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Orion 12.5mm Illuminated Reticle Plossl Eyepiece - 1.25"

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OR-8450
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  • Regular price $79.99

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DESCRIPTION

Orion 12.5mm Illuminated Reticle Plossl Eyepiece - 1.25"

The 12.5mm Orion Illuminated Plossl Telescope Eyepiece is great for accurate polar alignment. The 4-element Plossl design is also well suited for off-axis guiders, where light gathering is minimal. Fully multi-coated lenses, 4-deg apparent field. LED-illuminated double crossline reticle has adjustable focus and brightness. SR-44 batteries included. 1.25" diameter.

Orion 12.5mm Illuminated 1.25" Plossl Eyepiece Features

  • Four-element 12.5mm focal length 1.25" Plossl telescope eyepiece with an illuminated double crossline reticle
  • Excellent for accurate polar alignment, GoTo system alignment, IntelliScope system alignment, and acquiring and centering of guide stars for guided astrophotography pursuits
  • Fully multi-coated lenses provide bright views with a 4-degree apparent field of view
  • LED-illuminated double crossline reticle has adjustable focus and brightness
  • Illuminator requires SR-44 batteries (included)

SPECIFICATIONS

Dust Caps IncludedYes
Eye Guard IncludedYes
Eyepiece Apparent FOV40 degrees
Eyepiece Eye Relief5mm
Eyepiece Focal Length12.5mm
Eyepiece Special FeatureIlluminated
Field Stop10.4mm
Lens Elements & Groups4 elements
ManufacturerOrion
ModelOrion Illuminated
Optical DesignPlossl
Warranty1 Year Warranty

Customer Reviews

4 Based on 1 reviews
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S
01/01/2012
seigell

Great for Centering but...

The double cross reticle pattern is very useful for centering your scope during Star Alignment actions. But this eyepiece has a few issues, too... 1 The 40deg FOV is quite narrow, combined with the magnification of 12.5mm. This can be a challenge when moving from the wide field of a finderscope. 2 There is no eyecup, and the eyelens is nearly flush to the exterior. This means glare from any external sources must be shaded away with your hand - while also trying to use your hand-controller to center your scope. 3 Focusing the reticle is done by helical means of the eyelens element. As you twist this outward, it quickly begins to get rather loose and wiggly in its threads - and there is no stop before it comes lose in your hand. All that aside, once you have your target within the FOV, the illuminated thin-lined double-cross reticle makes it quite clear where to center your scope.