Backyard Universe Secondary Mirror Spider for Sky-Watcher 130mm Newtonian Telescopes

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About this product

Backyard Universe Upgraded Secondary Mirror Spider for Sky-Watcher 130mm Newtonian Telescopes.

CNC milled secondary mirror spider made of matt black anodised aluminium (EN AW-6061), suitable for Skywatcher 130PDS. 

This secondary mirror spider is manufactured on a modern CNC machining centre. 

The high-precision manufacturing ensures the 1.8mm thick struts of the spider are perfectly aligned, and the diffraction-related spikes on bright stars appear razor-sharp. 

The light, stable design optimised by FEM simulation also considerably improves the Skywatcher Newtonian's collimation stability. 

What's In The Box

1 x secondary mirror spider, suitable for Skywatcher 130PDS (inner tube diameter 158mm), black matt anodised

4 x fastening screws M5x6 (for fastening in the tube)

3 x stainless steel studs M4x25 (with tip) for collimation

3 x M4x25 studs (with cone head) for collimation

1 x stainless steel fastening screw M5x25 for fastening the secondary mirror holder

1 x stainless steel disc 35x15x1.5 (for the optional optimisation of the secondary mirror holder)

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