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Sky-Watcher 90 deg.- 2" Dieletric Diagonal
Sky-Watcher 90 deg.- 2" Dieletric Diagonal

Sky-Watcher 90 deg.- 2" Dieletric Diagonal

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Your Price: CAD188.53
Retail Price:CAD198.45

Your Savings:CAD9.92(5%)

Out of Stock
Part Number:90714

Improve the quality of your refractor or Cassegrain* scope with the Sky-Watcher 2" Dielectric star diagonal.

The mirror uses a stack of dielectric (non-conductive) interference coatings on glass substrate, which results in a 99% reflectance of the light across the broad visible spectrum. These coatings are more durable than Aluminum or Silver coatings.

Like all well-engineered products, this diagonal is precision machined out of Aluminum to deliver excellent optical alignment. Internal threaded baffles and black anodized to provide maximum contrast. Brass compression fittings with a knurled thumbscrew will not mark your eyepiece barrels.

*An optional 2" visual back adapter (sold separately) will mate these to Celestron and Meade Schmidt-Cassegrain telescopes.


  • Dielectric coated mirror for higher reflectance
  • Brass compression fitting for a secure, non-marring connection
  • Black anodized Aluminum construction


  • Mirror: Dielectrically coated, 99% reflectance
  • 2" interface
  • Standard 2" Filter thread on 2" barrel and on 1.25" reducer adapter
  • Optical Length: ~11cm (4.3")
  • Width: 65mm (2.6")
  • Weight: 491g (17.2oz)
  • Color: Black and silver

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