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Messier 15
The globular cluster Messier 15 is found in the constellation Pegasus. Globular clusters are large typically spherical clusters of stars gavitationally bond together. Current estimates suggest M15 contains at least 450,000 solar masses with a very dense center. Image taken with a 178 mm f/9 Astro-Physics refractor and a modified Canon 50D DSLR on an Astro-Physics 1200 mount (70 x 60 sec lights; 30 darks; 66 flats; Images Plus and Adobe Photoshop CS5 software).
Eight_hr_total_exposure.jpg Thors_Helmet.jpg Messier_15.jpg M_46___the_planetary_nebula_NGC_2438.jpg Messier_82_Total_exposure_685_minutes.jpg
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