Ritchey-Chrétien TelescopesLevenhuk Ra Ritchey-Chrétien OTA are compact and practical, capable of yielding high-quality, sharp views of observed objects. Ritchey-Chrétien telescopes are an improvement on the Cassegrain optical design – the primary mirror in such telescopes is concave, while the secondary is convex. These instruments have a high focal ratio and are, therefore, best suited for astrophotography.
Levenhuk Ra 250RC F8 OTA
Ritchey-Chrétien. Objective lens diameter: 250 mm. Focal length: 2000 mm
Levenhuk Ra 250RC F8 OTA is a Ritchey-Chrétien telescope with an aperture of 250 mm (9.8 in) and a focal length of 2000 mm (78.7 in) in a traditional metal shell. This model is perfect for any keen astrophotographer. One...More