Backyard Universe Secondary Mirror Spider for Sky-Watcher 150mm Newtonian Telescopes
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Backyard Universe Secondary Mirror Spider for Sky-Watcher 150mm Newtonian Telescopes

£145.00
  (2 Reviews)
✓ 2 year warranty

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3x in stock shipped 1-2 working days
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About this product

Model:  bu_sms_sw150
Part Number:  BU2022-002

Backyard Universe Upgraded Secondary Mirror Spider for Sky-Watcher 150mm Newtonian Telescopes.

This secondary mirror spider is manufactured on a modern CNC machining centre from matt black anodised aluminium (EN AW-6061), suitable for Skywatcher 150 P/PDS/Quattro. 

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

The collimation stability of the 6" Newtonian is also significantly improved thanks to the light, stable design optimised by FEM simulation.

What's In The Box

1 x secondary mirror spider, suitable for Skywatcher 150 P/PDS/Quattro (inner tube diameter 180mm), matt black anodised

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

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

3 x studs M4x25 (with conical head) for collimation (black)

1 x stainless steel fastening screw M5x35 for fastening the secondary mirror holder

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

Customer reviews

Average Rating (2 Reviews):  
Write a Review and share your opinions!
Rating (max 5):  
Backyard Universe Secondary Mirror Spider for Sky-Watcher 150mm Newtonian Telescopes
29 February 2024  | 

The Backyard Universe Secondary Mirror Spider for Sky-Watcher 150mm Newtonian Telescope is an excellent addition to my Skywatcher 150 Apo Astrograph, complimenting the 150mm Backyard Universe carbon fibre tube, as I use the telescope, mount and tripod with battery pack as a mobile device I have already noticed the lack of requirement to constantly colimate, which makes this purchase essential. Brilliant product especially with the carbon tube.

Rating (max 5):  
expensive but worth it
31 July 2023  | 

The major plus for me was the extra stability this spider offers for the secondary. This will help keep the mirror in better collimation for longer. Also , gone are the days of twisted spider vanes. Havent had the chance to check diffraction as I am currently experiencing the wettest July since 1960!!
A well made product backed up with FLO fast post

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