PST Mod

[Grant]

Thanks to Merlin's PST Mod guide, I am looking to mod mine and my dad's PST...

We have a little used, 70mm Vixen F9, would this be suitable? I've seen lots of recommendations for the 80mm F10 Vixen but would the one we already have do?

Thanks in advance for any advice!

Cheers,

Grant

[Merlin66]

The 70mm f9 would only result in an "effective" (70 x 9)/10 = 63mm aperture system, a bit on the small side but it would work...the cost of the ERF is probably more than the scope?

[Grant]

Hi Merlin - you've answered my question! I think we will get the Vixen 80mm F10 that you recommend, I don't see the point in doing this if we don't do it properly!

Cheers,

Grant