(IAAC) Obj: M 81, M 82 - Inst: 120mm KONUS refractor, f/8.33, equatorial


Observation Poster: Natko Bajic <natkobajic@yahoo.com>

Observer: Natko Bajic
Your skills: Intermediate (some years)
Date/time of observation: June, 26th, 2001.
Location of site: Vinisce, near Split, Croatia (Lat 43.5, Elev 0m)
Site classification: Rural
Sky darkness: 5.0 <Limiting magnitude>
Seeing: III <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 120mm KONUS refractor, f/8.33, equatorial
Magnification: 40x, 100x
Filter(s): None
Object(s): M 81, M 82
Category: External galaxy.
Constellation: UMa
Data: mag 6.9 ; 8.4  size 21' x 10' ; 9' x 4'
Position: RA 9h:55m  DEC +69:30'
At 40x both galaxies are in the same field. M 82 is uniform, with high
surface brightness. It is elongated in about 3:1 ratio. At 100x I
could clearly see the shape I saw on photos. M 81 is much larger,
gradually brightening toward the very bright core. With averted vision
I was able to see two arms of this galaxy. The northern one seems
larger, and more diffuse. There are four brighter stars across the
galaxy. The sketch is available at the mentioned URL.
Optional related URLs: http://www.geocities.com/natkobajic
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