[ATMoB-discuss] 6" F 4.5 mirror for sale... only 1/3 wave...

[Jeff Albro]

I have a 6" mirror of unknown origin (picked it up off of Astromart) 
that I am selling as I now have a replacement from Mark Harry.  Sorry 
about all the clouds lately... my fault :)

6" diameter, F 4.5 (27" FL) 1" thick pyrex.  Surface dusty with some 
small scratches.  Silicone blobs on back.

Quick and dirty testing at the ATMOB clubhouse measured at about 1/3rd 
wave, and showed a turned down edge.  I have found it okay at the 
30x-50x power I usually used, but it was obviously bad at 150x.  It 
would probably be better with a mask taking it down to 5.75" or so.

I'm looking for $75 for it.  I'll ship it priority mail for free.  If 
no-one locally speaks up I'll put it up on Astromart.

Thanks!

-Jeff