Gradient Removal

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Gradient Removal

Post by pjwack » Sat Jan 06, 2018 12:05 am

I have been using AstroLive. One nice feature is the gradient removal for removing a lot
of skyglow, moonlight, etc. Just started using Sharpcap and have not come across a comparable feature..although
that could well be due to my inexperience with the program. Thoughts?

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Re: Gradient Removal

Post by admin » Sat Jan 06, 2018 4:50 pm


currently there is no feature to do this in SharpCap. I try to keep the amount of image processing available in SharpCap to a minimum, because there are so many great programs already that do image processing like AstroArt, PixInsight, etc - I can't hope to compete with those programs and also develop SharpCap in interesting ways as an image capturing application.

The one area where there is more image processing is of course Live Stacking, where automatic gradient removal might be an interesting addition. I will keep the idea in mind for a future version.



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Re: Gradient Removal

Post by Bikerdib » Mon Jan 08, 2018 1:17 am

I as well as lots of others (from what I've read on various forums) use Sharpcap for EAA aka NRTV. That could be a useful addition to live stacking.

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Re: Gradient Removal

Post by pjwack » Wed Jan 10, 2018 12:57 am

yes- i was referring to it's use for live stacking, where the use case is more about immediate gratification as opposed
to heavy post-processing:)). You can definitely use a UV filters and/or move the blackpoint, but I've found the astrolive gradient removal
to be a quick way to get 90% of the way there. thanks.

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Re: Gradient Removal

Post by nm1213 » Mon Feb 19, 2018 2:48 am

Also, I live stack with an alt-az mount, and the gradient artifacts increase over time around the edges due to field rotation. I wonder if removing gradients from each exposure before stacking will help minimise the amount of field rotation gradient artifacting that chews into usable image size?

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