IC443
 

IC443 is a supernova remnant in the constellation Gemini, just east of the bright star Propus. This nebula is thought to have been produced by a supernova explosion about 30,000 years ago. It is 5,000 light years distant. In this image, north is toward the upper-right, and Propus is out of view toward the bottom.

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IC443

Equipment Celestron 9¼" at f/5.6 on a Celestron CGE equatorial mount
SBIG ST-8XM camera
Optec IFW filter wheel with Astrodon TruBalance LRGB filters
Optec TCF-S focuser
Optec Pyxis camera rotator
Imaging and autoguiding with MaxIm DL 4.06
Exposure
Luminance   136 min. (68 x 2 min.), binned 1x1, -20°C
Red   22 min. (11 x 2 min.) binned 2x2, -20°C
Green   22 min. (11 x 2 min.) binned 2x2, -20°C
Blue   22 min. (11 x 2 min.) binned 2x2, -20°C
Processing Master dark frames (1x1 lum and 2x2 RGB): 35 x 2 min. sigma-reject combined
Dark and flat frame reduction in CCDSoft
Sigma-reject combined
Processing and LRGB-combined in Photoshop CS
Date and Location 08 January 2005    Montpelier, VA    N 37° 49' 12", W 77° 42' 06"