NGC4872. The Coma cluster. This group of galaxies lies in the constellation of Coma Berenices. I took this image using my four inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding, with a set of Astronomik R.G.B. filters, an IDAS filter, and an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with flat field frames and bias frames to reduce the effect of noise and vignetting in the final image. The total exposure time was ten minutes for each colour filter and two hours for the luminance channel using the IDAS filter.
This image of the Coma cluster contains data from two telescopes , a 4 inch refractor and a ten inch reflector.
