Current Price: $350.00
Buy It Now Price: $350.00
Bids: 0

  1. Quartz Glass Dia 14inch/thick 1 inch  Reflector telescope mirror blank,Coefficient of expansion=0,weight=5.5KG(Quartz Glass 2.22g/cm3?pyrex glass 2.23g/cm3),Quartz Glass,Melting point = boiling point=Cloud and mist,<1%the measure of area,<0.004 Magnitude.and supplies for grinding your own telescope mirror. 
  2. This is a sample, just to look at things, there is not much use value, the value lies in the larger size, can go to 30inch.

Filed under: Eyepieces & Accessories