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(@michel82)
Red Giant Customer
Joined: 4 years ago
Posts: 82
September 19, 2020 19:59  

Good evening!

My first try at a mosaic of IC1318. 4 panels, about 6hrs each (4 HA, 2 OSC RGB). I'm not sure about the colors yet, but I couldn't get more out of it without losing too much HA data. I'll attach the HA version as well, where some details have been lost with combining HA and RGB. All in all I'm happy with the result especially with my new scope (evostar 72ED), which is just a doublet. 

Equipment: Evostar 72ED, HEQ5, ASI294MC, asiair.

Feedback is welcome.

IC1318 Complete NO Banner
IC1318 Complete HA St
This topic was modified 4 months ago by Michel Sw

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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 2881
September 20, 2020 11:41  

That's beautiful! Yes your Ha signal is very strong and probably way stronger than the RGB. Maybe you can boost the signal a little in the R, G and B separate channels first before combining? Adding luminance might help for the detail as well I think, you can try to make a "fake" luminance by integrating R, G, B, Ha all in one integration (integrate all in the integrate tab).


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(@michel82)
Red Giant Customer
Joined: 4 years ago
Posts: 82
September 20, 2020 11:56  

@vincent-mod I did try to boost the signals in the RGB combine tool, but maybe not enough. I’ll try it again. And for the Luminance I tried to use the HA as Luminance in the RGB tool. But haven’t tried integrate all and then use it as a Luminance file! Thanks I’ll try that too! I’ll post the result here later!


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 2881
September 20, 2020 12:00  

Combining always will be less nice than just the Ha, as the Ha has all that signal it would require RGB to be as good to have no "degradation". Getting a nice RGB requires you to tone down the Ha signal which causes that. One solution would be to get way more RGB data, longer exposures on them etc.


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(@michel82)
Red Giant Customer
Joined: 4 years ago
Posts: 82
September 20, 2020 12:55  

@vincent-mod ah ok. That would require 4x the amount of signal per channel for a OSC camera I guess.... maybe I need to start saving for a mono camera. Or have 2 weeks of clear weather. Maybe I’ll add more RGB data this year if the object stays visual. 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 2881
September 20, 2020 13:07  

Good luck! 🙂 Still, very nice result already.


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