(IAAC) Obj: NGC 6818 - Inst: TV-102 (102mm f/8.6 APO refractor)


Observation Poster: Ron B[ee] <ronby@home.com>

Observer: Ron B[ee]
Your skills: Beginner (< one year)
Date/time of observation: 07/20/01
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft)
Site classification: Exurban
Sky darkness: 4.5 <Limiting magnitude>
Seeing: 8 <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, 60x, 110x, 176x, 220x
Filter(s): none
Object(s): NGC 6818
Category: Planetary nebula.
Constellation: Sgr
Data: mag 9.9  size 24" x 12"
Position: RA :  DEC :
Starhopping with 22x makes it easy to find.  Already looking like unfocused 
star.  At 30x, more apparent as blue/green PN.  The yellowish orange star 
SAO162923 (used as focus star) and blue SAO162938 and the PN form a triangular 
shape.  More PN apparent at 60x and dimmer than SAO162923.  Bright and definite 
blue/green color.  Definitely PN at 110x, triangular shape still fit within 
FOV, round shape.  Hint of oval shape at 176x (best view), glimpse of ring 
structure.  Still bright and green.  Glimpse of 1-2 very faint outer stars with 
averted vision.  Still bright and green at 220x.  Can now see one of the faint 
outer stars with direct vision popping in/out.  At times, looked like vibrating 
oval perhaps due to seeing.  No central star detected.

Known as the "Little Gem", I really quite agree with this!  A favorite!

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