Askar 130PHQ - 130 mm f/7.7 Quadruplet Air Spaced Astrograph - 130PHQ Cassegrain Waterproof and Fogproof

Askar 130PHQ - 130 mm f/7.7 Quadruplet Air Spaced Astrograph - 130PHQ Cassegrain Waterproof and FogproofThe Askar 130PHQ is a long focal ratio, flat field astrograph. Instead of buying extra flatteners, calculating the back focus for your flattener and then adding extensions or adapters to match the calculated distance, astrophotographers can simply equip the Askar 130PHQ with any imaging device, keep the target in focus, and then the whole optical system is ready for imaging. The 130PHQ has an aperture of 130 mm, a focal ratio of f 7. 7, and a focal

SKU: 35449596451 · From chapuisstores.ch