10pm opened with Jonathan in order to collimate the ODK.I think we achieved a positive result and learnt a lot in the process.There is more work to be done but we have a better idea on how to do it.Jonathan checked the result of our intervention on M13 which showed slight distortion of stars at the periphery still.We used the opportunity to try off axis guiding with an Advanced off axis guiding system which I abandoned years ago and failed again to make it work this time.Before we left I had a shot of Jupiter with a ZWO camera.Peter was working in the meantime on the Meade.He left about 2.00 am shortly followed by us overtaken by tiredness,the moon and cloud.
Rhys