Orion wide field, r...
 
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Orion wide field, remote data  

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(@turfpit)
White Dwarf Customer
Joined: 2 years ago
Posts: 24
October 18, 2020 22:31  
Orion 60x120s Pier4
Orion 60x120s cropped

Remote data capture at www.roboscopes.com (Spain) using Pier 4.

Sigma Art 105mm F/1.4 stopped down to F/2
ZWO ASI2600-MC
unguided
mount Astro Physics AP900 GTo3

60x120s plus 10 darks, 100 flats, no bias frames

Calibration/integration/processing with Astro Pixel processor v1.082. SCNR (green noise removal) in Siril to finish.

The second image is a crop, before processing, of the objects from M78 down to M42.

 The third image shows the initial stack with severe light gradient.

initial stack

 

High res images at my Astrobin account https://www.astrobin.com/mf2ebw/0/

Dave

This topic was modified 7 months ago by turfpit

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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3291
October 20, 2020 11:13  

Also a beauty, keep them coming! 🙂


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(@turfpit)
White Dwarf Customer
Joined: 2 years ago
Posts: 24
October 20, 2020 12:58  

Thanks Vincent.  Removing the light gradient is the tricky part and I think I still have some way to go with that aspect of processing.  

I have some more data ordered (60s, 30s, 20s, 10s) for that region and will be experimenting with HDR.

Dave

 

D


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3291
October 20, 2020 13:06  

Yes, the gradients look pretty normal to me and should be solved with flats. HDR is unfortunately not yet a tool in APP (planning it though).


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(@turfpit)
White Dwarf Customer
Joined: 2 years ago
Posts: 24
October 20, 2020 14:33  

I keep going over part 3 of the excellent complete-lrgb-tutorial-of-ngc292-the-small-magellanic-cloud-by-christian-sasse.

For HDR I have stacked frames of different exposure lengths which seems to help.  NGC7000 ,30x120s + 45x60s

Is green noise removal coming anytime in the future? 

 


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(@vincent-mod)
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Joined: 4 years ago
Posts: 3291
October 21, 2020 12:05  

Not specifically that I know off, we might make that easier though. Usually I remove that when doing star color calibration. Or further with HSL, but that is very mild usually, when the new version is out I'll ask Mabula if this is something we can implement in a button. 🙂


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