Karel Teuwen - M57 (NGC 6720)

M57 (NGC 6720) (Ring Nebula)

in Lyra

Instrument:	40cm Hypergraph@f8 mounted on a Paramount ME
Detector:	SBig STL11000
Filters:	standard Sbig & Astronomic H-Alpha 6nm
Exposures:	H-Alpha : 11 hours (1x1bin) and LRGB 127:70:70:80 min (1x1bin)
Location:	Turnhout and Mol(Belgium)
Date:	05-6 and 06-6-2006
Comments:	Collaboration with Josch Hambsch who provided the H-Alpha Images.