8" Orion DSE

Object: PK 153+22.1 / Abell 16
Obs. place: Pornainen, Finland
Date: 15./16.9.2009
Bortle class: Class 2
NE Lim.mag: 6.9m (north)
Background sky: 1-2
Seeing: 2
Transparency: 2
Weather: +7°C, clear skies...

Minimum aperture: 8"

Description: Very faint and extremely difficult. Round, ghostly glow N from a 11th magnitude star. Even brightness. Only seen with the filter.
Abell 16 with 8" Orion DSE + UHC filter