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nmnh Fragrance Tag FREE worldwide shipping over $75

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Global Optics- Spider for 12" Newtonians - 339 to 355 mm inner tube diameter

Global Optics- Spider for 12" Newtonians - 339 to 355 mm inner tube diameter

♦ Suitable for tube inside diameter 339 mm to 355 mm

♦ The diameter of the central tube is 45 mm.

♦ The spider vanes are made of metal and with 1 mm thin, but massive enough to hold heavy mirrors.

♦ Three M4 internal threads for collimation of the secondary mirror, fitted with grub screws

NT$2,480
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商品描述
The secondary mirror spider is ideally suited for the construction of Newtonian telescopes for observation. The spider is optimized to cause as little obstruction as possible.
The inner part has a diameter of 45 mm and thus allows the use of secondary mirrors from 46 mm diameter in the minor axis.
The spider has an M5 thread on the outside. It is attached to the tube using M5 knurled nuts, which are included in the scope of delivery.
送貨及付款方式

送貨方式

  • FedEx International Priority® (Singapore)
  • 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)
  • 賣家宅配
  • 7-11 取貨付款 (C2C)
  • 全家 取貨付款 (C2C)

付款方式

  • PayPal
  • 信用卡付款
  • 全家 C2C 取貨付款
  • 7-11取貨付款

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