Thank you for sharing your photos - this is exactly what this project is all about! :-)
The Small Rosette Nebula (Sh 2-170), also known as LBN 577.
In the late 1950s, American astronomer Stewart Sharpless discovered the large nebula Sh 2-170 on photographic plates from the 48-inch Schmidt telescope of the Palomar Observatory Sky Survey. In 1959, he published his discovery along with 313 H-II regions in a catalog. He classified it as a round structure, between amorphous and filamentary, with medium brightness and a diameter of 20 arcminutes. [310]
In the "Catalogue of Bright Nebulae" by Beverly Lynds, published in 1965, this nebula is listed as LBN 117.62+02.29 or LBN 577. [270]
The nebula resembles the larger and brighter Rosette Nebula (NGC 2237), hence its nickname "Small Rosette Nebula."
I captured this back in winter, in January. I shot a little, stacked the data, and then forgot about it. Since I took the shots, I might as well share them.
Good afternoon, could you please advise? I shot as you recommended at zero gain, but no software can stack these frames; it finds very few stars, only 3-4. The native ASIAIR app stacks them but crashes when saving. I captured M51: about 15 light frames at 120 seconds each, 30 dark frames at 120 seconds, and 50 bias frames at the shortest exposure. The atmosphere was about a 4 out of 10, and the mount was drifting a bit, so about 15 frames went to the trash.
Comments
Comments are available only to registered users. Register or log in to leave a comment.