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Nosepiece for the Celstron SCT Turret

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11 replies to this topic

#1 Tom Duncan

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Posted 18 February 2021 - 04:40 PM

Over the years I've had several of these 1980's Celestron "Multiple Ocular Holder"'s (aka 'turret') made by Vixen and though neat I've let them go, partially because the are for SCT's only. The most recent one is in nearly mint condition and I have a nice set of Meade RG's to fill it up so I'm going to hang on to it for a while. However if I could insert it into a standard drawtube (either 2" or 1.25") I'd be even more inclined to keep it and use it. 

 

So my question is, does anyone make an adapter to do so? The SCT tube threads right off revealing male threads of 39.8mm OD (peak to peak). I'm hoping I can find a tube with female threads to fit that and on the other end have either a 1.25" or 2" nosepiece. 

 

Anyone know of a solution? 

 

Thanks

 

Tom Duncan 

 

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#2 starman876

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Posted 18 February 2021 - 04:43 PM

I am sure there is a way to adapt it.  Look into the Baader  adapters.  I still have one of these also.  Think I will check it out to see if it can be adapted.



#3 J A VOLK

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Posted 18 February 2021 - 04:50 PM

looks like maybe filled with RG eyepieces!



#4 ngc7319_20

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Posted 18 February 2021 - 05:02 PM

I use a Baader ring #28 to reduce the Schmidt-Cass thread to standard T-thread.  Then put a T-thread to 2" camera adapter on it.  So you end up with something that plugs into a standard 2" inlet on a refractor.

 

https://alpineastro....gth-t-2-part-28

 

https://alpineastro....big-t-2-part-16

 

There are probably other ways to do it...


Edited by ngc7319_20, 18 February 2021 - 05:04 PM.


#5 Foundationer

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Posted 18 February 2021 - 08:16 PM

I want that! When are you gonna put it

in the classifieds?waytogo.gif



#6 Tom Duncan

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Posted 18 February 2021 - 08:37 PM

looks like maybe filled with RG eyepieces!

Yep!

 

I want that! When are you gonna put it

in the classifieds?waytogo.gif

I'm going to hang on to it for a while, I really want to see this attached to the drawtube of my refractors. As an aside these show up once in a while in the CN and Am ads, usually hovering around $100. 

 

I use a Baader ring #28 to reduce the Schmidt-Cass thread to standard T-thread.  Then put a T-thread to 2" camera adapter on it.  So you end up with something that plugs into a standard 2" inlet on a refractor.

 

https://alpineastro....gth-t-2-part-28

 

https://alpineastro....big-t-2-part-16

 

There are probably other ways to do it...

Thanks for the suggestion, I'll look into that. 

 

Tom 


Edited by Tom Duncan, 18 February 2021 - 08:38 PM.

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#7 RichA

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Posted 18 February 2021 - 08:44 PM

looks like maybe filled with RG eyepieces!

Be way more impressive than Baader's plastic job filled with modern orthos.



#8 davidmcgo

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Posted 18 February 2021 - 09:30 PM

There are a number of 2” to SCT thread adapters available. Will make it a little longer but should work OK if the refractor can handle a 2” diagonal.

 

https://agenaastro.c...19-2408155.html
 

Dave


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#9 Bomber Bob

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Posted 19 February 2021 - 01:06 PM

Tom, on my NOS vintage Vixen SCT turret, all that SCT hardware comes off, and an old Celestron (Vixen) chrome 1.25" barrel from a prism diagonal threads in:

 

Celestron (V) Eyepiece Turret S01.jpg

 

I got mine cheap in part because the 4 slots are for .965" eyepieces.  Not a problem for me - got plenty of quality eyepieces in that small barrel size.


Edited by Bomber Bob, 19 February 2021 - 04:44 PM.

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#10 photoracer18

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Posted 19 February 2021 - 05:16 PM

Over the years I've had several of these 1980's Celestron "Multiple Ocular Holder"'s (aka 'turret') made by Vixen and though neat I've let them go, partially because the are for SCT's only. The most recent one is in nearly mint condition and I have a nice set of Meade RG's to fill it up so I'm going to hang on to it for a while. However if I could insert it into a standard drawtube (either 2" or 1.25") I'd be even more inclined to keep it and use it. 

 

So my question is, does anyone make an adapter to do so? The SCT tube threads right off revealing male threads of 39.8mm OD (peak to peak). I'm hoping I can find a tube with female threads to fit that and on the other end have either a 1.25" or 2" nosepiece. 

 

Anyone know of a solution? 

 

Thanks

 

Tom Duncan 

Meade has been making 2" to SCT thread adapters since at least the early days of the 102/127/152/178 ED/APO refractors because they recommended using the SCT .63x reducers on them from the start. I have been using one of the Celestron turrets in my refractors off and on for a couple of years this way. This is the newest version of one I think from Lumicon.

EA20-2.24.jpg


Edited by photoracer18, 19 February 2021 - 05:26 PM.


#11 Tom Duncan

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Posted 19 February 2021 - 07:38 PM

Meade has been making 2" to SCT thread adapters since at least the early days of the 102/127/152/178 ED/APO refractors because they recommended using the SCT .63x reducers on them from the start. I have been using one of the Celestron turrets in my refractors off and on for a couple of years this way. This is the newest version of one I think from Lumicon.

attachicon.gifEA20-2.24.jpg

I'll look into that, thanks. 

 

 

Tom, on my NOS vintage Vixen SCT turret, all that SCT hardware comes off, and an old Celestron (Vixen) chrome 1.25" barrel from a prism diagonal threads in:

 

attachicon.gifCelestron (V) Eyepiece Turret S01.jpg

 

I got mine cheap in part because the 4 slots are for .965" eyepieces.  Not a problem for me - got plenty of quality eyepieces in that small barrel size.

Looks like the construction is quite a bit different with the Vixen .965" version. There are female threads on the inside of the back plate but they are too large for a 1.25" nosepiece. 

 

Tom


Edited by Tom Duncan, 19 February 2021 - 07:38 PM.


#12 luxo II

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Posted 19 February 2021 - 07:57 PM

I want that! When are you gonna put it

LOL you can still buy TEC turrets. But you can't buy one of these anymore

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