(IAAC) Obj: NGC 7023 (Cr429, HIV-74, LBN18) - Inst: 40" f/5 dob
Observation Poster: Mark G.Birkmann <email@example.com>
Observer: Mark G.Birkmann
Your skills: Intermediate (some years)
Date/time of observation: 8-14-2001, 6:25 UT (1:25 CDT)
Location of site: New Haven, Missouri (Lat ~38, Elev ~700 feet)
Site classification: Rural
Sky darkness: 5 <1-10 Scale (10 best)>
Seeing: 5 <1-10 Seeing Scale (10 best)>
Moon presence: Minor - crescent or far from object
Instrument: 40" f/5 dob
Magnification: 164x, 250x, 385x
Filter(s): none used
Object(s): NGC 7023 (Cr429, HIV-74, LBN18)
Category: Open cluster. Reflection nebula.
Class: 4 b1
Data: mag ? size mag of associated star 7.5 size of nebula 14'
Position: RA 21:01m 36s DEC +68:10' 36"
With the 35mm Rini I noted a small bright area of nebulosity around a
bright star as well as a faint streak of nebulosity to the north east
oriented southeast to northwest with a P.A. of about 340. At this
power 3 stars were associated with the nebula. At 250x I noticed 6
stars and also some detail in the southern part of the nebula. At 385x
I noted a dark lane running through the south part of the nebula from
north east to southwest. The dark lane appeared to start near a star
and was very narrow until it reached a point south of the center of
the nebula. It then widened to the south west as the nebulosity began
to fade. The edges of the dark lane were sharp as was the eastern edge
of the nebulosity to the south of the dark lane. At 385x 8 stars
appeared to be associated with the nebulosity.
Optional related URLs: http://www.fortunecity.com/greenfield/twyford/637/drawings.htm
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