(IAAC) Obj: NGC 6153 - Inst: 15" f4,5 Obsession

Observation Poster: Armin Hermann <burmeseinn@yahoo.com>
Observer: Armin Hermann
Your skills: Advanced (many years)
Date/time of observation: 11 May 05
Location of site: Sangkhlaburi, Thailand (Lat 15.09 N, Elev 200m)
Site classification: Exurban
Sky darkness: 5,8 mag <Limiting magnitude>
Seeing: 10 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 15" f4,5 Obsession
Magnification: 342x
Object(s): NGC 6153
Category: Planetary nebula.
Constellation: Sco
Data: mag 10,9magv  size 24"
Position: RA :  DEC -40:
NGC 6153 forms a beautiful 5-arcmin-trapezium with 3 bright stars. NE of the 
planetary is an 8,2mag orange star, a blueish-white 9,8mag star to the N and an 
11,3mag double star with equally bright components of of white and blue color. 
The disk of the 6153 itself is blue, very bright and approx 25" diameter and a 
slightly oval shape (N-S elongated). It features a darker center and I saw hints of a 
dumbell shape similar to IC4406 with the W and E lobes of the planetary being 
slightly brighter. Very impressive object! Magnification 342x.
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