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

Started by inoxtrim , Feb 23 2021 06:58 PM

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3 replies to this topic

#1 inoxtrim

Explorer 1

topic starter

Posts: 50
Joined: 21 Aug 2018
Loc: Canary Islands - La Palma - Gran Tcan Home

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

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#2 daveco2

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Posts: 106
Joined: 29 Aug 2016
Loc: Torrance, CA

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.

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#3 Bob Koch

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Posts: 14
Joined: 05 Oct 2013
Loc: Broken Arrow, OK

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