Backyard Universe Primary Mirror Mask for GSO/StellaLyra/TS 200mm Newtonian
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Backyard Universe Primary Mirror Mask for GSO/StellaLyra/TS 200mm Newtonian

£59.00
  (1 Review)
✓ 2 year warranty

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

Model:  bu_pmm_GSO_200
Part Number:  BU2023-009

Backyard Universe Primary Mirror Mask for GSO/StellaLyra/TS 200mm Newtonian Telescopes

For installation on the primary mirror, this precisely machined mirror mask effectively covers the mounting clamps and the outer area of the primary mirror. 

Eliminates diffraction phenomena caused by the mounting clamps and/or a sloping mirror edge. 

What's in the box

  • 1 x Primary Mirror Mask, suitable for 8" GSO/StellaLyra/TS Newtonians 

Customer reviews

Average Rating (1 Review):  
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Nice Precision Made Mask For GSO 8" F/5 Mirror
19 July 2024  | 

This Newtonian mirror mask from Backyard Universe fit my GSO 8" mirror perfectly. I particularly liked the inside circumference bevel they machined into it. Very little of the mirror retaining clips had to be trimmed, instead I just ran them across a medium flat file to remove any excess instead of trying to use a blade for such a small amount.

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