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Tightening focuser on AT80ED

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#1 Olivier Biot

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Posted 10 March 2007 - 10:59 AM

Hi folks,

It looks like the 40mm Paragon and a 2" diagonal are a bit too much for the default friction provided by the Crayford focuser in my AT80ED. I'd like to tighten up the focuser in order to remove the occasional slipping. The 2-page description sheet of the AT80ED on Astro-Tech's website doesn't specify this manipulation.

When I put the OTA upside down, I see a number of recessed bolts, some anodized, some not (see attached photo).

What's the procedure to follow?

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  • 1473212-AT80ED_bottom.jpg


#2 pollux

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Posted 10 March 2007 - 11:52 AM

I tweaked a SW Equniox before and the focuser is exactly the same as your scope's

You need to first try the one in the middle (the biggest hole). There's a screw (you need allen key) to control the tension

#3 Olivier Biot

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Posted 10 March 2007 - 12:13 PM

Hi Pollux,

Many thanks for your reply! I slightly tightened the nut in the central recessed hole in the elliptical flat base. Now there's no more slack!

:yay:

Cheers,

Olivier

#4 spaceydee

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Posted 10 March 2007 - 01:05 PM

Yeah!! :)


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