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(IAAC) Obj: M42 - Inst: 10" f/5.6 newtonian on a dobsonian mount



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Observer: Randy Muller
Your skills: Intermediate (some years)
Date/time of observation: December 18, 1997 9pm PST
Location of site: Roseville, CA (near Sacramento) (Lat 38N 44', Elev ~50')
Site classification: Suburban
Sky darkness: 5.3 <Limiting magnitude>
Seeing: 3 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/5.6 newtonian on a dobsonian mount
Magnification: 55x, 190x
Filter(s): 
Object(s): M42
Category: Emission nebula
Class: 
Constellation: ORI
Data: mag   size 
Position: RA :  DEC :
Description:
I began the night with what has to be one of my favorite objects, M42, the Great
Nebula in Orion.  The blue-green color was obvious around the Trapezium, fading
to gray in the outer reaches.  The Trapezium only showed 4 stars at 190x.  The
seeing terrible: The disks of stars A and C were so large that they obliterated
E and F.
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