Stretching The Orion Nebula with GHS - Adam Block [TAIC Short]

Adam Block's "Stretch Academy" is the place to learn everything you want to know about stretching astronomical images. In this TAIC Short video, Adam tackles the Orion Nebula (M42) using the Generalized Hyperbolic Stretch (GHS) tool in PixInsight. Orion is one of the most popular targets in the night sky, but also one of the more challenging objects to process because of the very high dynamic range.
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[@jesuschrist2284]

Ty for this

[@MarkManner]

Adam, super helpful as usual. Thanks! Mark

[@richardlighthill3228]

Thanks for the video, Adam! It helped me understand GHS much better!

[@janelubenskyi1177]

Would we also be able to save the image at various stages for the specific regions we are interested in ….then take them into a layers program and using a mask and paint brush simply “paint in” the regions of interest…in other words the best of a number of images.

[@GwonkReefkeeping]

Great video!! I can't wait to try to incorporate these techniques in Siril GHS.

[@AstroJWA]

I'm having issues getting GHS installed on my Windows 11 machine. Any tips?

[@TAIC]

You are adding the URL to the repository list in PixInsight?

[@AstroJWA]

​@@TAICyes. I keep getting an error that the URL will not connect to download

[@TAIC]

And you're using ghastro.co.uk/updates/ in the repository list?

[@AstroJWA]

@@TAIC MY comments keep getting removed. I used the same URL you posted and no go. Thanks for your help

[@TAIC]

@@AstroJWA Weird, yeah I think only we can post links (probably an anti-spam policy on RUclips's part). One other thing to try is to force a re-download - in your PI install directory (Program Files), locate the updates.xri file and move it somewhere else temporarily, and then restart PixInsight, which will force it to re-download all updates, and this might help it resolve the URL correctly.