Gamma Cygnus nebula
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 nebulaeition to the emission diffuse nebulae.
Ha(3nm): 3 x 10min (Tot: 30 min) Bin:2
SII(5nm): 3 x 10min (Tot: 30 min) Bin:3
OIII(5nm): 2 x 10min (Tot: 20 min) Bin:3
ASA N12 Astrograph F/3.6
3" Wynne Corrector 0.95x
Atik 490 EX camera @-20C
Astrodon Ha 3nm, SII 5nm and OIII 5nm
Valla Observatory (FROSON, Sweden)
Dec 6, 2015
Images calibrated and processed in AstroPix
Calibration by applying Flat-Field
Registration with the AstroPix registration tool.
Color image with the AstroPix RGB mix tool.
Noise removal with the AstroPix Noise removal tool.
Final color adjustment in Photoshop CC
Scale: 0.92 arcsec/pix
FOW: 52x42 arcmin