Alun, › Forums › Spectroscopy › More Lhires III mods › Alun, 12 May 2018 at 7:04 pm #579465 Mr Jack MartinParticipant Alun, I have checked the collimator mounting screws all good, but the double line is still present. I will adjust the collimator lens screws as tight as possible, so that it just rotates and see if that cures it. Regards, Jack Essex UK
