(IAAC) Obj: NGC 7243 - Inst: 120mm f/8.3 refractor
anonymous at sedna.atmob.org
anonymous at sedna.atmob.org
Fri Aug 27 17:52:43 EDT 2004
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Observation Poster: Diego González <digonzalz at hotmail.com>
Observer: Diego González
Your skills: Intermediate (some years)
Date/time of observation: 1/11/2003 22:40 UT
Location of site: Asaturias, Spain (Lat 43º 26'N, Elev 250m)
Site classification: Rural
Sky darkness: 5.0 <Limiting magnitude>
Seeing: 5 <10-1 Seeing Scale (1 best)>
Moon presence: None - moon not in sky
Instrument: 120mm f/8.3 refractor
Magnification: 31x, 50x, 80x, 100x
Filter(s):
Object(s): NGC 7243
Category: Open cluster.
Class:
Constellation: Lac
Data: mag 6.4 size 20'
Position: RA 22:15 DEC +49:53
Description:
This cluster is located 1.5º west from 4 Lac in a very rich star field. A 32mm
eyepiece (31x) shows it as a triangular shaped object and some 20' in size.
Contains between 50 and 60 white or bluish stars. The brightest go from
magnitude 9 to 10. At 100x the cluster completely fills the field.
In the center of the cluster I can see a small triangle of 9th and 10th magn.
stars: one of them is the double Struve 2890, easy to split even at low
powers. They are separated 9.4" and have magnitudes of 9.3 and 9.7. Both are
white.
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