IC417 / NGC1931 Spider
IC417 / NGC1931 Spider and the Fly TriColor & BiColor
IC417 and NGC1931 are in the constellation Auriga aproxmatily 10,000 light years from earth. They are both young star clusters still embeded in glowing hydrogen gas and dust. The apparent diameter of NGC1931 is 3 arcminutes the apparent diameter of IC417 is 13 arcminutes. These are both emission and reflection nebulas.
IC417 Spider Crop
NGC1931 Fly Crop
IC417 / NGC1931 BiColor
IC417 / NGC1931 20min Ha Subframe
IC417 / NGC1931 20min Ha Subframes x 16 = 320 min combined image
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IC417 / NGC1931 20min OIII Subframe
IC417 / NGC1931 20min OIII Subframes x 10 = 200 min combined image
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IC417 / NGC1931 20min SII Subframe
IC417 / NGC1931 20min SII Subframes x 10 = 200 min combined image
Scope TMB130mm
Camera Apogee U8300
Mount Atlas EQG
Filters Astrodon Ha5nm OIII3nm SII3nm
Exposures Ha 5.3hrs OIII 3.3hrs SII 3hrs 20min subs
Location Connellsville Pa. Home Observatory 2011