I have owned an LX200GPS 10" f/10 since 2002 and spent a lot of happy nights with it. My main fields of interest are time series of variable stars which means imaging the same target from the evening dusk to the morning dawn. Now I am seriously thinking to upgrade my old glorious scope with an LX600 12" f/8 of which I have read good reviews both optically and mechanically. Metal gears, precise focus even without mirror lock, superior optics complete the view.
Reading the Meade specs about high precision tracking, Meade says: "Down to 1 arcsecond - depending on sky conditions". I suppose Starlock is the key feature which assures this astounding precision. Considering my SBIG ST9 with its 1.6 arcsec per pixel, it means I could easily take round stars even if sky conditions weren't at the best. What is the opinion of experienced users in this forum about tracking precision considering I seldom expose each image longer than 5 minutes?
Furthermore, where I can find drawings with the main dimensions of the scope on the X-wedge. I have to upgrade the scope shed too and I need to know the distance between the base of wedge and the highest point of the Starlock in its default park position considering my latitude of about 44°.