8" Orion DSE

Object: Abell 2
Obs. place: Pornainen, Finland
Date: 1./2.10.2010
NE Lim.mag
: ~6.8 (zenith - HD 172922)
SQM-L reading
: 20.91 (zenith)
Background sky
: 6 (good)
Seeing: 6 (good)
Transparency
: 6 (good)
Weather: +4.0 - +1.0C, humidity ~81%, 1030HPa.

Description: Very faint, round glow of even brightness. 15th magnitude star touching the halo SW. Size ~30"
Abell 2 with 8" Orion DSE @ 267x + O-III filter