Description

This emission and reflection nebula is the remnant of a supernova explosion in Cygnus. It's dimension is roughly 25x16 light-years. For a more detailed description, see Rob Gendler's description of the Crescent nebula.

Imaging Session

• Date: September 11, 2005
• Location: CAO Observatory, Thornbury, Ontario
• Camera: SBIG ST-10XME
• Optics: Vixen R200SS/Paracorr - 8" f/4.6 Newtonian
• Filter: AstroDon 6nm H-alpha filter
• Exposure: 9 x 10 minutes at -15C

Processing

• Maxim DL: Calibration with Russell Croman sigma-reject combine plug-in
• AIP4WIN V2: RL deconvolution
• ImagesPlus: DDP, high-frequency noise reduction
• Photoshop CS: Levels, curves, high-pass filter, contrast adjustments