The Dragon nebula (fragment of the Gamma Cygnus complex)
9 Hours exposure (18x30 minutes) with an 18 inch F/4.5 newtonian running at F/8.5 (AP barlow lens)
ST-8XE camera at -30C
Guiding with AO-7 at 4 Hz
FWHM between 1.1" and 2.5"
50 nm FWHM Ealing H-Alpha filter
To give a better idea of where this field is, here is an wide field view of the Gamma Cygnus area (POSS Plates).
