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Hi Ryan,
Thanks for explaining it to me. I guess I didn't explain enough of what type of astrophotography I was planning on. I recently purchased a Skywatcher 10" f4.7 Newt with an AZ EQ6 Pro mount to use. I have the T-ring and adaptor but currently trying to get the guide scope and as you know everyone is short on supplies. I was looking at an Orion 50mm with helical focuser and a ZWO 120MC but still can't get my hands on one. Trying to keep it small as I already have heaps of weight on the mount. Soon I will commence building an observatory with a pier which should help somewhat on stabilizing. I believe I will also require a coma corrector which should give me exactly 55mm for the DSLR focusing. Are all coma corrector's the same thickness or is there a particular one I should use?
Cheers
Rod
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