FREE SHIPPING

On Hundreds of Products details ›

CALL US TOLL FREE 800-266-9590

Orion 1.25" Pentaprism Diagonal - 52055

SKU: ORI-52055

This item is in stock and typically ships in 1 day or less.

free shipping free shipping

One of the many benefits to becoming a customer of High Point Scientific is that you receive Unlimited Tech Support on all of the products you purchase from us.  We understand that many of our products are technical in nature and require support.  Rest assured that our team of Telescope and Telescope Accessory experts will be standing by (800.266.9590) to support you for as long as you own one of our products!  

Our price: $199.99
Bread Checkout
 

Orion 1.25" Pentaprism Diagonal



Orion's 1.25" Pentaprism Diagonal features a unique pentagonal-shaped prism, creating a correct image with unparalleled clarity. This makes navigation simple and easy, particularly when using star maps. Most correct-image diagonals cause image degradation from the ridge line where prisms intersect. The Orion Pentaprism Diagonal solves this problem with a sharp, true non-mirror-reversed image. Even at high-power viewing, the diagonal maintains a clear image throughout.



As its name implies, the Pentaprism diagonal consists of a pentagonal-shaped prism, which is made of BK-7 glass that is multi-coated on its two transmitting surfaces and dielectric coated on its two reflective surfaces, for maximum light transmission to the eyepiece. The pentaprism is housed in a black-anodized aluminum body that features a non-marring 1.25" compression ring collar with a large knurled thumbscrew, and a tapered 1.25" barrel that is threaded for use of filters.



The Orion Pentaprism diagonal has an optical path length (backfocus requirement) of 120mm and a generous clear aperture of 29mm. One nice feature of the Pentaprism diagonal is that it causes no vignetting, even when used with long focal length, wide-angle eyepieces. When used in combination with just an eyepiece, the Pentaprism diagonal will render an upside-down image, but not mirror-reversed as you get with a standard star diagonal. That can be advantageous for telescopic viewing with star charts since you need only rotate the star chart to match the view in the eyepiece. A mirror-reversed eyepiece view, on the other hand, requires some mental gymnastics when referring to a star map! While the Pentaprism is the ideal diagonal to use with the Orion Premium Linear BinoViewer, note that it may not provide a correctly oriented view with other binoviewers, which unlike the Premium Linear BinoViewer typically do not incorporate an image erecting lens system.

Description
Description

Orion 1.25" Pentaprism Diagonal

Orion's 1.25" Pentaprism Diagonal features a unique pentagonal-shaped prism, creating a correct image with unparalleled clarity. This makes navigation simple and easy, particularly when using star maps. Most correct-image diagonals cause image degradation from the ridge line where prisms intersect. The Orion Pentaprism Diagonal solves this problem with a sharp, true non-mirror-reversed image. Even at high-power viewing, the diagonal maintains a clear image throughout.

As its name implies, the Pentaprism diagonal consists of a pentagonal-shaped prism, which is made of BK-7 glass that is multi-coated on its two transmitting surfaces and dielectric coated on its two reflective surfaces, for maximum light transmission to the eyepiece. The pentaprism is housed in a black-anodized aluminum body that features a non-marring 1.25" compression ring collar with a large knurled thumbscrew, and a tapered 1.25" barrel that is threaded for use of filters.

The Orion Pentaprism diagonal has an optical path length (backfocus requirement) of 120mm and a generous clear aperture of 29mm. One nice feature of the Pentaprism diagonal is that it causes no vignetting, even when used with long focal length, wide-angle eyepieces. When used in combination with just an eyepiece, the Pentaprism diagonal will render an upside-down image, but not mirror-reversed as you get with a standard star diagonal. That can be advantageous for telescopic viewing with star charts since you need only rotate the star chart to match the view in the eyepiece. A mirror-reversed eyepiece view, on the other hand, requires some mental gymnastics when referring to a star map! While the Pentaprism is the ideal diagonal to use with the Orion Premium Linear BinoViewer, note that it may not provide a correctly oriented view with other binoviewers, which unlike the Premium Linear BinoViewer typically do not incorporate an image erecting lens system.

Specifications
Specifications
Model Number 52055
Diagonal Type Correct/Erect Image
Diagonal Size - Telescope Side 1.25" Barrel
Diagonal Size - Eyepiece Side 1.25" Barrel
Warranty Orion Limited
What's in the Box?
What's in the Box?
  • Pentaprism Diagonal
  • Dust Caps
Our Customer Commitment
  • Fast Shipping, Same or Next Day: You made the commitment to purchase, now you want that new item fast, we get it! At High Point all in stock orders ship within 24 hours, pending internal credit card approval.Read more ...
  • Unlimited Tech Support Forever: One of the many perks of being a High Point customer is that you get access to our tech support team forever! We are astronomers at heart and truly enjoy helping fellow amateurs achieve success in the field! Read more ...
  • 30 Day Return Policy: Ordered the wrong product? Don't worry, we'll take the majority of our products back within 30 days of the purchase date.We want to get you into the observing setup that bests fits your needs. Read more ...
  • Guaranteed Price Match: Call or email us if you find a better price on a product! Provide a link for our team to confirm the price and within a matter of seconds you'll have a price match providing the re-seller is within the USA and authorized by the manufacturer to sell the product of interest. Read more ...
  • We're Your Connection To The Manufacturer: In the event there is a warranty issue with a product purchased from High Point, we will serve as the liaison between you and the Manufacturer. The net result is faster, more attentive service from the Manufacturer and an enhanced customer experience. Read more ...

Please wait...