Technical Data
Optics Takahashi FS-128 Apochromatic refractor
Focal Lenght 780 mm
Focal Ratio f/6.1
Exposure Time Ha=112 min (14x480sec) -15 degrees
CCD camera SBIG STL-4020, Astroson 2" Hydrogen-alpha filter
Processing MaxIm DL, Photoshop 5.5 and applied HDRWavelet from Pleiades PixInsight
Location Berkshire, New York
Date of exposure 9/1/2005
Mount Astro-Physics 1200

nebula 


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Joseph Schaefer 2002