Major completed projects

 
1. Spherical test mirror with diameter 1980 mm and radius of curvature 2708 mm
2. Convex hyperbolic mirrors testing measurements in two Hindle spheres

Within 1999-2002 years period LZOS Company as a sub-contractor of Carl Zeiss (Germany) manufactured the following items:

• two Secondary mirrors with diameters 645 mm (F/2.5) for TTL Project (Telescope Technologies Limited, Great Britain). Asphericity is about 12 microns of the nearest matching sphere. RMS of Surface is about 9 nm. The mirrors system: The Primary and The Secondary has Encircled Energy 80% in spot less than 0.2".
• the secondary mirror with diameter 753 mm (F/2) for NOA (Astronomical Institute - National Observatory of Athens, Greece). Asphericity is about 26 microns. RMS of surface is aprox. 12 nm. The telescope viewing field is about 1.04^o. The mirrors system: Primary and Secondary has EE 80% in spot less than 0.3".
• the secondary mirror for VLT Survey Telescope, Osservatorio Astronomico di Capodimonte Napoli. Mirror diameter is 938 mm (F/2.3) with asphericity about 100 microns. Telescope will have field of view 1.5^o with correctors. To conduct testing of three Secondary mirrors three Hindle spheres were used which diameters correspondingly1610 mm, 1640 mm and 1985 mm and Radiuses 6300 mm, 3995 mm and 2708 mm. Each convex hyperbola was tested with twin of Hindle spheres and a wave-front of the mirrors under testing was defined by means of wavefronts overlapping.