(IAAC) Obj: M22 - Inst: 29" f/4.5 fork mount newtonian
Observer: Bob Pinckney, Jr.
Your skills: Intermediate (some years)
Date/time of observation: 16 June 1998, Midnight
Location of site: Penn Yan, N. Y. (Lat 42.5N, Elev 700ft)
Site classification: Rural
Sky darkness: dark <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 29" f/4.5 fork mount newtonian
Magnification: twin 32mm brandons w
Filter(s): zeiss bino & astrop. barlow = 2.4x mag. or approx. 250x
Category: Globular cluster.
Data: mag size
Position: RA : DEC :
The cluster appeared three dimensional across the entire visible structure.
M22 filled most of the field using the twin brandon 32's. This particular glob
is loose enough to allow star separation even at the core. The view was
indescribably delicious. Loose structure showed great depth of field from the
center to the hazy gray points of light at the edges. M22 appears more three
dimensional than other globs. Perhaps because the core is not as tight? I
used the lens cell only from the Astrophysics barlow threaded on to a 2"
adapter attached to the Zeiss binocular viewer. There is simply no finer way
to observe globulars. No photograph ever taken can compare.
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