(IAAC) Obj: Stephenson 1 - Inst: Refractor, 120 mm, f/8.3, azimutal mount

[anonymous at s15272250.onlinehome-server.com]

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Observation Poster: Alexandru Burda <alexandru.burda at gmail.com>

Observer: Alexandru Burda
Your skills: Intermediate (some years)
Date/time of observation: 2009.09.12, 23:04 UT
Location of site: Bucharest, Romania (Lat 44 26 33N, Elev )
Site classification: Urban
Sky darkness: 3 <Limiting magnitude>
Seeing: IV <I-V Seeing Scale (I best)>
Moon presence: Major - gibbous or near object
Instrument: Refractor, 120 mm, f/8.3, azimutal mount
Magnification: x40, x80
Filter(s): none
Object(s): Stephenson 1
Category: Open cluster.
Class: poor
Constellation: Lyra
Data: mag   size 
Position: RA 18:53  DEC 36:55
Description:
Open cluster in the constellation Lyra positioned in the same area with the double 
star delta Lyr. Tenuous cluster with irregular aspect (almost triangular). Three 
medium brightness stars (compared with the brightness of all the stars visible in 
the cluster) form a distinct triangle in the center of the cluster (apparently in 
between the two components of the double star). I was able to count with ease 
about 15 stars. Classifications: Shapley d, Trumpler IV-2-P

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