NGC 1637 is an intermediate spiral galaxy in the constellation Eridanus, approximately 35 million light years from Earth.
Photographing this galaxy proved quite a challenge, not only because of our light polluted skies but also the galaxy’s apparent size. It is 4x3.4 arcminutes, or about 1/8 the diameter of the moon from our point of view (about 1/15 of the width of your little finger if held at arm’s length). It is also exceedingly dim at magnitude 11.5.
We used 6 telescopes to capture this galaxy. Voyager controlled our 600mm and 400mm systems to capture luminance detail, and Voyager SC Observatory Version controlled our 4-scope 300mm widefield array to capture RGB color. A total of almost 59 hours was captured over a four night period.
Larger version and full details: https://www.masterdarks.com/ngc-1637/