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reducer/corerector
Hello Matt,
Yes the reducer is TKA70581.
Some comments.
Before I bought the correcter (from AEC) is used an Orion thin off axis guider,initially with my Canon EOS 60Da and then with the QHY8L. Using an off axis guider is fiddly especially without a corrector as the edge stars are very coma effected, so the whole assembly usually has to be rotate to find a guide star. Once set up the guiding is good with the Mewlon moveable mirror.
When Joshua made the adapter for the QHY to the flattener it did not allow the off axis guider to be used,I am sure he could make one 10mm shorter with locating screws to take the guider. But I thought to keep it simple.
I bought as Saxon 700mm fl scope from Optics central, without the tripod and mount, a good price.
This scope is mounted in a home made wooden saddle with the correct radius cut outs for the two scopes. All in 12 mm marine ply, the two plates are joined by two 40 mm wide plywood boards which are a good tight fit in rectangular holes in the plates. My wife is into woodwork and has a magnificently accurate CNC router. The whole lot is
inelegantly attached to the Mewlon with miles of gaffer tape.
10 minute exposures give "round" stars but not as good as the OAG.
I use a plate solved model for the mount an scope so rotating the camera to use an OAG is not on.If I did use an OAG and still needed to rotate it with the corrector I would have to rebuild the model for each target. Not a big deal, say 30 minutes. So I will put that off until I need longer exposures than ten minutes.
Cheers
Chris
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