telescope mirror blanks

PRECISION ANNEALED SUPREMAX TELECSOPE MIRROR BLANKS

Corning no longer produces Pyrex for optical use, however Advanced Glass Industries has a limited stock of Pyrex in house.  AGI also supplies Schott SUPREMAX 33 mirror blanks. SUPREMAX 33 is a borosilicate Pyrex equivalent, and is an excellent alternative for telescope mirror blanks. Our blanks have the following standard characteristics:

  • Precision annealed material (6 Mu or less guaranteed)
  • Edges diamond ground with a 220 grit finish
  • Dimensional tolerances +/-.010”
  • Main face diamond ground flat to .033” with a 120 grit finish
  • Curves diamond generated to +/-1% of radius with 120 grit
  • All edges chamfered



Telescope mirror blanks in a variety of
                          sizes

STANDARD SUPREMAX TELESCOPE MIRROR BLANK Size LIST

Diameter thickness plano-plano plano-concave
6" 1.000"

8" 1.375"

10" 1.625"

12" 2.000"

14" 2.000"

16" 2.000"

18" 2.000"

20" 2.000"

22" 2.000"



Zerodur mirror blank

TELESCOPE MIRROR BLANKS MADE TO YOUR SPECIFICATIONS

If one of our standard telescope mirror blanks isn’t exactly what you’re looking for, Advanced Glass can custom make a telescope mirror blank to your specifications.

  • AGI can manufacture mirror blanks up to 40” in diameter
  • AGI can diamond machine ID holes into your mirror blank
  • AGI can produce elliptical mirror blanks in 45 degree and 90 configurations
  • AGI can manufacture mirror blanks from any of our low expansion materials
  • Need more than one telescope mirror blank? Quantity discounts are available.

Contact us today about our telescope mirror blanks needs.