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(IAAC) OBJECT: NGC6781(planetary) INST: 14.5" f/4.29 fl=1580mm



Observer:  Todd Gross
Your skill:  Intermediate - Many years
Date and UT of observation: 06/20/01 03:30GMT
Location & latitude: 22 mi. West of Boston, Ma. 42.3N
Site classification: Suburban
Limiting magnitude (visual): approx. 4.9 zenith, 4.7 vic.object
Seeing (1 to 10 - worst-best): approx. 5
Moon up (phase?): No
Weather: Mostly clear
Instrument: 14.5" f/4.29 fl=1580mm Newt 
Magnifications: 72, 176x
Filters used: None, UHC (lumicon)
Object: NGC6781
Constellation: 
Object data: Galaxy
Size(s): 2x2'
Position: 19:19 +06:32
Magnitude: 11.8
Personal "rating" this aperture: B/B+

Fairly large planetary ring, thick donut, 
brighter on the south side. Somewhat 
filled (much more so than m57) Round
and thick. Weaker center more visible 
with time. Almost appeared open on north
side, but not quite.  

Best at 176x in the 9mm nagler
a perfect magnification for this object. 
Only a very weak blue tint, otherwise grayish.
Best with UHC filter (lumicon), stood out
better against a sprinkling of foreground stars.


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