(IAAC) Obj: M20 (NGC 6514) - Inst: 12.5" f/6.5 Cave equatorial Newtonian


Observer: Dave Mitsky
Your skills: Intermediate (some years)
Date/time of observation: 6/18/98 01:20 UT
Location of site: ASH Naylor Observatory (Lat 40.1d N, 76.9d W, Elev 570')
Site classification: Exurban
Sky darkness: ~5.0 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 12.5" f/6.5 Cave equatorial Newtonian
Magnification: 121x
Filter(s): O-III
Object(s): M20 (NGC 6514)
Category: Emission nebula.
Constellation: Sagittarius
Data: mag 6.3  size 29'x27'
Position: RA 18:02.3  DEC -23d:02'
A bit more than a degree to the north of M8 lies the emission/reflection nebula
M20, also known as the Trifid Nebula.  NGC 6514 is also the designation of the 
associated large "cruciform" open cluster that consists of some 60 stars.  The 
multiple star HN 40 lies at M20's center.  The Lagoon Nebula is about 30 light 
years in size and is some 2300 light years away.  
M20's nebulosity is actually a rather dim 9th or so magnitude. Even with an
O-III filter I could barely see its emission component.
Optional related URLs: http://www.msd.org/obs.htm
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