In an area of the Cygnus constellation just west of Deneb, dominated by strong Ha emission in the background, making a characteristic three-dimensional effect, is this weak and beautiful SNR (also known as G82.2+5.3, CTB88 or W63) emitting in the optical range mainly in Oiii, even some Ha filaments are visible.
It is believed to have been the result of a SN between 14,000 and 21,000 years ago. It has a perspective size of about 86′ x 65′ and real dimensions of about 150 light years in diameter. Its filaments expand at a speed ranging between 35 and 70 km/s.
The SNR is about 5,000 light years away.
Ha: 98×600″
OIII: 83×600″
RGB: 3x150x60″
36 hours
HOO+RGB Stars
Samyang 135mm f/2.8
Qhy 294MP
Eq6-R
It has been a difficult image to process, given the amount of signal, finding a balance between Hydrogen, Oxygen, and the stars.
I decided to shoot Ha, Sii, and OIII, but I liked the result of the HOO palette much better when I processed both palettes.
I am very happy with the result of the 36 hours at f/2.8 at 135mm.