M71 in Sagitta
M71 also known as NGC 6838 is a globular cluster in the constellation Sagitta near the middle of the image. In the upper left corner, the planetary nebula WeSb 5 (PN G058.6–05.5) is visible, while Sh2-84 and a crescent shaped Wolf Rayet nebula associated with the Wolf Rayet star WR 128 can be found in right part of the image. The blue crescent nebula around WR 128 was discovered in 1982 and is formed by mass loss ejecta from the star, which is ionized by its radiation. The huge Ha cloud in the background is uncatalogued and its nature is unknown. It can best be seen in the starless Ha image, which was created using a Red Continuum filter. Best seen in the annotated image is the very small planetary nebula Mul 5, which was discovered by the amateur astronomer Lionel Mulato in 2013.
The field covers about 3.5x3.5 deg of the summer sky. Long exposed Ha data was combined with OIII and RGB. North is up in this image.
The field was suggested by Sakib Rasool who helped me creating the text and annotations.
Finder Chart M71 Cluster in Sagitta
Image created by Skychart