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(IAAC) Obj: NGC 2023 - Inst: TV-102 (102mm f/8.6 APO refractor)
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Observation Poster: Ron B[ee] <ronby@cox.net>
Observer: Ron B[ee]
Your skills: Intermediate (some years)
Date/time of observation: 02/02/02 8:30pm
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft)
Site classification: Exurban
Sky darkness: 5.2 <Limiting magnitude>
Seeing: 6, but very transparent <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: TV-102 (102mm f/8.6 APO refractor)
Magnification: 22x, 30x, 73x, 110x, 146x
Filter(s): none
Object(s): NGC 2023
Category: Reflection nebula.
Class:
Constellation: Ori
Data: mag ? size 10'
Position: RA : DEC :
Description:
Saw nothing at 22x and 30x. Nabbed by my new 12mm Radian (73x); clearly seen,
round nebulosity around mag 7.8 star SAO 132464. Need to move very bright star
Zeta Orionis out of FOV. Form a triangle with mag 7.5 star SAO 132451 and mag
10 star GSC 4771:1154. No nebulosity seen around these 2 stars; so it’s a good
sign that TV-102 had nailed the nebula. Better view at 110x, nebulosity now
larger. 146x now reveals NGC 2023 as forming a smaller triangle with very dim
mag 12.5 star GSC 4771:1074 and mag 12.9 star GSC 4771:722! The nebulosity is
now very large with averted vision with radius extending about ¾ of the way
toward star GSC 4771:1074. Ink-black sky background in all of the other stars,
except the star with the nebula. Nebulosity is brighter than the two mag 12
stars. Remarkably it looked like this sketch I found on the web under the red
light!
http://www.skyrover.net/ds/ds_detail.asp?id=382.
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