[Paul Haese]

As some may know I have not been using the OAG on the QSI since I first tried it. I had several issues that just made guiding impossible.

With the completion of Thor's helmet I decided that I would nut this OAG problem out once and for all.

The initial problem was that the stars were like seagulls which made for bad guiding. I have since resolved this problem by getting an adapter made to suit the flattener and give me the correct distance from the flattener to the sensor, which in turn has made the guide stars round and of course flattened the field. One problem licked!

Next I had a focus problem for the OAG. I purchased a spacer from QSI, however I think when I first used it I had it the wrong way around. That made for odd shaped stars in each of the corners. I now have it in the correct orientation and the stars below show that things look better.

Last night I gave the OAG another try. Guiding was certainly better but still not perfect. I have to focus the stars better in the OAG and the primary camera was not well focused. I hurried this a bit. That said though, I can report that I did get better stars than I have previously and with a slight collimation adjustment everything looks a whole lot better.