M71 - Globular Cluster in Sagitta

M 71 is a globular star cluster located in the constellation of Sagitta, the arrow. It lies approximately 12 thousand light years away and is 27 light years in diameter.This cluster was discovered by Phillipe Loys de Cheseaux in 1745. Charles Messier added it to his catalogue in 1780.

This star cluster is atypical in that, unlike other globular clusters, it lacks a very dense core and contains many metal-rich stars. In fact, it was considered to a be dense open cluster until the 1970's.


Takahashi TOA-130NFB

Camera: Modified Canon 650D; raw capture; ISO 1600
Mount: iOptron CEM 60
Guiding: QHY 5L-II on 60mm guide scope

9 @ 5 min.


Images were focused using the camera's live view and a Bahtinov mask. They were captured, aligned, and combined in ImagesPlus. The final image was cropped and adjusted in Photoshop.


Taken from my backyard observatory in southeastern Minnesota on 8/18/20

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