FUSED SILICA – QUARTZ – BLANKS and MIRRORS
Grinded Quartz blanks
For those who want to make their own telescope we offer the possibility to do it using one of the best materials, and certainly the best considering its characteristics in relation to its cost.
Our Fused Silica – Quartz – blank characteristics:
Density: 2.21 kg/dmc
Purity: SiO2＞99.99% – OH content: less than 120 ppm
CTE – Thermal expansion coefficient: 5.4 x 10-7/°K
Bubbles:
– micro-bubbles diam. < 0.3 mm: negligible
– bubbles 0.3 mm < diam. < 0.5 mm: < 5
– bubbles 0.5 mm < diam. < 1.0 mm: < 3
Quartz Blank Prices
-Outer diameter 308 mm +/- 0,2 mm; Thickness 36 mm +/- 0,5 mm: € 1.342,00 + VAT
-Outer diameter 360 mm +/- 0,2 mm; Thickness 40 mm +/- 0,5 mm: € 1.831,00 + VAT
-Outer diameter 410 mm +/- 0,2 mm; Thickness 46 mm +/- 0,5 mm: € 2.180,00 + VAT
-Outer diameter 462 mm +/- 0,2 mm; Thickness 50 mm +/- 0,5 mm: € 2.846,00 + VAT
-Outer diameter 515 mm +/- 0,2 mm; Thickness 58 mm +/- 0,5 mm: € 3.889,00 + VAT
NOTE: We can supply blanks up to 1 m in diameter.
We can supply optimized lightweight Quartz blank. Ask for a quote.
Prices refer to cylindrical plano/plano tolerated grinded discs.
Blanks of customized dimensions (diameter and thickness) can be supplied.
Additional workings such as holes or chamfers can be carried out with additionl costs
Wood box for shipment: included
Shipment cost: not included
Lightweight Quartz Blank
We can supply optimized lightweight Quartz blank.
Extremely low thermal expansion glass + back lightweight blank for fast thermal equilibrium, minimum mirror seeing, less weight. Only the best.
Ask for a quote.
Telescope Quartz Mirrors
For those who want a polished and coated, Near to Zero Thermal expansion mirror for their own high-end telescope, now we can supply it.
- Parabolic mirrors 250 to 650 mm
- Spherical mirrors 250 to 650 mm
- Classic Cassegrain system up to 650 mm
- RC system up to 650 mm
All mirrors made from our High grade Quartz Blanks with the characteristics above.
- Standard SiO2 coating [Reflection % Rabs > 88% for 500-600 nm Ravg >85% for 400-700 nm]
- Alum. Enanced coating [Reflection % Rabs > 93% for 500-600 nm Ravg >89% for 400-700 nm]
