| Designation(s) | M10, NGC 6254 |
| Object Type(s) | Globular Cluster |
| Relevant Catalog(s) | All (Chron), Messier, NGC |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Ophiuchus |
| Date and Time Observed | 2024-05-08 00:01:00 |
| Instrument | EdgeHD 8" f10-2,032mm FL |
| Camera | ASI294mc-Pro |
| Image Details | Up is 271.6 degrees E of N. Transparency: Poor. Total integration time was 10m. Exposures 30s@305g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | This is object #3 discovered by Messier himself on May 29, 1764: "Nebula, without stars, in the belt of Ophiuchus.... This nebula is beautiful & round; one can only see it with difficulty in an ordinary telescope of 3-feet [FL]." <--> M10 ranks 10th in brightness and 5th in size among Messier GC's. Too bad Messier couldn't see the beautiful blue giant stars that liberally accent the surface. It's highly symmetrical and, as best I can measure, roughly as tall as it is wide. |
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