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Telescope accessories > Prisms & Diagonal mirrors > Diagonal mirrors > William Optics > William Optics Dura Bright 1.25" 90° mirror star diagonal
Product no.: 48962

Dura Bright 1.25" 90° mirror star diagonal

RRP: $ 194.00 Our price:
$ 172.00 incl. VAT, plus shipping costs
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Product description

A dramatic step forward in the evolution of mirror diagonals!

This mirror-type star diagonal has a dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations.

Top-Notch Performance and brightness:

  • High precision 12mm thick mirror substrate flat for optimal image stability
  • Polished to 1/10th wave accuracy
  • Accurate design guarantees constant alignment. No further alignment needed

Meticulous Craftsmanship:

  • Lock screw for eyepiece or adapter
  • Big, knurled thumbscrews are easy to turn even with gloves on
  • High-quality machining out of aluminum
  • Internal antireflection baffling for highest contrast
  • Real Carbon Fiber side plates

Superbly Constructed:

  • Compression rings (both on diagonal and adapter) to prevent barrels from marring
  • Internal safety stop prevents 1.25" barrels from hitting the mirror
  • Designed for high-end scope

Specifications

Capacity


Coating of optical system
dielectric
Connection (to the telescope)
1,25"
Connection ( to eyepiece)
1,25"
Surface accuracy
1/10
Surface reflection
99
Viewing posture
90°

Special features


Filter thread
yes
Ring clamp
yes

General


Weight (g)
210
Type
Deviating optics
Type of build
Diagonal mirror
William Optics Dura Bright 1.25" 90° mirror star diagonal
William Optics Dura Bright 1.25" 90° mirror star diagonal
William Optics Dura Bright 1.25" 90° mirror star diagonal
William Optics Dura Bright 1.25" 90° mirror star diagonal

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