Secondary mirror spider SW130, CNC-milled by Backyard-Universe

Description

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

This secondary mirror spider is manufactured on a modern CNC machining center. The high-precision manufacturing ensures that 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 optimized by FEM simulation also improves the collimation stability of the Skywatcher Newtonian considerably.

scope of delivery

• 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 optimization of the secondary mirror holder)