|
With a mount like the titan, I would definitely piggyback the ED80 on top of the 12" and save yourself money and hassle.. Find a way of hard bolting the ED80 on to the 12" with as few moving parts as possible.. I've seen LX200 mounts carrying 12" SCT's and ED80's piggybacked, if the LX200 can do it, the titan could do it in a blizzard..
I found when using a side by side bar with my C11 and ST80 that it was sometimes very difficult to get balance right, and even when you did get it right, there was always an element of movement in something somewhere that caused continuous frustration.. Eventually I gave up on that and went to a piggyback arrangement with a smaller refractor and my results improved... Overall though, if you intend to image through the 12", I would strongly recommend an off axis guider and a VERY sensitive guide camera... That is the best way to achieve good photographic results at long focal lengths, especially in scopes with moving mirrors..
Good luck.
Alex.
|