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Sh2-101, 





    
        

            Marc Ricard
Sh2-101

Sh2-101

Technical card

Resolution: 3280x2442

Dates:May 27, 2019June 6, 2019June 23, 2019July 4, 2019July 24, 2019July 25, 2019

Frames:
Astrodon Blue Tru-Balance E-series gen 2: 50x60" -20C bin 2x2
Astrodon Green Tru-Balance E-series gen 2: 51x60" -20C bin 2x2
Astrodon Red Tru-Balance E-series gen 2: 50x60" -20C bin 2x2
Astrodon Ha 31mm 3nm: 45x1200" -20C bin 2x2
Astrodon OIII 31mm 3nm: 64x1200" -20C bin 2x2
Astrodon SII 31mm 3nm: 59x1200" -20C bin 2x2

Integration: 58.5 hours

Darks: ~30

Flats: ~30

Bias: ~99

Avg. Moon age: 15.46 days

Avg. Moon phase: 37.84%

Astrometry.net job: 2952841

RA center: 19h 59' 41"

DEC center: +35° 23' 13"

Pixel scale: 0.715 arcsec/pixel

Orientation: 91.687 degrees

Field radius: 0.406

Locations: Home, Pointe-Claire, Quebec, Canada

Data source: Backyard

Description

I turned my RC-8 to this nebula back in May thinking this would be a nice object for narrowband imaging. Unfortunately I didn't realize just how many subs an f8 scope would require to produce SII and OII masters with an acceptable SNR. I then tried combining the linear images in Pixinsight but the Ha simply overwhelmed everything else and reducing the green cast dimmed the image too much. So I borrowed J-P Metsavainio technique and stretched and removed the stars from each channel before combining them. Somewhat labour intensive but I was much happier with the results. After many tries I added some stars I shot in RGB. Your feedback and suggestions are most welcome.

Comments

Author

suburbanastronomer
Marc Ricard
License: None (All rights reserved)
962
Like

Revisions

  • Sh2-101, 





    
        

            Marc Ricard
    Original
  • Sh2-101, 





    
        

            Marc Ricard
    B
  • Final
    Sh2-101, 





    
        

            Marc Ricard
    C

B

Constrast boost

C

boosted the contrast

Sky plot

Sky plot

Histogram

Sh2-101, 





    
        

            Marc Ricard

In these public groups

Sharpless2 Objects