Thanks Paul,
It looks similar to what you had with your GSO if im not mistaken
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Ive pretty much rulled out cameras and accesories and i think its the scope. I have not used a reducer or any additional glass in the optical train.
The image in my first post was taken with a canon 550D
The image i have attached to this post is sirius again, a full frame 2 sec. exposure. the optical path is optec tcf-s focuser screwed onto the back of the OTA and an stl 11000 mono camera. the image was taken through a clear filter.
thanks
Josh