Messier M42

M43     is above M42

Object Information
Messier object: M42
Common name for Messier object: Orion Nebula
NGC (New General Catalog) number: NGC 1976
Discription: Diffuse Nebula
Located in constellation: Orion
Right ascension in hours:minutes: 5:35.4
Declination in degrees:minutes: -5:27
Visual magnitude: 4
Size: 85 x 60 arc minutes
Image shows both M42 & M43
Image size: 55.23 arc minutes high by 40.98 arc minutes wide
Image orientation: North is top, East is left
Detailed discription of M42 in SEDS Messier database
Other Messier galleries, images or catalogs

Observing Log
Date December 21, 1998
Time at end of first CCD image 01:07 PST
Time at end of last CCD image 01:20 PST
Observing Location: At home on the drive way
Observation of object: M42 is a very large bright diffuse nebula with extended fine filaments. M43 diffuse nebula is located north of M42.
Sky Conditions
Sky transparency: 5.5 (Magnitude of the faintest star visible with the unaided eye in Ursa Minor)
Moon sets at 18:31 PST December 20, 1998
Astronomical twilight ends in the evening at 18:16 PST December 20, 1998
Astronomical twilight starts in morning at 6:00 PST
Observing Equipment
80 mm aperture refractor telescope and CCD Cookbook Camera
CCD image time: 31 - 15 seconds images added together
CCD dark calibration frames: 16 - 15 seconds dark frames
JASC Inc. Paint Shop Pro version 4.12 used for editing star blooming in the image and for croping the image to 187 pixels wide by 214 pixels high.

Use Test patterns to calibrate monitor brightness, contrast, height and width