Emission
Nebula Surrounding Gamma Cygnus
Emission Nebulae in Cygnus
PLEASE CLICK ON THE IMAGE TO SEE THE FULL RESOLUTION (AT 72DPI) IMAGE
This glowing field of hydrogen is centred around the bright star Sadr
or Gamma
Cygnus - the central star in the consteallation Cygus aka The Northern
Cross.
At bottom left is the often imaged IC1318 or Butterfly Nebula, most
associated with Gamma Cygnus.
STL11000XME with Tak FSQ and Astronomik 6nm H-Alpha filter
9 x 20 minutes
Self guided on an AP900GTO
Flesherton, Ontario, Canada
August 30th, 2008
Ambient temp +14C; camera temp -20C; New Moon
Images captured and calibrated with darks and flats in CCDSoft
v5.0
Aligned and sigma-reject combined in Maxim DL
Levels, Curves and Contrast adjustment applied in Photoshop CS2
No sharpening but a mild noise reduction on the shadows
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