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 Supremax 33 mirror blanks. Supremax 33, made by Schott, 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 PRICE LIST

diameter thickness plano-plano plano-concave
6" 1.000" $100 $175
8" 1.375" $185 $280
10" 1.625" $360 $480
12" 2.100" $650 $800
14" 2.100" $900 $1,135
16" 2.100" $1,325 $1,650
18" 2.100" $1,785 $2,225
20" 2.100" $2,335 $2,750
22" 2.100" $2,755 $3,200


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 blanks? Quantity discounts are available.

Contact us today about our telescope mirror blanks needs.