(IAAC) Obj: NGC6517 (NOT SEEN) - Inst: 4.5" Homemade Dobson reflector, f/8

  Observer: Ante Perkovic
Your skills: Intermediate (some years)
Date/time of observation: August 11th 2003, 23.48h
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): NGC6517
Category: Globular cluster
Constellation: Oph
Data: mag 10.3  size 1.0'
  25x: Not visible. According to stars visible in the eyepiece, LM in 
the eyepiece was 10.0.
  48x: Nothing, not even after 10 minutes of careful scanning. Later, i 
came back and maybe saw it just for a moment, but I'm not sure.
  79x: Not visible.
The cluster was 30 deg above the horizon.