| Designation(s) | M39, NGC 7092 |
| Object Type(s) | Open Cluster |
| Relevant Catalog(s) | All (Chron), Messier, NGC |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Cygnus |
| Date and Time Observed | 2024-05-22 01:19:00 |
| Instrument | EdgeHD 8" f10-2,032mm FL |
| Camera | ASI294MC-Pro |
| Image Details | Up is 271.3 degrees E of N. Total integration time was 5m. Exposures 30s@305g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | Messier is credited with discovering this open cluster, recorded on October 24, 1764, nearly a month after M38 (his 17th so far). He notes: `Cluster of stars near the tail of the Swan; one can see them with an ordinary telescope of 3.5 feet [FL].' <--> As a "cluster" this is one of the least dense in the Messier Catalog. Nebulosity around several of the larger stars provides some interest. |
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