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Something I forgot to say when we talked about it last night. I cant comment on other cameras but a filter such as the ZWO IR cut filter is more or less essential with the ASI294. I chased reflections for weeks before I fitted one. The ZWO IR cut is more or less a Lum filter, it is UV-IR cut not just IR with a passband between about 400 and 700nm.
I suggested the other way with an OAG like the Orion thin I had, despite some rigidity issues with that particular OAG, If you actually have to go out and buy the guidescope to put on there is probably not a lot of money in it either way. They take a little more setting up in the beginning but then they just work!
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