Basic object information
Name: M 42
Type of object: Bright nebula
Magnitude: 4.0
Size: 45.0'x45.0'
Object classification: E+R
Description: !!!,Theta Orionis and the great nebula M42
Notes: Trapezium* 6.7-7.7m,>50 var* invl,M 43 to NE


Catalog position for epoch J2000.0
Right ascension: 05h 34m 54.0s
Declination: -5 32' 00"

Constellation: Orion

Observer: Iiro Sairanen
Obs. place: Lakasenpelto, Imatra, Finland
Date/Time: 10/11.2.2004 21:05-21:45

Telescope: Newton 406/1830

Magn: 244x

Filter: deepsky

Field: 12'

NE Lim.mag: 5

Background sky: 4

Seeing: 3

Height: 24
Visuality: I
Weather: Typical Finnish winterweather, -17C

The Great Nebula of Orion is probably the best known deepsky-object in the sky. This is a classical field of the trapezium zone trough 16" telescope with 244x and Lumicon deepskyfilter. Whole field is full of nebulosity and several details are easily in view. The nebula is so bright that it kills your dark adaption. Conditions were quite poor but the object was still belief. I saw only four stars in trapezium. Sinus Magnus is a huge canal which is bounded by bright nebula. Sinus Gentilii is anorther clear dark zone. The most beatifull area is Regio Huygeniana with its fibrous details. Few stars are involved with nebula.

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