Aspherical Light-weighted Mirrors
Glavkosmos
Light-weighted aspherical mirrors made of low-CTE Sitall glass-ceramic for ground-based and space optical systems.
Technical specifications
- Purpose
- Complete set of objectives for ground-based dynamic opto-electronic components (OEC) and ERS
- Year of release
- 1993
- Production / delivery time
- 14 months (estimated)
- TRL
- Not flight qualified — contained in customer's apparatus
- Customization
- Adaptable to customer requirements; produced per customer's WDD
- Surface quality
- less than 30 nm RMS
- Material
- Sitall CO-115M (extra-low CTE)
- Light-weighting
- up to 70%
- Reflective coating
- Al+SiO2
- Interface
- Glued interface elements, aspherical rotation surface
About
Aspherical mirrors intended for the complete set of objectives in ground-based dynamic opto-electronic components (OEC) and Earth remote sensing (ERS) instruments. Manufactured from Sitall CO-115M material with extra-low coefficient of thermal linear expansion and light-weighted up to 70% to reduce mass while preserving optical stability. Features an aspherical rotation surface, glued interface elements, and a reflective Al+SiO2 coating. Reflected wavefront RMS is better than 30 nm. The item is produced in accordance with the customer’s working design documentation (WDD), so exact dimensions and mount interfaces are tailored per order. Estimated production/delivery time is 14 months.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
