Sh2-239 and LDN 1551

by Gary Imm

Objects in field: LDN 1543, LDN 1546, LDN 1551, LBN 819, LBN 821, Sh2-239

Equipment: Celestron RASA 11" V2, ZWO ASI6200MM Pro

Integration: 1h 40m

This is an image of an HII region (Sh2-239) and a dark nebula (LDN 1551), both located 500 light years away in the constellation of Taurus. The dark nebula spans about 3 light-years. The highlight of the image to me are the jet outflows from Herbig-Haro objects, 11 of which are identified on the annotated mouseover. Many of these objects are red due to ionized hydrogen gas, which is their typical…