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Thread: Intro to image stacking: Step-by-step

  1. #11
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    Totally awesome Baz.
    I'm a long ways away from ever taking any astro pics, But I certainy do appreciate your dedication & terrific work here on the forum.
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    Well done Baz I was about to ''attempt'' to do a post about stacking , you my good man , saved me a whole lot of grief

    One of the things I really like about the internet and forums , everyone shares and others gain, then they pass it on and the sharing continues.
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  3. #13
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    Great tutorial, thanks for sharing

    Is there a reason you use DSS for your DSLR images and Maxim DL for the rest? I've been using Maxim DL to calibrate, align, stack and stretch the subs taken from my Canon 40D and then process the resulting TIFFs in Photoshop. I haven't experimented much with DSS yet, and I was wondering if you found it better/easier for DSLRs.
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    Quote Originally Posted by klaatu2u View Post
    Psonice - I would download and take at look at DSS before thumping it... What Baz put in his tutorial barely scratches the surface of what this free program can not only do, but do extremely well (and hey it's runs on all my platforms). The feature you talk about - letting it choose which stacking/align method based on the image - surprise! it is in there .
    Yeah, I've not used this particular bit of software, and by the sounds of it it's a good application. Take that as a rant about the s general tate of astronomy software Some of the tools I've tried have been brilliant - really well designed and made, but far too much looks and feels like it was made with the "more buttons is better" school of design. Tons of options and buttons, most of which are almost never used, loads of small windows, design from the windows 3 days, overly technical labels everywhere... sound familiar?

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    Very, Very Cool!!! It will help me alot . . .
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    There's also a flavor of DSS called DSS LIVE which I think came out pretty recently and I've read some folks like, some dont. It will automatically stack images 'on the fly' -but if I understand correctly it wont 'calibrate' the incoming image before stacking (no flatting or dark ok bias) and uses the simpler image combine methods. Now, if you have say a QHY-8 or another CCD or camera that doesnt need it, might be pretty sweet...

    Psonice-

    I agree the whole process seems overly complex and lacking in intuitive or 'smart' decision branching. Simple and common things like gradient removal and vignetting detection are made into true rocket science - as are many other things like where the color info sits (stretching), and blooming/antiblooming, exposure normalizing - just for starters. Some of the reason for this is understandable, there's different requirements for an image that is all nebulosity (close in of say the North American Nebula) vs. a galaxy.

    What has interested me is that there is no software which allows a choice system based on the standard catalog types of objects (star, planetary, diffuse, emission, dark, galaxy) and builds a decision tree based on that. To me it seems a simple evolution, but I'm no longer working in that world... or any other... From my own experience I'd think it relatively straightforward process to make a processing software that was even remotely 'intelligent' in this respect.

    There lots of room for improvements - just waiting for folks to get clever enough and frustrated enough to make them, I think/hope we'll see a lot happen as this part of the hobby gains in popularity.

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  8. #17
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    Yep, count me as 'frustrated enough'

    Interesting to hear of DSS live - I'll have to try that. I'm writing my own software that will do this (live stacking, processing etc.). I wonder why they're not doing flat/dark/bias stuff though - this part of the process is pretty trivial compared to the post-process stages. Perhaps they're doing everything on the CPU?

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    Nice one Baz!! and thanks mate, I'm going to have a go now seeing as i have the exact same camera/lens......no excuses for me now, lol.


    Jeff.

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    Default Re: Intro to image stacking: Step-by-step

    When I click on the link it is taking me to a site that wants to sell me movie dvd's.
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    Default Re: Intro to image stacking: Step-by-step

    Quote Originally Posted by jeff rv View Post
    Nice one Baz!! and thanks mate, I'm going to have a go now seeing as i have the exact same camera/lens......no excuses for me now, lol.


    Jeff.
    Same is happening to me. I can buy DVDs of "Highway to Heaven" and "Land of the Giants" but I can't get to the DSS tutorial.
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