Narrow band Dumbbell Nebula taken with Astrodon 3nm Ha, NII, and OIII narrow band filters where
R = NII, G = OIII, and B = OIII.
Exposure times are: Ha= 7 X 20 min, NII = 8 X 20 min, and OIII = 6 X 20 min, all at -35 and bin 1X1.
SBIG STXL 6303 camera/ FW8G/ AO-X and AT 16RCT telescope with AP 27 TVPH reducer.
AP 1200 mount. Frames acquired with MaxIm DL 6, calibrated and combined in CCD Stack2. Processed with PixInsight 1.8.
Stardust Ranch, Okeechobee FL