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Can you mount a ETX-90 OTA to a ETX-65 mount?

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4 replies to this topic

#1 Kevin R

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Posted 28 March 2024 - 04:06 PM

So yeah, someone gave me a perfectly serviceable ETX-90 OTA.  I had it on an old Orion mount, but it's not GoTo.  There is a ETX-60 on FB for $65 so I thought it might be a good swap.  Can it be done easily?



#2 jrussell

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Posted 29 March 2024 - 07:53 AM

I'm not sure about the 60, but on Weasner's ETX site I've seen where someone adapted their 90 to fit the mount for a 70.

 

It's somewhere on this page http://www.weasner.c...x/techtips.html



#3 WilsonFlyer

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Posted 29 March 2024 - 09:30 AM

Unfortunately, I don't think the mount is universal across the ETX line, although that would have been nice. Easier to shim than to stretch, unfortunately.



#4 rutherfordt

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Posted 31 March 2024 - 05:53 AM

The ETX 60 and the ETX 70 are on the same mount so if it works for one, it will work for the other.  I have no idea if its actually doable though.

 

Tom



#5 Tangomike

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Posted 27 April 2024 - 01:10 AM

HI
If I may
The GOTO mount for ETX90 is not the same as for a 70, 105 or 125. Each has a different spacing.
Used GOTO ETX mounts often have gear problems.
The gears are plastic.
So take a good look and test the mount....
I have an ETX90 RA (with a single RA tracking engine).
I wanted a GOTO, but I gave up because a lot of gotos were too damaged.


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