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Celestron 130 SLT 2" adapter

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8 replies to this topic

#1 CollinofAlabama

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Posted 04 December 2020 - 12:18 AM

Folks,

 

Picked up a used C130STL.  It came with the native focuser's 60mm-ish hole to 1.25" eyepiece adapter, but not a 60mm-ish hole to 2" adapter.  I found this, but first wondered if this is the same thing, and then, if it is, does Celestron or SkyWatcher make one more reasonably priced?



#2 graffias79

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Posted 04 December 2020 - 12:57 AM

Here is what the adapter looks like on mine. I hope you are able to locate one.

 

PXL_20201204_054501268~2_resize_20.jpg

 

PXL_20201204_054458974~2_resize_67.jpg



#3 CollinofAlabama

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Posted 04 December 2020 - 01:28 PM

Yes, exactly, Graffias79!  That's what I need, but don't have.  Does anyone know a reasonably priced source for that adapter?

 

I took this picture of the drawtube with a ruler.  I wrote "60mm-ish", but looks like it's 57mm, or maybe 58mm ...

 

Attached Thumbnails

  • drawtube.jpg

Edited by CollinofAlabama, 04 December 2020 - 09:23 PM.


#4 Don H

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Posted 04 December 2020 - 02:59 PM

Maybe Scope Stuff has something that would work:

 

http://www.scopestuf...Visual Adapters



#5 KerryR

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Posted 04 December 2020 - 03:10 PM

Last year, I bought a used 130mm SLT that didn't come with a 2" adapter. I contacted Celestron customer service by email about purchasing one directly from them, and they sent me one for free.

It's an odd size, so I think it'll be hard to find another source for these...

On another note, I don't find myself grabbing 2" ep's with this ota very often; it's my largest "one trip, one hand out the door scope", so I tend to use 1.25" ep's in bolt cases in a hip pack when I use this ota.

On another another note, I notice that the secondary is a teeny bit undersized, or at least bare minimum, so the fully illuminated field is probably a little small. That's not really a deal breaker, but it's another reason I feel fine 'limiting' myself to 1.25" ep's with this ota.


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#6 CollinofAlabama

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Posted 04 December 2020 - 09:55 PM

Don H, thanks, but I looked there already, and Agena, too.  Didn't find a thing at either place, thus this post.

 

KerryR, I understand about the possibility of field illumination drop off, but I'm not too worried about that, exactly.  First, I have other needs for having a 2" sized drawtube option, besides going from a maximum true field of view from 2.38° to 3.35°, I own two accessories that require a 2" focuser-sized slot to function.  One is an AstroTech (aka GSO) 2" coma corrector, which will reduce my field of view somewhat with its 1.15x magnification, but would produce a flat field across the near 3° true field of stellar real estate.  In addition to that, I also have a 2"-to-1.25" helical focus adapter, for fine-focusing I picked up off Alibaba.com.  Since replacing the standard focuser is a little difficult right now (people don't seem to make adapter plates for 130mm tubes), this should take care of fine-focus issues, but again, I need this 57mm-to-50.8mm Synta focuser adapter.  But thanks for the tip about contacting Celestron directly.  Think I'll do that.

 

helical-focuser.jpg


Edited by CollinofAlabama, 04 December 2020 - 10:01 PM.


#7 graffias79

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Posted 05 December 2020 - 12:28 AM

My GSO 2" 30mm eyepiece gives a very nice wide field with the SLT.  I will say that the central obstruction is very obvious when using the scope in daylight but I'm sure that has more to do with the low magnification.


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#8 CollinofAlabama

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Posted 18 December 2020 - 07:12 PM

Well folks, here it is ...

 

with_adapter.jpg

 

Special thanks to KerryR for his advice to contact Celestron directly.  I did, showed them the CN Classifieds ad when asked for my "proof of purchase", and showed them the pictures of the adapter which I'd gotten from the Stargazer's Lounge site (of a SkyWatcher) and those posted here on this thread.  Well, 16 days later and voilà, everything good.  Thanks SO much to Celestron for the customer servcie.  Bought a pair of tube rings from fellow CNer Jim of New Albany, Mississippi.  I am one happy camper.  ¡Feliz Navidad, babies!


Edited by CollinofAlabama, 18 December 2020 - 08:19 PM.

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#9 Don H

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Posted 19 December 2020 - 09:34 PM

Glad to hear you're up and running, just in time for the Great Conjunction. Did Celestron give you the part for free? Just curious...


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