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    Default Re: Horsehead with better stars

    Quote Originally Posted by Hondo View Post
    I agree with the comments given but it is all about balance and what pleases you. I think all your versions have their merits and each one can stand on its own and is worthy of hanging on the wall. Enough said.
    Thank you Scott. Your kind comment is much appreciated.

    Steve
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    Default Re: Horsehead with better stars

    Quote Originally Posted by Hondo View Post
    I agree with the comments given but it is all about balance and what pleases you. I think all your versions have their merits and each one can stand on its own and is worthy of hanging on the wall. Enough said.
    Well said and I couldn’t agree more!!!

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