The bright spiral galaxy Messier 63 (NGC 5055) in Canes Venatici, shown from a red-light CCD exposure with an RCA CCD at the 1.1-meter Hall telescope of Lowell Observatory. North is at the top and east to the left, for direct comparison with a chart or eyepiece view. This display uses a logarithmic intensity transformation to preserve information across a wide dynamic range. The field is 3.6 by 6.0 arcminutes, which doesn't cover the whole galaxy (the bigger TI CCDs had gone to Australia at the time, to support observations of the Shoemaker-Levy 9 impact). The image was obtained in April 1994 by Bill Keel and Anatoly Zasov. It's pretty embarassing, but you really should compare the magnificent Subaru image of NGC 5055 released in June 2000... Who'd have expected such sharp imaging from the ground over such a wide field?
Last changes: 5/2001 © 2001