(IAAC) Obj: M42 (NGC 1976) - Inst: 4.1" f/5.8 AP Traveler

Observer: Susan C. French
Your skills: Advanced (many years)
Date/time of observation: 2-13-96   8:00 PM EST
Location of site: Florida Keys (Lat 24.60, Elev 0 ft)
Site classification: Exurban
Sky darkness: good <Limiting magnitude>
Seeing: fair <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.1" f/5.8 AP Traveler
Magnification: 7 mm Nagler
Object(s): M42 (NGC 1976)
Category: Emission nebula
Constellation: Ori
Data: mag   size 
Position: RA 05:35.3  DEC -05:23
Within M42, Trapezium stars A, B, C, D, orange E, and F are clearly
visible. The nebula more than fills the 56' field-of-view. The central
area around the Trapezium is mottled and greenish-grey. The "fish
mouth" dark area is east of the Trapezium and extends nearly to it. A
dim star is found just outside the north edge of this dark
penninsula. A "V" of 5 stars is found SE of the Trapezium with the
north arm brighter. The north arm of the V marks a sharp drop in
brightness of the nebula. The bright area bordering the north arm of
the V forks at the point of the V with the longer arm curving sharply
to the south and the other arm going in a more easterly direction.
West of the Trapezium, the nebula fans out broadly for about one-half
degree. The area between the west fan and the curving arm is faintly
filled with nebulosity.
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