(IAAC) Obj: NGC 6572 - 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: 07/17/01
Location of site: 117h 9m W (Lat 32h 43m N, Elev 2000 ft)
Site classification: Exurban
Sky darkness: 5 <Limiting magnitude>
Seeing: 9 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: TV-102 (102mm f/8.6 APO refractor)
Magnification: 60x, 110x, 146x, 176x, 220x, 293x, 352x
Filter(s): none
Object(s): NGC 6572
Category: Planetary nebula.
Constellation: Oph
Data: mag 8.1  size 18" x 12"
Position: RA :  DEC :
This object has been eluding me for about one month now because I was using 
freebie charts.  Tonight with The Sky chart, it was still tough to locate by 
star hopping, being so tiny.  At 60x, it still looked like a star.  At 110x, 
the nearby stars are all dimmer, expect the PN.  It has blue-green color and 
still looked like a lightly bloated star that canít come to focus.  At 146x 
(still blue-green), better view and definitely a PN.  The 60 degree FOV of the 
Radian allowed me to see the PN as a ball and the stars to east forming a 
racket (5 stars forms a racket and 3 stars form racketís hanlde Ė SAO123243, 
GSC443:638, 443:1000, 443:2045, 443:1596, 443:2072, 443:2888).  Got impression 
of brighter center.  At 176x, 220x and 293x, the PN retained its brightness.  
Oval shape was detected at 293x and 352x.  At 293x, 4 stars form a square (part 
of the racket) to the east and fit the FOV!  Overall, the size of the PN is 
like that of Uranus.  Much brighter than M57!

I've discovered that a high-magnification wide-field eyepiece is very useful
in allowing me not only to observe the object, but also to see how it relates
to its surroundings.

My Favorite!

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