Tonight I tried the rarely used C11 for planetary imaging. The problem with an 11" f/10 is not enough focal length at prime focus, or too much as in this case with a mere 2x Barlow. Recommended minimum viewing distance from your display is three feet. http://www.pbase.com/polakis/image/143251060 Tom -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.