PST conversion?

[garymck]

Hi,
Have a chance to buy a PST double stack used for an extremely favourable price. Have seen the conversions to 80mm and 100mm done with the single stack, but can the double stack be used in the conversions also?
TIA
Gary

[Martin_S]

Gary, I think your best option would be to post your question in the Solar Chat forum. There is a lot of resources for PST mods.

https://solarchatforum.com/index.php?sid=03c506db54f9bc11ab0e8 695269f8bda

Martin

[Merlin66]

Gary,
The PST mod adapts the original internal PST etalon for use in larger aperture scopes, preferred f10, fitted with an ERF.
The external PST double stack etalon is 40mm aperture, so not much use with a
larger PST mod.
I have a PST mod document available, drop me an email address for a copy.