Horsehead and Flame Nebula area of Belt of Orion. Taken Jan 17, 09 with 77mm f/4 Borg astrograph lens (300mm focal length) and Canon 20Da camera at ISO 400 for 4 x 15 minute exposures. On AP Mach 1 mount. Autoguided with SBIG ST402 camera and PHD Guider. Excellent night but lots of snow and sky was good but somewhat lit by snow illumination.
The area around the Belt of Orion, with the Horsehead and Flame Nebulas at bottom flanking the bright star Zeta Orionis, aka Alnitak, with Messier 78 at upper left. Taken from home, on a slightly hazy and frosty night, Feb 7, 2013, using the Hutech modified Canon 6D at ISO 800 and the TMB 92mm apo refractor at f/4.8 for a stack of 6 x 7 minute exposures.
Horsehead Nebula region with NGC2024 and 2023, and B33 dark nebula. Stack of two 15-minute exposures with Canon 20Da, at f/6 with 5-inch AP apo refractor, ISO400, and Long Exposure Nosie Reduction ON in camera. Ambient temp was about -3° C. Taken Dec. 29, 2005. Noise reduction applied at RAW conversion stage, and Noise Ninja applied to both layers at start before processing and to single flattened layer at end after processing and stretching. Image showed dithered dark areas initially after Levels adjustment but this smoothed out after flattening of original image and adjustment layers.
