The Cocoon Nebula, an emission nebula spanning 12 arcminutes (1/5 degree) in the constellation Cygnus, is approximately 4,000 light-years distant and possesses a diameter of 15 light-years. This ...
This week’s first target is open cluster NGC 7209 in Lacerta. Through a small telescope, you’ll find this object hidden in a rich star field 5.8° southwest of magnitude 3.8 Alpha (α) Lacertae. Don’t ...