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(IAAC) Obj: IC 434 (B33, The Horsehead Nebula) - Inst: 22", f/4.1, Dob
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Observer: Eric Honeycutt
Your skills: Intermediate (some years)
Date/time of observation: 10/14 -15; 0333 EDT
Location of site: Bladen Lakes State Forest (Lat 35, Elev 400+)
Site classification: Rural
Sky darkness: 6.9 <Limiting magnitude>
Seeing: 5 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 22", f/4.1, Dob
Magnification: 74x, 118x, 216x - UHC
Filter(s):
Object(s): IC 434 (B33, The Horsehead Nebula)
Category: Emission nebula.
Class: Dark Nebula/E Nebula
Constellation: Ori
Data: mag -- size
Position: RA : DEC :
Description:
After getting to the precise position below Zeta Orionis, I used a 22
Nagler with a UHC filter to id the Horsehead. After a few minutes, the
horsehead shape popped right out. Once obtained, it stuck right out as
a direct vision object. Much larger than I anticipated. Still very
faint by most standards but it is relatively easy once you know where
it is within your field. There is no need for a H-beta filter or even
a O-III at this aperture and dark skies. The snoot of the horse was
also visible but with averted vision. Best view was with a 35 Panoptic
at 74x with a UHC. I did not detect the Horsehead or the background
nebula (IC 434) with a 12 Nagler and a O-III. Field was just too
dark. Need to try this one under mtn skies for even higher
transparency.
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