I still had slight flexure between the 100ED guidescope and the RH200. It was a slow creep especially near the SCP where the sideways forces due to gravity had the greatest rate of change.
I dug out a TAL finderscope and mounted it directly to the frame around the camera. This finder has a FL of about 180mm and is held in adjustable rings on a single leg. With the Lodestar it guided very well.
Here is the first image 6MB
http://d1355990.i49.quadrahosting.co...LMC_NII_NG.jpg
As you can see this is about as good as it gets until I eliminate another lesser problem.
10 x 16 minute exposures in NII.
Cannot show you a picture yet as my XP laptop died with a power failure and my Canon 20D software will not run on Win 7.
I reckon I have just about got this system tamed!
Bert