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Tony Bell

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    William Optics FLT 91 - imaging

    in Discussions - Scopes / Whole setups

    Posted

    On 31/07/2021 at 18:01, AstroDoc1 said:

    I just received this scope and flattener.

    is 3.45mm definitely the correct flattener gap space for a 55mm back focus with the ZWOasi2600mm camera?

    I thought I read somewhere it should be 5.4mm. I need confirmation.

    thanks,

    brian

    Hi Brian did you find the answer to the adjustment on the Flattener ? 3.45mm or 5.4mm ?  Just got my FLT91 and flattener and want to fit ZWO EFW and ASI 1600 mm Pro Mono.  

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