Name: Global Optics- Spider for 12" Newtonians - 339 to 355 mm inner tube diameter
SKU: 62b2889c09b8b8002a557441
Price: 2480.0 TWD
Availability: InStock

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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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Description

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.

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