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Robert,
I am also looking at going down the same path as you are in relation to imaging.
I have looked at the qsi583 and the qhy9. Both have the same chip but the qsi has a built in filter wheel Other than that I am a little confused as to why it is almost twice the price of the qhy. Would be happy to know what the extras in the qsi are that make it more expensive and whether it is value for money? QSI583 wsg $6,500 v QHY9 plus filter wheel $4,200.
I also notice that the qhy9 cannot be used with Nebulosity. At least it is not mentioned on the website.
I image with an ED127 at f7.6 so am not positive what the best camera would be for this scope. I'm thinking that 2" filters may be better for my scope although they cost a lot more than 1.25" filters.
Sorry to hijack your thread.
Frank
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