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(IAAC) Obj: M81, M82 - Inst: 15x70 binoculars
Observer: Rick Margolies
Your skills: Intermediate (some years)
Date/time of observation: 16 Feb 04, 7pm Local
Location of site: Center Ossipee NH USA (Lat 44oN, Elev )
Site classification: Rural
Sky darkness: 6.5? <Limiting magnitude>
Transparency: Clear (8/10)
Seeing: Unknown
Moon presence: None - moon not in sky
Instrument: 15x70 Binoculars on Manfrotto 3030 photo-tripod
Magnification: 15x
Filter(s): none
Object(s): M81, M82
Category: External galaxy.
Class: SA(s)ab I-II, I0spP
Constellation: UMa
Data: mag 6.9, 8.4; size 27x14, 11x4
Position: 0955 +6904
Description:
In Ossippee, 35 minutes from North Conway. Right on the frozen
lake, so you hiked out 100 yds onto the lake and had almost
perfect horizons with some foothills and trees to the west.
--
I didn't calculate my limiting magnitude but I'm sure it was
easily 6+, and the CSC light pollution map categorizes the
area as 3 on the Bortle Scale (at least mag 6.5). Mid 20's
Fahrenheit, slight breeze.
--
M81 and M82:
Always a favorite pair. This was my best bino view ever of this
pair. The 15x easily showed the diffenent orientaions, with M81
a north-south oval core with a diffuse halo, and M82 a shorter,
east-west spindle.
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