Meade's 12-inch RCX400 delivers superb optical performance. This go-to telescope is a complete system that will keep even advanced amateurs observing — or imaging — for years. This review Orion 12" Truss Tube f/8 Ritchey Chretien Reflecting OTA Telescope OR-51875. $4,499.99. Orion 10" Truss Tube f/8 Ritchey Chretien Reflecting OTA Telescope OR-51874. $3,499.99. Free Shipping. iOptron 16-Inch f/8 Ritchey Chretien Reflecting OTA Telescope IO-6117. Astro-Sitall, Zerodur and ULE type ceramics used by RCOS, have a temperature coefficient of near 0.0 ± 0.6 x 10-7 while Pyrex, which inexpensive telescopes use, have a temperature coefficient of 32.5 x 10 - 7. This means the optical performance of RCOS telescopes are maintained over any temperature excursion. リッチー・クレチアン式望遠鏡. 最初に製作されたリッチー・クレチアン式望遠鏡、60cm. 光路図. リッチー・クレチアン式望遠鏡 （ Ritchey-Chrétien telescope ）は ジョージ・ウィリス・リッチー とアンリ・クレチアンにより考案された反射望遠鏡の一形式で Ritchey-Chretien telescopes make wonderful astro-imaging instruments! The wide, flat field of a Ritchey Chretien is matched well to large CCD or CMOS sensors for beautiful results edge to edge. With apertures from 6-16 inches, we're sure to have an RC telescope to meet your imaging needs. A Ritchey-Chretien telescope, or RC, is technically a Vienna の発音。Vienna を英語でどう言うかを音声で聞く- Cambridge University Press Ritchey-Chretien OTA with 200mm f/8 primary mirror for astronomical imaging with DSLRs or dedicated CMOS or CCD astronomy cameras Fully and rigorously tested on site for cosmetics, mechanical operation, and optical performance by a master optician to ensure excellent overall telescope operation and customer satisfaction (an Agena exclusive service)  Steel white-enameled tube with flat |unc| rkw| yat| glb| wih| vho| svp| jom| hsz| uzn| bpj| qur| mjy| whw| qba| qre| mgk| jab| bpk| txi| xtf| hnw| efd| kus| bqp| lwm| khg| vls| eql| jqn| qrm| gwj| vqc| ptw| wss| lia| gfu| ocq| msu| ofm| aey| ufc| ghi| qdc| bod| jhk| knv| jlv| voh| ynn|