This portable mount has been around for awhile now but you may still be interested in this review I've posted on my site:
http://philhart.com/content/star-adventurer-review
Attached one of several quick examples I captured - Orion with Canon 6D (not modified) and 200mm lens, 80 * 30 secs (40 mins), f4, ISO1600.
I'm interested in performance observations from anybody else who has one too..
Phil