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Thread size. RF Coronado 60mm Etalon?

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4 replies to this topic

#1 buddy ny

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Posted 10 July 2019 - 04:22 PM

Does any one know the
Thread size & pitch
For the 60mm T-II Coronado rich-field Etalon. I'm trying to see if they will mate up to the TV Pronto or a TV 76 cap threads ?Also are the thread sizes "universal" ( to Coronado)
On the type 2' & 3's on the RF Etalons.
I know there's the adapters for Double stacking made by Coronado, are the adapter threads the same
Any info. Would by very cool & welcomed

Edited by buddy ny, 10 July 2019 - 04:55 PM.


#2 buddy ny

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Posted 10 July 2019 - 04:24 PM

Btw...i already called TV
They weren't sure on the Pronto.. Think they are a match ,,but not 100% positive

Edited by buddy ny, 10 July 2019 - 04:56 PM.


#3 Oldfield

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Posted 12 July 2019 - 01:36 AM

82mm.... I used a 82mm to 77mm step down ring for my Ranger


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#4 buddy ny

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Posted 13 July 2019 - 10:14 PM

82mm.... I used a 82mm to 77mm step down ring for my Ranger

Thank you
Did you Fab your own ring?
The reason I ask is is 2 fold, 1st is, I got to make one, or where did you get it.
2nd is Actually a, TV rep asked me if I found a solution , or the RF - T2 thread. Size, .to get back to them. , as they wanted to know also.
I said I would
TV Has always been good to me so i dont mind
Thanxs
The 90mm SM II will thread on to a 101mm, 102mm & the Genesis. That's on the daystar site. Old info from when TV sold the "Solaris"

Edited by buddy ny, 13 July 2019 - 10:22 PM.


#5 Oldfield

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Posted 17 July 2019 - 09:15 PM

I bought one off the shelf, had been using it for a couple of years, no problem.




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