[stanlite (Grady)]

I have been imaging for a little while now and i have noticed that although i can guide (through a guide scop) with no problems for hours my images slowly drift in one direction over time (not sure but say around an two or three arc mintues over 2 hours). My question is ... how can phd say everything is sweet according to my guidescope but on my imaging scope i get this drift??? Guide scope 102mm refrac. Primary scope 8" newt on a NEQ6 pro. I haven't done PEC training yet. Nor have i set backlash could it be these that are my problem ??? could it be flex? although given that the drift is in one direction and at a steady rate i wouldn't think so. Your thoughts would be welcome.

Grady

P.S. both scopes are F5's