From: "Camron Hastings" Subject: RE: 3.5m Night Log 981125 Date: Thu, 26 Nov 1998 14:09:23 -0700 The boresite seems to be changing every time the instrument has had been fiddled with. Two nights ago I used the same method as Russet did last night and found the boresite at X=210, Y=96. I suggest that for anyone using horizon rotations make this test a standard procedure at the beginning of their run. N.C.Hastings