Hi i use a skyris 236m , im only just starting guiding with phd2 but have managed to sort of do it but not tried it with my oag yet..what it could be is because the prism picks off a small portion of light you might not be able to find a decent guidestar,ive been told by someone who used a qhy5-ii that he had to rotate it in the housing to find a guidestar..he then upgraded to a lodestar and now doesn't need to rotate... i am finding the exposure setting difficult to get a high enough snr on the guidestar but thats another test for the next available clear night,in your daylight test did you manage to get focus in both cameras?9 sorry,just reread what you wrote!) Quick question you could maybe answer for me is when you enter the focal length of the guidescope obviously there isnt one so what did you do? is there a separate part for oag's?