[rogerg (Roger)]

Originally Posted by Dennis

Hi Roger

I believe that the differences may be in sharper wavelength cut-offs, improved transmission, par focal behaviour and IR/UV blocking so a separate IR/UV clear filter is not required.

This is what I understood when I purchased my Astronomic Type 2c LRGB set for my CFW9 a few years ago.

Cheers

Dennis

Thanks Dennis. That's the sort of thing I'm expecting but just trying to find specifics. I thought mine did have IR blocking but looking at the cases it doesn't say, so perhaps my understanding has been wrong. I've emailed Astronomik to ask for clarification.