This image was obtained with the wide-field view of the Mosaic camera on the Mayall 4-meter telescope at Kitt Peak National Observatory. G70.5+1.9 is located near the edge of the giant HII emission nebula Sharpless 100 (Sh2-100). It is likely a supernova remnant, the leftovers of a star that exploded as a supernova years ago. The image was generated with observations in Hydrogen alpha (red) and Sulphur [S II] (blue) filters. In this image, North is left, East is down.
T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)