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M2 Globular Cluster

M2 is a globular cluster in the constellation Aquarius, discovered by Jean-Dominique Maraldi in 1746. It is one of the largest known globular clusters. M2 is about 55,000 light years from earth and contains about 150,000 stars in an area 175 lights years across. Its brightest stars are red and yellow giant stars. This is a stack of 57 exposures at 3 minutes - for a total of about 2.85 hrs of imaging time taken with a Sky-Watcher Esprit 100ED telescope and a QHY-268C OSC. Stacking and image processing with Siril, GraXpert, and Adobe Photoshop.

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Uploaded on August 4, 2024
Taken on September 21, 2024