Nebulosity around Sadr

20:09 22/8/2008 UTC

This image is centered on Sadr (Gamma Cygni) which is the center star of constellation Cygnus. There is lots of nebulosity around it. Most notable and obvious feature is IC1318, The Butterfly Nebula in the left side of the frame. IC1318 is not associated with Sadr, they just happen to be at the same direction. The nebula is believed to be at least twice as far at 3000 light years from earth. There is also a nice open cluster NGC6910 up from the Sadr.

NGC/IC Object List:
NGC6910 open cluster RA:20h23m12.0 Dec:+40°46m'43" BMag: , OCL 181
IC1318 gaseous nebula RA:20h22m12.0 Dec:+40°15m'24" BMag: , LBN 245 Gamma Cyg Nebula

Camera: Modified Canon EOS 350D | Telescope: Skywatcher ED80 Pro 80mm f7.5 refractor, William Optics 0.8x focal reducer | Mount: Vixen GP-D2, Boxdoerfer PowerFlex MTS-3SLP drive controller | Filters: Astronomik H-alpha 13nm 2", Astronomik EOS L UV/IR Insert Filter | Guiding: The Imaging Source DMK 21AU04.AS CCD camera, Orion ShortTube 80mm f5 refractor, Stark-Labs PHD Guiding | Exposure: 11x600s (1h50m) ISO800 f6, 16 darks, 13 flats, 0 bias | Software: Stark-Labs Nebulosity 2 | Location: 60°31'N 26°52'E (Koivula/Kotka,FI) | Image Field: 2.67 x 1.782 degrees | Image Center: Ra 20h22m23s Dec +40°17'38" | Target altitude in the beginning of the exposure 70°