Hi Ken
I didnt read the reference, but isnt the thread count on Celestrons 40tpi?
If so, it may make a difference since Meade evidently uses a standard
27tpi 1/4 thread.
---------
Phil Chambers [ptchamb-at-
On Fri, 8 Feb 2008, Ken Hutchinson wrote:
> --- In sct-user@yahoogroup
>>
>> I'm assuming that the LX200(GPS/R) is f/10 when the back is loaded with
>> the standard equipment (stock microfocuser, diagonal, and eyepiece).
>>
>> IF THIS IS SO, then how many inches (or fraction) can the mirror move
>> forward (28 threads per inch) for every increase in f/?
>>
>> For example, I have to move my mirror forward an additional 11 focus
>> turns (11/28") to focus my .6x focal reducer. What is the effective f/
>> with this mirror movement? OR, to put it more simply, an effective f/
>> of 11 is a forward movement of the mirror of how much?
>>
>> Inquiring mind wants to know.
>>
>>
>
> This report:
>
> http://tinyurl.
>
> has the data you need. Unfortunately it is buried in the tables near
> the end, not nicely charted and it covers only Celestron SCTs. But it
> will give you an idea what your Meade will do.
>
> Ken
>
>
>
>
> Visit the sct-user home page at:
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