Re: A question about a AP155 EDFS with the 2.7" focuser
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Stuart <stuart.j.heggie@...>
Dean, without a rear element in the imaging train, I think you can put the darn thing wherever you want and just bring it to focus. If you have a FF or Reducer/Flattener in play, they only deliver their promise at the precise distance to the chip. No flattener, no issue. Pretty sure. Stuart Heggie (who has an AP155EDF w FF and 155TCC)
On Sat, 20 Jun 2020 at 19:58, Dean Jacobsen <deanjacobsen@...> wrote: OK, now I am hearing from the scope's owner that the 86.5 number is the spacing for the flatener - which I do not anticipate that we will need with a 4/3" sized detector (the same size as a 8300 CCD). --
Stuart http://www.astrofoto.ca/stuartheggie/
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