Ritchey-Chretien astrograph

carbon truss

Astrograph Ritchey-Chretien Telescope

Cassegrain- Dall Kirkham

Telescope Cassegrain pure

Ritchey-Chretien astrograph

carbon tube

Asrtograph Ritchey-Chretien Tube

New advanced Schmidt- Cassegrain

New Schimdt Cassegrain telescope