M47 / NGC 2422

Designation(s)M47, NGC 2422
Object Type(s)Open Cluster
Relevant Catalog(s)All (Chron), Messier, NGC
Obs. Lat/Long42° 17', 073° 57'
ConstellationPuppis
Date and Time Observed2024-10-04 05:03:00
InstrumentSeestar S50 f5.0-250mm FL
CameraBuilt-in SONY IMX462 Sensor
Image DetailsTotal integration time was 6m. Exposures 10s. Darks subtracted, no flats.
DescriptionThe second of four entries by Messier: "(February 19, 1771) `Cluster of stars, little distant from the preceding [M46]; the stars are greater [brighter].... The cluster contains no nebulosity.' " This was considered an independent discovery by Messier who was not aware it had been described before 1654 by Hodierna. It was also "lost" until 1959 when T.F. Morris recognized a sign error in Messier's original calculation (along with M48's). <--> From my perspective, this is a simple cluster (basically the brightest of the blue stars) on an interesting star field which I would never have considered observing if not for its inclusion on the Messier list. Having sought high profile additions just before publication, Messier appears to be a returning to the form of his 1764 entries.
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