Field flattener question

Forums Telescopes Field flattener question

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    Telescope: WO 110 Megrez ED f/5.95
    Imager: ZWO ASI533MC Pro, 1″ square

    Given the above telescope and image, I’m looking for advice on what the ideal field flattener would be to get.


    David Arditti

    Allow me to formally welcome to the Association again 😀

    I see this question exactly was asked on Cloudy nights forum in 2009. No-one seemed to have a good answer.

    I’ve tried flatteners on telescopes they were not designed for, and they always improve the results over a non-flatted setup, though not necessarily as much as should be possible when using exactly the right thing for the job.

    It might be best to find one or other of the lenses suggested in that thread second-hand and just try it out. It might not be fantastic but might be good enough to be getting on with without large expenditure.

    Others may have other suggestions.

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