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nmnh Fragrance Tag FREE worldwide shipping over $75

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12" F/8 M-LRC Ritchey-Chrétien Telescope OTA (Optical Tube Assembly)

12" F/8 M-LRC Ritchey-Chrétien Telescope OTA (Optical Tube Assembly)

Optics: RC Ritchey-Chrétien optics
Aperture: 304 mm / 12"
Focal Length: 2432 mm
Focal Ratio: f/8
Resolution: 0.38"
Reflectivity: 99% reflectivity non-tarnishing dielectric mirror coatings
Back focus: 233 mm from the back, 127 mm from the 2" receptacle of the focuser
Connection at focuser: 2", 1.25"


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Description

這款 12" f/8 RC 是一款一流的 12" 天文攝影望遠鏡,具有卓越的性能,價格合理,非常適合固定安裝使用。

口徑 12" / 304 毫米焦距 2432 毫米,

焦比 f/8具有雙曲面鏡的利奇-克里汀星表主鏡和次鏡上的 99% 增強反射,

可獲得更亮的圖像和更短的曝光時間鏡片基材由石英玻璃製成 - 冷卻過程中不再有干擾的熱膨脹3" M-LRN Monorail 對焦器,

帶有減速功能 - 2"、1.25" 和 M69x1 螺紋適配器可供選擇純反射光學,具有大範圍的糾正圖像場 - 也可用於紅外攝影開放式設計和主鏡通過三個風扇通風,

冷卻時間更快包含兩個 Losmandy 樣式的鴿尾條 - 非常適合輔助設備,如導星鏡或背載攝影機支架對焦器的間隔墊片(2x 25 mm,1x 50 mm)已包含在交貨中可選擇使用 RC 糾正器進行較大感光元件的糾正

Shipping & Payment

Delivery Options

  • 順豐到付
  • EMS (Small items ONLY)(7-14days)
  • FedEx International Priority® (Small items ONLY)(3-5days)
  • Worldwide Shipping (Ask shipping cost before purchase)
  • SELLER DELIVERY

Payment Options

  • Credit Card