Deepsky - Pieter Vandevelde

M57 The Ring Nebula in Lyra

Scope: 10" f/3.8 Newtonian
Mount: em200
Guiding: Lodestar + oag9 with phd guiding
Camera: sbig st8300 @ -20°C
Filters: Baader 7nm h-alpha
Exposure: 6 hrs (18 x 1200s)
Resolution: 1.17 arcsec/pixel

Date: April 7th & May 4th 2013
Poor transparancy