WebOptics and Tube. This RC OTA comes with 200mm (7.9”) mirror with a 1600mm focal length, giving it a relatively fast focal ratio of f/8 in a compact steel tube that’s only 18” long. The precisely figured hyperbolic primary mirror is … WebPhotron 200 8 inch Ritchey-Chrétien Telescope ... Availability: More on the Way to us: Delivery time: More on the Way to Us: The iOptron® Photron™ Ritchey-Cretien design …
Astro-Tech 6″ Ritchey-Chrétien Imaging Review - Soggy Astronomer
WebThe Photron 250 RC OTA by iOptron is a 250 mm (10-inch) Ritchey Chretien astrograph telescope OTA designed for today's astroimager for a complete imaging and visual system. Introducing Photron, ... The 200 mm model includes 1 Losmandy-style and 1 Vixen-style mounting plates. WebTelescope Under £200; Telescopes Above £500 Deep Sky; ... The iOptron® Photron™ Ritchey-Chrétien design telescopes feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dietetic coatings. ... #6111 6" RC OTA only OTA w/2" dual speed Crayford focuser 2X25mm, 1X 50mm focus extention highest efficiency heat pump systems
iOptron Photron 406mm f/8 Ritchey-Chretien Catadioptric …
WebiOptron Photron™ Ritchey-Chretien designed telescopes boast primary and secondary mirrors consisting of low thermal expansion quartz with 99% reflective dielectric coatings. … WebBuy iOptron Photron 250mm f/8 Ritchey-Chrétien Catadioptric Telescope (OTA Only) featuring 250mm Ritchey-Chrétien Catadioptric OTA, 2000mm Focal Length, f/8 Focal … WebThe iOptron® Photron™ Ritchey-Chrétien design telescopes feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dielectric coatings. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color or monochrome imaging. how get credit card numbers