http://panther-observatory.com/gallery/deepsky/media/M51_250403.JPG
M51, the well known Whirlpool galaxy, an interacting pair in Canes Venatici - at good transparency;
3x10 min and 7 x 5 min at ISO 200 with the D60 and the C11 at f/5;
Image calibration, extended addition stacking and deconvolution in IP; levels, curves, unsharp mask, saturation increased, cropped, all in Photoshop; noise reduction in Neatimage;
