Hi everyone, I see. I'll try about making it "heavy" so to force the drive. I had a correct two-star alignment for the telescope and it was finding objects relatively well. The controller is set to sidereal rate and I am using the on-board site directory to set my location (which should be OK). I don't have the full sized image with me any more (deleted it), but all the stars in the field showed exactly the same trail. So, another question, for a well-balanced, well-aligned, and well-weight-balanced electronic Celestron VX equatorial mount, what exposure time would you expect BEFORE trailing s