Yes the first or front face mirror is available but expensive. It also isn't truly front - as a protective layer of something is used to keep the airborne chlorine and salts from eating up the Al.
Telescope mirrors are front face - have to be - and are replaced periodically due to the chloride issue. That is when the comet catcher sees a field of stuff that doesn't move :-)
Martin
Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH, NRA Life NRA Second Amendment Task Force Charter Founder
jim rozen wrote: