mirror coating follow-up

[telscope@xxxxxxxxxx (Peter Abrahams)]

This was posted to sci.astro.amateur 2/5.  It can  also be found on AstroNet,
I believe.  There are many aluminizing services across the country, look in the
yellow pages.  They are really useful when a focusing surface needs to be
coated.  I have seen antique viewers for photos (monocular) that use a
4 or 5 inch concave mirror to view a photo placed below the chin of the 
viewer. These bi-ocular viewers (2 eyes through one optic) give a faintly
stereoscopic effect.  Were there any stereo viewers that used two 
focusing mirrors?  
PS to questioner--any progress on the book? still need reviewers?

---Mirror Coating Services
     Denton Vacum, 1259 N. Church Street, Moorestown, NJ 08057 
	   609-439-9100  Fast turnaround.  Can do up to 30"
     Evaporated Metal Films, 701 Spencer Road, Ithaca, NY 14850
	   607-272-3320
     P.A.Clausing, Inc.  8038 N. Monticello Ave. Skokie, IL, 60076  
	   708-676-0330 Voice, 708-676-2930 Fax, e-mail: 
	   hclaus@xxxxxxxxxxxxxxx,  Beral, Silver, Gold, Aluminum, 
	   Copper, Rhodium, (most other evaporable metals) and 
	   Overcoatings, Fast turnaround available.  Can do up to 
	   90" diameter, up to 1 ton weight (3 tons next year).
     Precision Applied Products, 418 Rumsey Place, Placentia, CA 92670
	   714-738-4775 In addition to standard and enhanced mirror
	   coatings, they offer MgF2 for refractor lenses and windows.
     QSP Optical Technology. 1712-J Newport Circle,  Santa Ana, CA  
	   92705 (714)-557-2299.  
     Southwest Optical Technologies, PO Box 65867, Tucson, AZ 85728
	   (520)-881-0863.  Vacuum coatings by Lynn Hepburn.
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telscope@xxxxxxxxxx (Peter Abrahams)          
the history of the telescope, 
     the prism binocular, and the microscope


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