|
Cutting my OTA
I have an 8" f/5 Skywatcher Newtonian. Obviously with a T-adaptor I cannot get focused. Removing the T-adaptor and connecting the T-Ring dirctly to the focuser, which the Skywatcher can do allows me to focus. However I cannot use any filters doing this as there is no T-Adaptor in the train.
I'm going to have to cut the tube, the question is by how much for a DSLR?
I've looked around IIS forums and have come up with anything from 25mm to 55mm, also if I cut the tube by say 35mm do I just need a 35mm extender to do normal observations with my eyepieces?
Also thinking about getting the F5 Coma Corrector, so not sure how this is all going to affect how I cut my tube.
Any advice?
Many thanks
|