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| M75, A Globular Cluster, - this image cropped and reduced from the original photo, Click on photo above for a full frame full rez image. |
| M75 was observed by Charles Messier on October 5 and October 18, 1780. After noting its position, he added it to his catalog. William Herschel described it some years later as a "miniature of M3." Personally, I find it to be almost identical in size, distance and appearance to M54. Except M54 has the distinction of probably being the core remnant of a once nearby galaxy. At a distance of about 67,500 light years, M75, along with M54 is one of the more remote of Messier's globular clusters, lying well beyond the Galactic center (which is about 47,600 light years distant). M75 appears as a compact, concentrated globular. Because of this and its distance, larger scopes are required to resolve it into stars. Its angular diameter of 6.6' corresponds to a linear extension of almost 130 light years. It is of high luminosity, glowing with the light of 180,000 suns. It is at its height in July and August, to the left of the Milky Way, about 25 degrees below the galactic equator. |
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10"
F6.3 Schmidt Cassegrain Telescope, (1600mm F.L.) Modified Canon
300D camera with IR-UV filter, placed at the scopes prime focus |