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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.