(IAAC) Obj: M20 (Trifid Nebula) - Inst: 120mm KONUS refractor, f/8.33, equatorial

[Ante Perkovic]

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 450m)
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: 120mm KONUS refractor, f/8.33, equatorial
Magnification: 28x
Filter(s): None
Object(s): M20 (Trifid Nebula)
Category:  Emission nebula, Reflection nebula
Class:
Constellation: Sgr
Data: mag 6.3  size 29'
Position: RA 18h 02m  DEC -23° 02'
Description:
Two bright stars (N and S) in the nebula are clearly visible and are almost
the brightest in the FOV. I can see quite a faint nebulosity, 10' in 
diameter,
around S star.  It's to faint for shape to be determined. After a few 
minutes,
I was surprised to see the very very faint nebulosity, 5' in diameter, 
around
N star!
In the same FOV, 40' to the NE, is M21.