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(IAAC) Obj: M6 (Butterfly Cluster, Mel 178) - Inst: 120mm KONUS refractor, f/8.33, equatorial



Observation Poster: Ante Perkovic <albirejo_without_j@vip.hr>
Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: July, 17th, 2004. 23:30h
Location of site: Konjevrate, near Sibenik, Croatia (Lat 43.6 N, Elev 450m)
Site classification: Rural
Sky darkness: 6.5 <Limiting magnitude>
Seeing: 9.5 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 120mm KONUS refractor, f/8.33, equatorial
Magnification: 28x, 53x
Filter(s): None
Object(s): M6 (Butterfly Cluster, Mel 178)
Category: Open cluster
Class:
Constellation: Sco
Data: mag 4.2  size 15'
Position: RA 17h 40m  DEC -32o 13'
Description:
28x: 45 to 50 stars. The brightest one is on the E side, while others
   are quite dimmer. Two nice chains of 5 to 6 stars, one on the N and
   one on the E.
53x: 55 to 60 stars