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Orion 10mm, 17mm & 25mm Sirius, 1.25" Plossl Starter Eyepiece Set with 52 Degree Angle of View

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About the Orion 10mm

The Orion Sirius Plossl Eyepieces offers a wide 52° apparent field of view providing extremely sharp images of impressively high contrast. They're ideal for all types of telescopes: reflector, refractor and catadioptric. The Plossl 4-element design is renowned for its outstanding performance and has become the standard by which all other eyepieces are judged.

The Sirius Plossl optical system is fully coated with magnesium fluoride on every air-to-glass surface. Lens edges are blackened to reduce scattering of stray light and maximize contrast. The lenses are mounted in black-anodized aluminum housings with 1.25"-diameter chrome-plated brass barrels for durability and precision fit. Each barrel is internally threaded to accept standard filters. The built-in rubber eyeguards enhance viewing by helping to block out ambient light and position the eye.

The 10mm is a great, moderately high power ocular for observing small planetary nebulas and globular star clusters, as well as for planetary probing when seeing conditions don't permit higher magnifications. A medium-power eyepiece, the 17mm is perfect for broad-field lunar observations, medium-sized star clusters and a wide range of nebular objects. For moderately low power scanning of open star clusters and viewing of extended nebulas and larger galaxies, the 25mm model excels.

Orion 10mm Includes

  • Orion Dust Caps
  • Orion 1 Year Limited Warranty

Orion 10mm Features

  • These 25mm, 17mm and 10mm eyepieces are ideal for all types of telescopes
  • Offer a 52 degree apparent field of view for clear, sharp images of impressively high contrast
  • Fully coated with magnesium fluoride on every air-to-glass surface
  • Lens edges are blackened to reduce scattering of stray light and maximize contrast

Orion 10mm Specifications

Eyepieces included 10mm, 17mm & 25mm
Field of view 52° apparent
Barrels 1.25" diameter chrome-plated brass
Design 4-element
Filter threads Yes
Parfocal No
Barrel security recess No
Blackened lens edges Yes
Rubber eyeguards Yes
Body material Aluminum
Warranty Orion 1 year limited warranty
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