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2 classics: the Lagoon and Trifid

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#1 LPA

LPA

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Posted 27 June 2022 - 10:34 AM

These images of the Lagoon and Trifid nebulas were obtained with my SVX140T + ASI6200MM. Since the Lagoon in RGB is essentially monochrome red, I instead just processed Ha data: 21x360sec subs. The Trifid image is RGB. Originally I tried removing stars in this image using starnet in PI, but that left some artifacts I couldn't remove, so instead I tried starnet++ v2. This did a better job around the brightest stars. My workflow for this image: create non-linear RGB image, remove stars with starnet2, apply curves and local histogram equalization, restore stars.

 

Details for the Trifid:
Scope: SVX140T (938mm f/6.7)
Camera: ASI6200MM
Mount: Paramount MyT
Rotator/Focuser: NiteCrawler
Imaging control: TheSkyX on a miniPC running Ubuntu Linux
Processing: PI, PS, Starnet++v2
Subs: 30x120s Blu, 30x120s Grn, 30x120s Red

 

Images have been cropped for composition and down-sized for CN.

 

Larry

 

LagoonNebula_Ha_CV_LHE_cropcsmall_cn.jpg

 

M20_RGB_PCC_HT_starless2_cv_LHE_stars2_c

 


  • petert913, bobzeq25, david.shadrach and 2 others like this

#2 RogeZ

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Posted 27 June 2022 - 10:40 AM

Hi Larry:

How would you rate the color correction and overall correction with the 6200?

#3 LPA

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Posted 27 June 2022 - 11:39 AM

This is the mono version of the 6200, ASI6200MM. I used Chroma RGB and Ha filters.

 

Larry



#4 RogeZ

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Posted 27 June 2022 - 06:53 PM

This is the mono version of the 6200, ASI6200MM. I used Chroma RGB and Ha filters.

 

Larry

I understand Larry, I guess what I'm asking is how satisfied are you with the scope/camera combo? Is the correction good to the corners? I can't tell hence the question...



#5 LPA

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Posted 27 June 2022 - 07:48 PM

Sorry, I misunderstood. I'm very pleased with this scope/camera combo. The 6200's small pixel size (0.8"/pixel with this scope) requires very well-figured optics to get the most out of this camera, and the SVX140T delivers. I think they are an excellent match.

 

Larry




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