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1.25" 99 Percent reflectivity Everbite mirror, 60 degree viewing
$322.00This unique 60° viewing angle 1.25" diagonal is a sensible step up for comfortable extended viewing of the Moon and planets, as well as more comfortable terrestrial observing . . . -
Takahashi 1/10Th wave accuracy 2" compression ring Diagonal w/1.25" adapter
$580.00This 2" diagonal uses a telescope-grade elliptical mirror with a guaranteed 1/10th wave surface accuracy for superb high contrast/high detail lunar, planetary, and deep space images . . . -
Questar 2" Quartz silver mirror for 7" Questars
$895.00This 2" Questar star diagonal allows the use of 2" eyepieces with the 7" Questar Maksutov. Its 1/20th wave first surface quartz mirror has silver mirror coatings for optimum light transmission and contrast. -
1.25" mirror diagonal for Brandon eyepieces on a 3.5" Questar
$335.00This Questar #19107 star diagonal is designed for axial viewing with 3.5" Questar telescopes only . . .
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1.25" Everbrite 99% Reflectivity mirror diagonal
$285.00This 90° 1.25" first-surface mirror star diagonal has Everbrite dielectric mirror coatings for a full 99% reflectivity, the highest possible . . . -
Tele Vue Adapter to use 2" refractor diagonals on Schmidt-Cassegrains
$60.00This adapter tube lets you use 2" refractor-type star diagonals on a Schmidt-Cassegrain telescope's threaded rear cell . . . -
1.25" Enhanced aluminum 96% reflectivity mirror diagonal
$189.00This 90° 1.25" mirror-type star diagonal uses enhanced aluminum mirror coatings for a full 95% reflectivity. The mirror is overcoated with quartz for long life. The mirror housing and 1.25" barrels are precision-machined from a single block of solid aluminum, rather than being simply a pair of less-rigid tubes screwed into a flimsy plastic mirror housing or sheet metal stamping, as with lesse . . . -
Celestron 2" DIELECTRIC STAR DIAGONAL WITH TWIST-LOCK
$249.95Enjoy better views through your telescope with this premium diagonal featuring diffraction-limited optics and dielectric coatings