AstronomyUkraine Posted November 17, 2020 Share Posted November 17, 2020 CTB1 ia a supernova remnant in the constellation of Cassiopeia. I took this image in the summer, but have been playing with it, on and off for a few months. It is a very difficult object to image, because of how faint it is, and also difficult to process. I have over 40 hours of data in this image, and probably need more. There is approximately 15 hours of each narrowband filter to make this final SHO image. 9 Quote Link to comment Share on other sites More sharing options...
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