My first large-aperture Hα image – processing ideas

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GreatAttractor
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My first large-aperture Hα image – processing ideas

Post by GreatAttractor »

On Sunday I finally caught seeing good enough to use my RC8 Lunt 50 mod. For anyone having any processing ideas, feel free to play with the sample stack and post your results (you can find Valery's in the mod's thread):

[The extension tif has been deactivated and can no longer be displayed.]

I settled on using ImPPG's unsharp mask + tone correction only, no L–R deconvolution:
rc8_3m.png
rc8_3m.png (494.44 KiB) Viewed 590 times


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
My images

SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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Montana
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Re: My first large-aperture Hα image – processing ideas

Post by Montana »

200mm_ha_01_.jpg
200mm_ha_01_.jpg (318.72 KiB) Viewed 572 times
I've not done as good a job as you :(

I just used LR deconvolution in ImPPG. You have the same problem as me, the stack shows only areas of detail and the rest in blank. I get this all the time and I presume this is bad seeing. All my images with the C11 have only one small area of detail and not consistent. I am convinced I can't do the stacking properly not the processing.

Alexandra


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Re: My first large-aperture Hα image – processing ideas

Post by DJD »

I love processing other peoples images. I learn such a lot.
I have been playing with NAFE lately, so used it alonside my usual techniques ( mostly ImagesPlus and Photoshop ).
There is still a little bit of the noise added by NAFE, but did not push things too far ( I hope ).
anyway my quick effort.
Thanks,
David
Image200mm_ha_01_stack_DJD by David Dench, on Flickr


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Re: My first large-aperture Hα image – processing ideas

Post by GreatAttractor »

Thanks!
Montana wrote: Thu May 13, 2021 3:05 pm You have the same problem as me, the stack shows only areas of detail and the rest in blank. I get this all the time and I presume this is bad seeing.
Yes, I'm afraid it's the case here. I tried stacking different numbers of frames, in AviStack 2 and AS!3, but it didn't make much difference.

Well, we need to keep waiting for those elusive "ruffled-rug-sharp-everywhere" conditions.


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
My images

SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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