Hi Paul I am lucky to have very dark skies to the north so I like to take advantage of this by having a half wall that is hinged to drop down, also have a split in two sliding roof that can slide east or west, might give you some ideas. Michael I think these large sensor cameras really test most off the shelf scopes, a large fully illuminated flat field at a affordable price is the holly grail. Even taking flat frames seem to be of limited benefit when you start really stretching the data if you have bad vignetting. Thanks for the encouragement Alan and Iceman.
Clear skies Ken.
