Alun and Robin,
Thank you for your advices.
I have not had a clear night to re test !
I don’t think that cross treading is an issue, the tension on the belt is not much at all, so far not a problem. BUT you never know, when I had the collimator lens housing out, I could see no evidence of cross threading.
Robin 2 questions;
1. I removed one fibre washer in the collimating lens housing – as you stated in a previous post – but the lens was loose in the housing, I put the fibre washer back. So, how did you overcome the loose fitting of the lens inside the housing without replacing the fibre washer ? Perhaps your Lhires is different to mine ?
2. I do not recall seeing this double calibration line until I motorised the Lhires !
So, if the double line is real, can it be used as a valid calibration line ?
I will be at the AAVSO meeting.