(fritz kleinhans)
Flame and Horsehead Nebula:
March 6, 2010, from Prairie Grass Observatory, IN
500 mm f4 AIS Nikkor at f4.8, Canon-Hutech 400D @ ISO 400
(800 now preferred)
Probably on GM-8 mount. Good sky for PGO, high transparency.
Some cropping; full scale image. 2.4 arc-sec/pixel.
15 x 6 min subs = 90 minutes, 3 darks, temp in 20's F; camera very happy.
(Note the previously undiscovered blue nebula at bottom center. It is probably an internal lens reflection of zeta Orionis.)
fwk 2024