(IAAC) Obj: NGC6284 - Inst: 4.5" Homemade Dobson reflector, f/8

  Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: August 11th 2003, 22.16h
Location of site: Tugare, near Split, Croatia (Lat 43.4 N, Elev 250m)
Site classification: Rural
Sky darkness: 5.0 <Limiting magnitude>
Moon presence: None - moon not in sky
Instrument: 4.5" Homemade Dobson reflector, f/8 ("babydob")
Magnification: 25x, 48x, 79x
Filter(s): None
Object(s): NGC6284
Category: Globular cluster
Constellation: Oph
Data: mag 9.0  size 2.7'
  25x:  Not visible. Two nearby stars with mags 8.9 and 9.4 were barely 
visible, so LM in the eyepiece must have been very low.
  48x: I think I saw it for a moment, but lost it very soon. Later, I 
couldn't find it even with averted vision.
  79x: Very faint nebulosity 1'30" in diameter. After some time, I 
couldn't see it directly anymore, but with averted vision, it was 
visible as very faint fuzzy, 1'45" in diameter.
The cluster was 18 deg above the horizon.