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(IAAC) Obj: NGC 2261 - Inst: 4.5-inch (112mm) f/8 Reflector



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Observation Poster: Eric Vondra <parasyonok@ixpres.com>
Observer: Eric Vondra
Your skills: Intermediate (some years)
Date/time of observation: 27 Dec 2003 0530 UT
Location of site: Paris VA (Lat 39N, Elev 225m)
Site classification: Rural
Sky darkness: 7 <1-10 Scale (10 best)>
Seeing: 6 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4.5-inch (112mm) f/8 Reflector
Magnification: 50x, 100x, 200x, 360x
Filter(s): none
Object(s): NGC 2261
Category: Reflection nebula.
Class: 
Constellation: Mon
Data: mag   size 
Position: RA :  DEC :
Description:
In 50x I can see the star at the end and the triangular shaped nebula. A very 
nice view in 100x. I get a little bit of the curvature in the following edge
 of the nebulosity, which is fan-shaped with the star at the tip pointing 
south. It diffuses pretty smoothly out to the north, but I can see some 
mottling in it. Also it looks like the following edge right down by the star 
is probably the brightest part of the nebula. There is a little sparkliness in 
the nebulosity- maybe that's the seeing tonight. When I go to 200x, there is 
an odd effect of the tip star seeming to disappear- maybe an artifact of the 
seeing. All I see is nebulosity and a hint of the star- nowhere nearly as 
definite as in the lower powers. Also the nebulosity is more sparkly, 
reminiscent of what I often see in the Ring Nebula. The longer I look at it in 
200x, the better I can see the tiny tip star, but it's much less prominent in 
200x than in 100x or 50x. I get consistent impressions of a knot of brighter 
material very close to the tip star but more down along the following edge, 
about 15" or so down from the star. I'm also still getting little 
starlike "pops" in the nebulosity. It actually takes 360x pretty well- I don't 
lose much of the nebula and the star remains distinct.
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