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Contains:  NGC 6910, gamma Cyg nebula, IC 1318, The star Sadr (γCyg)
Getting plate-solving status, please wait...
IC 1318 Butterfly Nebula in the Hubble Palette, 


            Douglas J Struble
IC 1318 Butterfly Nebula in the Hubble Palette

IC 1318 Butterfly Nebula in the Hubble Palette

Technical card

Resolution: 3462x4333

Dates:Aug. 5, 2018Aug. 9, 2018Aug. 11, 2018

Astrodon Ha 5nm: 91x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 92x240" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 92x240" (gain: 139.00) -20C bin 1x1

Integration: 18.3 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 16.77 days

Avg. Moon phase: 15.88%

Bortle Dark-Sky Scale: 6.00 job: 2198072

RA center: 306.187 degrees

DEC center: 40.179 degrees

Pixel scale: 2.310 arcsec/pixel

Orientation: 120.929 degrees

Field radius: 1.779 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard


I had a real hard time processing this one. There are lots of things going on and huge color array. I think that is why there are so many variations of the Butterfly Nebula in narrowband.

The Sadr region, or IC 1318, is the diffuse emission nebula surrounding Sadr or Gamma Cygni. Sadr lies in the center of Cygnus's cross. The Sadr region is one of the surrounding nebulous regions; others include the Butterfly Nebula and the Crescent Nebula. It contains many dark nebulae in addition to the emission diffuse nebulae.

Sadr itself has approximately a magnitude of 2.2. The nebulous regions around the region are also fairly bright.



Douglas J Struble
License: None (All rights reserved)

Sky plot

Sky plot


IC 1318 Butterfly Nebula in the Hubble Palette, 


            Douglas J Struble