(IAAC) Obj: NGC6604 - Inst: 4.5" Homemade Dobson reflector, f/8

  Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: July 18th, 2004. 0:40h
Location of site: Konjevrate, near Sibenik, Croatia (Lat. 43.6 N, Elev. 
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: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 28x, 53x, 87x
Filter(s): None
Object(s): NGC6604
Category: Open cluster
Constellation: Serpens
Data: mag 6.5  size 2'
28x: Very small, quite bright cluster. I see 1' long chain od 3 stars
  with mags between 7 and 9 and one dimmer star little further,
  continuing the chain.
53x: All 4 stars clearly visible and nothing new.
87x: The same as 53x.