M81


Galaxy M81 in Ursa Major imaged through an Ha (5nm) filter from the backyard observatory on 3/24/19.

Telescope; TEC 140mm refractor; 980mm fl at f/7; Camera: ZWO ASI1600mm. 9 x 10 min exposures. FOV = 60' x 41' (reduced from original)

Image shows just how much hydrogen emission (and by extension, star formation) there is coming from this galaxy located 11.7 million ly away..