Messier 66 a weak barred spiral in Leo with loosely wound arms, part of the Leo triplet. Imaged using 8 inch RC telescope @f/8 unguided using MyT mount, QSI 683 mono camera. Exposure times LRGB 240 second sub frames x 250. 30 each channel RGB the rest on Lum. 5 hours spent on HA as well, sub frames 900 seconds.
I could have cropped it out I suppose the rainbow diffraction pattern top L of image is created by a magnitude 7 star just out of field of view.