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QHY 168C and coma correctors QHYCCD QHY168C · Alan Hancox · ... · 3 · 136 · 0

astropilch 1.20
Alan Hancox
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Hello

I`m thinking of purchasing a Skywatcher 250 Quattro but i`m not sure how i`d connect my QHY 168C to a coma corrector. Can anyone push me in the right direction of adaptors i`d possibly need? I`m currently using an 8" RC @ f8 but i`m tempted to try a fast newtionian….

Thanks for reading
Alan
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andreatax 9.89
andrea tasselli
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It should have been furnished with a M54/T-Thread adapter with which you would normally attach most CC. Does it have one?
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astropilch 1.20
Alan Hancox
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Yes i have it. Would it give me the 55 mm backfocus though?
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andreatax 9.89
andrea tasselli
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Alan Hancox:
Yes i have it. Would it give me the 55 mm backfocus though?

No, it won't. The M54 to sensor distance is 18mm plus the T-Thread adapter thickness. The difference you'll need to make up for using spacer rings.
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