(IAAC) Obj: m101 - Inst: 10" F/5.6 Dob

[anonymous at sedna.atmob.org]

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Observation Poster: Brian Carter <nairbretrac at hotmail.com>

Observer: Brian Carter
Your skills: Intermediate (some years)
Date/time of observation: 9/10/05
Location of site: Charlie Elliot, near Atlanta GA (Lat , Elev )
Site classification: Exurban
Sky darkness: 5.5 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 10" F/5.6 Dob
Magnification: 53x, 100x, 135x, 200x and Barlow
Filter(s): 
Object(s): m101
Category: External galaxy.
Class: Sc
Constellation: UMA
Data: mag 7.7  size 26.9
Position: RA 14:03.2  DEC 54:21
Description:
Sc Galaxy in Ursa Major - Mag 7.9 -  RA 14 : 03.2 D +54 : 21  The 27mm 
panoptic at 52x it is almost perfect round haze, VERY low surface brightness 
and contrast, but does get brighter towards the center, hints at a couple dark 
lanes to the east and west.  At 100x with the 14mm pentax the dust lanes are 
more obvious, spiral all the way into the core.  Faint star near the core, 
thick knotty arms.  Remind me of a star fish's knotty appearance and thick 
arms. 

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