sadr


IC 1318 (Sadr Region)

Buy a Print This is a large region of nebulosity (mostly hydrogen) around the star Sadr in the constellation Cygnus. From Wa-chur-ed Observatory in May of 2011. As is usual for this observatory, this is a narrowband image, consisting of a hydrogen-alpha image for the red channel and oxygen-3 for green and blue channels. Scope: AT111EDT at f/5.6 Mount: Orion Atlas/EQMOD Camera: QSI 583 at –25C Exposure: 10 x 480 seconds H-a, 7 x 480 seconds O-3 (2 hrs 16 mins total)