Messier M41


Object Information
Messier object: M41
NGC (New General Catalog) number: NGC 2287
Discription: Open Cluster
Located in constellation: Canis Major
Right ascension in hours minutes: 6:46.0
Declination in degrees minutes: -20:44
Visual magnitude: 4.6
Size: 38.0 arc minutes
Image size: 55.23 arc minutes high by 40.98 arc minutes wide
Image orientation: North is top, East is left
Detailed discription of M41 in SEDS Messier database
Other Messier galleries, images or catalogs

Observing Log
Date of observation: February 19, 1999
Time at end of first CCD image 20:24 PST
Time at end of last CCD image 20:41 PST
Observing Location: At home on the drive way
Observation of object: M41 is an irregularly round open cluster with several very bright stars. A very bright star is located in the southeast part of the above image.
Sky Conditions
Sky transparency: 4.2 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Moon set at 22:02 PST on February 19, 1999
Astronomical twilight ends in the evening at 19:22 PST on February 19, 1999
Astronomical twilight starts in morning at 5:24 PST on February 20, 1999
Observing Equipment
80 mm aperture refractor telescope and CCD Cookbook Camera
CCD image time: 40 - 15 seconds images added together
CCD dark calibration frames: 104 - 15 seconds dark frames

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