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(IAAC) Obj: M11 (NGC 6705) Wild Duck - Inst: 8" f/10 SCT fork mount
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Observer: Jim Williams
Your skills: Advanced (many years)
Date/time of observation: 6-25-00 08:57 UT
Location of site: Stockton, Ca (Lat 38^0 N, Elev 20')
Site classification: Suburban
Sky darkness: 6.0 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 8" f/10 SCT fork mount
Magnification: 50X
Filter(s): None
Object(s): M11 (NGC 6705) Wild Duck
Category: Open cluster.
Class:
Constellation: Sct
Data: mag 5.8 size 14' (Tirion)
Position: RA 18:51.1 DEC -06:16
Description:
At 50X, this cluster is about 11' in diameter and quite compact.
There is one 7th mag. star inbeded in the center and a close pair
of 8th mag stars on the southern edge. M11 has a dark region,
almost like a bay, on the western edge that penetrates well into
the interior. This void of stars gives the cluster a boom-a-rang
or "Ducks in Flight" appearence. There is a well defined boundary
all around except for the "void" area. Just to the north of the
central 7 mag. star, I see a dark line (another lesser void) that
runs almost E-W. penetrating in from the westren side. It almost
extends through the cluster. This void is perhaps only 0.5' in dia.
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