M48 / NGC 2548

Designation(s)M48, NGC 2548
Object Type(s)Open Cluster
Relevant Catalog(s)All (Chron), Messier, NGC
Obs. Lat/Long42° 17', 073° 57'
ConstellationHydra
Date and Time Observed2024-04-20 21:58:00
InstrumentSeeStar S50 f5.0-250mm FL
CameraBuilt-in IMX462 Sensor
Image DetailsTotal integration time was 2m. Exposures 10s@auto gain. 93% moon; intermittent high clouds. Darks subtracted, no flats. .
DescriptionLocked onto this because it was bright enough and far enough from the moon to image well, quickly. At one level, just another Messier open cluster. In this case, Messier added the listing in 1771, but with the RA incorrect, off by 5°. Caroline Herschel, sister of William, was the first to publish the object with the correct location in 1783.
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