I have tried to take some prime focus shots of the moon tonight with my D70 and 8"GSO Dob.... the dob (or is it Dob..
) has a 2" focuser...
I have a T-adaptor and tube from Andrews.
initially I thought the T-tube was too long, as the camera seemed to be heading toward focus as I racked in the focuser, but couldn't get close enough.... then I worked out the T-tube is two tubes in one, so I used the short one, which brings the camera in much closer.... still could not get it near focus....
Am I missing something really fundamental here???? The moon with Venus hovering alongside was such a nice sight too...
