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Lx90 12" electronic focuser ?

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#1 Tim.D

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Posted 01 November 2019 - 03:26 PM

Bought a LX90 12" and when I contacted Meade about an electronic focuser they said they do not make any for it.  So is there an aftermarket type to be had?



#2 junomike

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Posted 01 November 2019 - 05:28 PM

They can be found used in the classifieds.



#3 carolinaskies

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Posted 03 November 2019 - 04:33 PM

You can put the Meade Zero-shift on it... the caveat is you will have to buy/make either a hand controller (like the JMI hand controller) or buy/make a computer controlled version as Meade nor JMI no longer sell a hand control. 

Or you can buy one of the other electric focuser options for SCTs on the market.  The LX90 does not have a focuser port on the base like an LX200/LX600 model which is why you were told the LX90 can't use one.  Silly phone operators likely have never used any telescope let alone an LX90 or nicer fork mount. 



#4 OzAndrewJ

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Posted 03 November 2019 - 05:11 PM

Gday Tim

Another option is if you can find an old "APM-909" module, you can plug it into the Aux port

and get ST4, Focus and Reticle functionality that can be driven via the handbox

 

Andrew Johansen Melbourne Australia



#5 carolinaskies

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Posted 03 November 2019 - 07:24 PM

Another option is the Rigel Systems electronic kit for the GSO Crayford focusers including the SCT model.  



#6 rigelsys

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Posted 03 November 2019 - 08:11 PM

You can put the Meade Zero-shift on it... the caveat is you will have to buy/make either a hand controller (like the JMI hand controller) or buy/make a computer controlled version as Meade nor JMI no longer sell a hand control. 

Or you can buy one of the other electric focuser options for SCTs on the market.  The LX90 does not have a focuser port on the base like an LX200/LX600 model which is why you were told the LX90 can't use one.  Silly phone operators likely have never used any telescope let alone an LX90 or nicer fork mount. 

nFOCUS controller can run the MEADE zero shift -- it is a DC motor.



#7 Tim.D

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Posted 04 November 2019 - 09:36 PM

Thanks , this is what I was hoping for. Figured the Long time Astro people would know.



#8 RedLionNJ

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Posted 09 November 2019 - 01:13 PM

When going for an electric, after-market focuser, go for the Crayford-style which does not move the primary mirror. That way you get zero mirror-shift and fine focus is so much easier to attain.

 

I know JMI used to make one (NGF-S) but I'm sure there are other brands. It just makes focusing (esp at high magnifications/resolution) so much easier.



#9 spames

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Posted 09 November 2019 - 01:17 PM

Bought a LX90 12" and when I contacted Meade about an electronic focuser they said they do not make any for it.  So is there an aftermarket type to be had?

https://www.cloudyni...-ngfcm-focuser/




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