Starlight Xpress HX916; 2.84 arc-sec/pix Stellarvue Nighthawk piggybacked on LX200, guided by SBIG STV at 1575 mm EFL. Luminance = 23 x 180 seconds through Astronomik Type II IR-blocked clear filter. Sigma combined in Ray Gralak's Sigma pre-beta-11. Twilight flat-fields and matching darks.
full exif
