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Jan 032016

IC443 the Jellyfish Nebula, also known as Sharpless 248 is in the constellation Gemini. It is a supernova remnant that could have occurred 3000 to 30,000 years ago. It’s approximately 5ooo light years from earth. IC443 is about 70 light years across.

This image was taken over 2 nights with a total of 115 images, of which 103 were 5 minute exposures and 12 were 15 minute exposures. for a total of 695 minutes or 11.58 hours of exposure time using 3 filters, all narrowband, HA (hydrogen alpha emission line), OIII ( oxygen³ emission line), and SII (sulphur² emission line). For this image I used the HA for RED, SII for Green and OIII for blue to create this false color image.