
ASA600 onDDM200 for ODK
Quantum Key Distribution with ASA600 on DDM200
In July 2025, an ASA600 telescope equipped with the DDM200 direct drive mount was delivered to Madrid for use in cutting-edge Quantum Key Distribution (QKD) research.
QKD enables the exchange of cryptographic keys using the principles of quantum physics, providing the foundation for ultra-secure global communication. The high precision and stability of ASA’s telescope and mount technology make it ideally suited for such pioneering applications.

ASA Impressions
Products in use
ASA ASA600 f7
Next level telescope ready for more with 0.6m aperture
- Optical design: Ritchey-Chrétien RC
- Linear central obstruction: 40%
- Focal length: 4200mm
- Focal ratio system: f7
- Clear Aperture / Focal Ratio Primary Mirror: 600mm (23.6 inch) / f2.5
- Image field: 100mm (1.36 degrees)
- Mirror material: Fused silica
- Surface quality: >94 strehl
- Microroughness: 1nm RMS / <0.7nm Ra
- Coating: Al+SiO2 >96 %
- Back Focus from flange: 211.85mm
- Weight tube: 92kg (203lbs)

































