(IAAC) Obj: NGC 1491 - Inst: 20" F4.4 Dobsonian Newtonian
Observer: Nick Martin
Your skills: Intermediate (some years)
Date/time of observation: Jan 17 2001 20:00UT
Location of site: Bonnyton House, By Ayr, Scotland UK (Lat 55:24:56, Elev 120)
Site classification: Exurban
Sky darkness: 6.0 <Limiting magnitude>
Seeing: 3 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 20" F4.4 Dobsonian Newtonian
Object(s): NGC 1491
Category: Emission nebula.
Data: mag 11.2 size 9' x 6'
Position: RA 04:03 DEC 51:18
A compact gaseous nebula,it is a curious strip of nebulosity with 7-8 faint
stars and a brighter(mag11) star embedded in it. The mag. 11 star is enveloped
in fainter nebulosity near the western apex a triangle of brighter nebulosity.
The brightest part of the nebula, a strip running roughly north /south, shows
some uneveness in brightness but no definite structure. A UHC filter enhanced
the contrast of the nebulosity.
Through the 20" it closely resembles the illustration in Lughinbuhl and Skiff.
It is a worthwhile object to seek out as it is such a well defined nebulosity
and the faint embedded stars add to its attraction.
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