The Markarian chain. This group of galaxies lies in the constellation of Virgo the virgin. I captured five-minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image. The total exposure time was 95 minutes using an IDAS filter for the image luminance. The colour data was taken from an old image . I was using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto guiding and an Atik 383L mono CCD camera.
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Using data from two scopes
