(IAAC) Obj: M42 (NGC 1976) - Inst: 10" f/6 Newt

Observer: Susan C. French
Your skills: Advanced (many years)
Date/time of observation: 1-10-97   7:45 PM EST
Location of site: Glenville, NY (Lat 42.90, Elev 990 ft)
Site classification: Rural
Sky darkness: poor <Limiting magnitude>
Seeing: poor <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" f/6 Newt
Magnification: 13 mm Nagler
Filter(s): H-beta
Object(s): M42 (NGC 1976)
Category: Emission nebula
Constellation: Ori
Data: mag   size 
Position: RA 05:35.3  DEC -05:23
During an abortive attempt to see if I could spot the Horsehead on a
hazy night, I looked at M42. I was surprised to find that the H-beta
filter made the western arc of M42 stand out strong and long, heading
NW, abruptly turning SSW (with a fainter fan continuing NW), and then
curving south and fading out. Only the NW fan was easily visible
without the filter. In contrast, the eastern arcs of M42 (especially
the long one just inside the outermost short one) looked better
without the filter. Note that Orion was still in the upper reaches of
the glow from Schenectady.
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