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Contains:  gamma Cyg nebula, IC 1318, The star Sadr (γCyg)
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IC 1318 - Gamma Cygni Nebulosity (4 panel mosaic), 


            Randal Healey
IC 1318 - Gamma Cygni Nebulosity (4 panel mosaic)

IC 1318 - Gamma Cygni Nebulosity (4 panel mosaic)

Technical card

Resolution: 5826x4440

Dates:Aug. 21, 2019Aug. 22, 2019Aug. 23, 2019Aug. 24, 2019

Astrodon LRGB Gen2 E-Series Tru-Balance Filters: 30x180" -10C bin 1x1
Astrodon HA 36mm - 5nm: 90x600" -10C bin 1x1
Astrodon HA 36mm - 5nm: 51x900" -10C bin 1x1
Astrodon Olll 36mm - 3nm: 80x600" -10C bin 1x1
Astrodon Olll 36mm - 3nm: 45x900" -10C bin 1x1

Integration: 53.8 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 21.56 days

Avg. Moon phase: 56.05% job: 2895349

RA center: 306.334 degrees

DEC center: 40.181 degrees

Pixel scale: 0.835 arcsec/pixel

Orientation: 6.901 degrees

Field radius: 0.850 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory


IC 1318-Gamma Cygni Nebulosity (The Butterfly Nebula) (4 panel mosaic)

This image is a 4 panel mosaic, captured using a my 9.25 SCT. It is the most ambitious image I have attempted to date. I hope you enjoy. your comments and input are always welcome.

Distance: 5000 Light Years

IC 1318 is a giant HII region and one of the brightest among all the emission clouds in the Cygnus complex. The visible HII region spans over 100 light years. The bright star projected in the center of the nebulosity is a class F8 star known as Sadr or Gamma Cygni. Its true location is only 750 light years away and not related to the nebulosity which is much more distant at 5000 light years. There is considerable obscuration of the region due to intervening dust within the great rift of the Milky Way which attenuates the light of many of the bright stars spread through the region. The great rift represents a series of overlapping dark clouds that create a division in the Milky Way between the Cygnus and Sagittarius star clouds.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


IC 1318 - Gamma Cygni Nebulosity (4 panel mosaic), 


            Randal Healey

In these public groups

Cloudy Nights
Narrowband imaging