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Replacement focuser for older SV102ED

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#1 gryromans

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Posted 06 December 2023 - 05:37 PM

I would like to add an EAF to my SV102ED but the stock focuser isn’t configured for one. I’ve been looking for a replacement focuser that will fit. So far only found a feather touch but very pricy. Any suggestions or experience with this?

#2 radial195

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Posted 06 December 2023 - 05:42 PM

Call and talk to Stellarvue.


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#3 gryromans

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Posted 06 December 2023 - 07:14 PM

I did talk to Vic. They no longer are offering focusers. His only suggestion was the feather touch option.

#4 tjay

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Posted 06 December 2023 - 07:27 PM

You might want to look here: https://www.ebay.com...ar=444600863290



#5 ris242

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Posted 06 December 2023 - 07:46 PM

so there's a internal thread in the tube and you know what it measures?

 

generally you could look at a site like TS and virtually piece together the fittings you need to adapt what you have to a new say.......rack and pinion.

 

 

What I couldn't say for certain is how this would affect the back focus distance - is your focus point close to the scope or racked out quite a way?



#6 gryromans

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Posted 06 December 2023 - 08:18 PM

Tjay - Thanks for the link. Will check it out.

Ris242 - the back flange of the OTA has 88.5mm female threads. Looking for a focuser with matching male threads or something close I could use adapters with. Hard to find the specs on most focusers or the use a flange coupling.

#7 Jon Isaacs

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Posted 06 December 2023 - 10:45 PM

I would like to add an EAF to my SV102ED but the stock focuser isn’t configured for one. I’ve been looking for a replacement focuser that will fit. So far only found a feather touch but very pricy. Any suggestions or experience with this?

 

One option:

 

The 102mm F/7 SV0102ED was essentially identical to the original AT-102ED, same optics, some slight differences.  You can buy a new AT-102ED for $584, it has a 2 inch rack and pinion focuser that maybe configured to add the EAF.  You could sell the SV-102ED and have a very nice focuser that did not cost a great deal.  

 

Jon



#8 gryromans

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Posted 07 December 2023 - 10:14 AM

Thanks Jon. I also have been thinking of just upgrading the scope. I really like the images this scope provides so guess it was a last option for me. I see you use a AT scope. Do you like it?



#9 Jon Isaacs

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Posted 10 December 2023 - 04:37 AM

Thanks Jon. I also have been thinking of just upgrading the scope. I really like the images this scope provides so guess it was a last option for me. I see you use a AT scope. Do you like it?

 

I do like my AT-80LE.  It's a unique scope in that it's an 80 mm F/6 FPL-53 doublet.  Typically 80 mm F/6s are triplets and 80 mm FPL-53 doublets are F/7 but the 80 mm F/6 provides a very wide field, 5.5° with the 41 mm Panoptic. 

 

Jon




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