(IAAC) OBJECT: NGC6633 (OC) INST: 9.25"SCT f/10 Rating: B-

Observer:  Todd Gross
Your skill:  Intermediate - Many years
Date and UT of observation: 3/09/99 09:15 GMT
Location & latitude: 22 mi. West of Boston, Ma. 42.3N
Site classification: Suburban
Limiting magnitude (visual): approx. 4.7 zenith 
Seeing (1 to 10 - worst-best): about 3
Moon up (phase?): Yes, last 1/4 (just over)
Weather: Crystal Clear
Instrument: C9.25" SCT f/10 f.l.2350
Magnifications: 123 & 87x
Filters used: none
Object: NGC6633
Constellations: Ophiuchus 
Object data: Open cluster
Size(s): 27'
Position: 18:28 +6:34
Magnitude: 4.6  
Personal "rating" (at this aperture, and sky condition): B/B-
Large, loose cluster, fairly bright stars, mostly of the 
same magnitude, randomly distributed. Pretty, but required 
even lower power for a better view. 
Boston Meteorologist Todd Gross
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