Guys,
The views and images through modded PST's can be absolutely terrific!!
You have effectively a 80mm (or larger) aperture with a Ha bandwidth of <1 A
I've now done this mod four times (and there's another three on the go with amateurs here in Oz and in the UK), not difficult to do.... BUT....
You MUST, and I repeat, MUST have the correct and safe Energy Rejection filter (ERF) mounted on the front of the scope!!
The wrong filter will severely damage not only your PST etalon but could do irrepairable damage to your camera and your eyes!!!!!!
There are only a few good ERF suppliers in the world. Baader, if not #1 is pretty close.
A really great and exciting project, but be cautious, please
