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Meade focal reducer 6/3 "made in china", backfocus?¿

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#1 inoxtrim

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Posted 23 February 2021 - 06:58 PM

Hello everyone,

I have bought a "Meade 6/3" focal reducer "made in China" long time a go,

but I don't know what it is the backfocus , Could someone help me?

I attached some pictures of my focal reducer, Thanks !!!!

 

https://postimg.cc/gallery/SRFpDP2



#2 daveco2

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Posted 23 February 2021 - 07:24 PM

The only reliable way to get backfocus would be to measure it.  Put it on your scope, point it at a bright moon, and find focus by looking at the image on a card as you move it back and forth.



#3 Bob Koch

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Posted 23 February 2021 - 07:35 PM

There was an article in Sky and Telescope back in the day that stated the Meade and Celestron .63 reducers were designed to be used with a 105mm spacing measured from the back edge of the reducer to the focal plane. Hope this helps.

 

  Bob


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#4 bignerdguy

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Posted Yesterday, 09:31 AM

See this thread:

 

https://www.cloudyni...-focal-reducer/


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