problem

[blink138]

hello members
wondering if anybody could identify this fault and specifically if they have seen this before
it deffinately was not a bumped telescope because all subs are the same
i am also within 3' of pole in azimuth and altitude and both are guided
i usually do get nice round stars with this same setup and i have not changed anything
both pics are close to the centre of the frame but they are cropped to view
pat

[glend]

What part of the sky was this? Did you balance with more weight in one direction?

[blink138]

yes i did glen, both in the east and counterweight biased
i might re balance tonight and give it another go i suppose
i am worried about differential flexure, however i do not seem to have suffered this before
thanks glen
pat

[andyc]

Not sure of the problem, but the streaking appears to be almost exactly east-west in the second (NGC253) frame. What's the orientation of the streaks in the first one? If it's exactly along one axis, that may give a clue to the issue - tracking, backlash etc? How's the guiding graph - any jerkiness or sudden shifts?

[blink138]

ah did not think to check the phd graph andy, good thinking, i will have a look at this
pat