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Askar 32mm Guide Scope Problem

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#1 SouthWestAstro

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Posted 03 March 2024 - 01:23 PM

I just got an Askar 32mm guide scope. I cannot get the helical focuser to work. The way it's supposed to work is shown in this video:

 

https://www.youtube....h?v=cbDIU7yGm68

 

While I can rotate the OTA with respect to the rear part, the two front parts of the OTA seem to be stuck in place.

 

I may end up having to return it but I'd like to get it working for use this coming week.

 

Does anyone have experience with this guide scope ?

 

 



#2 PIEJr

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Posted 03 March 2024 - 02:02 PM

No, don't have one.

Are there any stop screws you might have missed?

(Iask, because both of my helical focuser guide scopes have a set thumb screw to hold the adjustment once done. (Orion 50mm and newer Svbony 60mm)

 

Call the vendor and ask them. Probably just something you are overlooking. Good Luck! Hope you don't have to return it.


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#3 starblue

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Posted 03 March 2024 - 02:09 PM

...

While I can rotate the OTA with respect to the rear part, the two front parts of the OTA seem to be stuck in place.

...

I don't understand. One focuses by turning the knurled ring. On mine it's buttery smooth throughout its range. I have no problems focusing my ASI174MM guide camera with it. The issue I have with it is that there's no locking ring to keep it at the focus point, unlike a lot of finder scopes. The front smooth half of it looks like it should be a locking ring but it's not. I emailed the vendor and they verified there's no lock.


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#4 PIEJr

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Posted 03 March 2024 - 02:15 PM

I don't understand. One focuses by turning the knurled ring. On mine it's buttery smooth throughout its range. I have no problems focusing my ASI174MM guide camera with it. The issue I have with it is that there's no locking ring to keep it at the focus point, unlike a lot of finder scopes. The front smooth half of it looks like it should be a locking ring but it's not. I emailed the vendor and they verified there's no lock.

Tape?



#5 SouthWestAstro

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Posted 03 March 2024 - 02:34 PM

I don't understand. One focuses by turning the knurled ring. On mine it's buttery smooth throughout its range. I have no problems focusing my ASI174MM guide camera with it. The issue I have with it is that there's no locking ring to keep it at the focus point, unlike a lot of finder scopes. The front smooth half of it looks like it should be a locking ring but it's not. I emailed the vendor and they verified there's no lock.

The knurled ring rotates freely but the two parts at the front stay stuck together. They don't separate, revealing the focus scale, like in the video.



#6 PIEJr

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Posted 03 March 2024 - 03:38 PM

The knurled ring rotates freely but the two parts at the front stay stuck together. They don't separate, revealing the focus scale, like in the video.

I could suggest a gentle pull on the forward while turning the knurled ring.

But may be best to return it, and not fiddle with it.

You don't want to pay double to get a working scope. bawling.gif


Edited by PIEJr, 03 March 2024 - 03:39 PM.


#7 starblue

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Posted 03 March 2024 - 04:48 PM

Yes, the 2 sections should separate as you turn the knurled ring, revealing the focus scale. If that's not happening, you should return or exchange it. 


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