by astromaster » Thu Jul 26, 2018 12:42 pm
I discuss this region in my June 2017 Sky & Telescope article "The Dark Wolf of Summer!" Barnard 228 is, of course, the main object in view and could be subdivided into Sandqvist Lindroos 12 and 13. The most significant object left out of the discussion, however, is Bernes 148 (also known as Parsamian Petrosian 81 - PP81 - or GN 15.42.0. This is a bright nebula seen in the left center of the image at 8th magnitude in a spot just above the two brightest stars and has 4 10th magnitude stars in an arc above it. It is interesting as a typical nebula covering double variable stars HT and HW Lupus each with a brightness of 10th magnitude. At 8th magnitude this is a nebula that is easily observable in any telescope if one has a dark sky. Richard P. Wilds
I discuss this region in my June 2017 [u]Sky & Telescope[/u] article "The Dark Wolf of Summer!" Barnard 228 is, of course, the main object in view and could be subdivided into Sandqvist Lindroos 12 and 13. The most significant object left out of the discussion, however, is Bernes 148 (also known as Parsamian Petrosian 81 - PP81 - or GN 15.42.0. This is a bright nebula seen in the left center of the image at 8th magnitude in a spot just above the two brightest stars and has 4 10th magnitude stars in an arc above it. It is interesting as a typical nebula covering double variable stars HT and HW Lupus each with a brightness of 10th magnitude. At 8th magnitude this is a nebula that is easily observable in any telescope if one has a dark sky. Richard P. Wilds