(IAAC) Obj: M57 - Inst: XT8 Dobsonian F/6 1200MM 8 Inch

anonymous at sedna.atmob.org anonymous at sedna.atmob.org
Mon Sep 19 07:27:09 EDT 2005


Observation Poster: Warren McMurry <wnppmy at yahoo.com>

Observer: Warren McMurry
Your skills: Intermediate (some years)
Date/time of observation: 09/18/04 9PM CSDT
Location of site: Rock Falls  Illinois (Lat 41.8, Elev 89.7)
Site classification: Suburban
Sky darkness: 3.5 <1-10 Scale (10 best)>
Seeing:  <1-10 Seeing Scale (10 best)>
Moon presence: Severe - full or very near object
Instrument: XT8 Dobsonian F/6 1200MM 8 Inch
Magnification: 60X 120X
Filter(s): None
Object(s): M57
Category: Planetary nebula.
Constellation: Lyra
Data: mag   size 
Position: RA :  DEC :
This was intown viewing between street-lights but slightly shielded with
trees. Moon was just coming up about a day after full moon, again some tree
protection, also some cloud haze. At times the two stars off Vega that nicely
show the location of M57 were difficult to see. Anxious to use the newly 
aquired XT8, M57 popped into view at 60X and nice size at 120X, abit brighter
than normally use to seeing w/my smaller scopes, still needed averted vision
to grasp the ring effect. May have a flecture problem w/mirror, as still 
factory set pressure on mirror, star images slightly off, but could see the
nearby Cygnus Double well at 60X. As Mars getting bigger did view the south
polar cap with light blue filter at 250X (4AM). Skys are getting exciting.<>.
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