Dumbbell M27 - deeper look (IOTD)

M27 Dumbbell (aka Apple Core Nebula) was the first planetary nebula to be discovered (in 1764 by Charles Messier). From his notes he reports: I…


From Sadr Till Tulip (IOTD)

My next holiday target was pretty classical - Cygnus constellation (Swan) narrowband widefield, that in the late summer rises high up to the zenith…