Ha First light on my 550D cooled new project from urban sky and moon.
Field center: (RA,Dec) = (306.8, 40.09) deg
Field center: (RA H:M:S, Dec D:M:S) = (20:27:16.741, +40:05:40.340)
Field size: 2.53329 x 1.59851 degrees
Field rotation angle: 173.949 degrees E of N
pixel scale 3.6 arcsec/pix