Orion 52055 Pentaprism 1.25-inch Telescope Diagonal Mirror, Black

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Orion 52055 Pentaprism 1.25-inch Telescope Diagonal Mirror, Black

Regular Price: US$325.00

Special Price US$264.99

Availability: In stock

Supplier: Orion

Category: Electronics Camera & Photo Accessories Telescope & Microscope Accessories Telescope Accessories Diagonals

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The Orion pentaprism Degree diagonal is a non-inverting non-reversing 1 25" diagonal with a Degree viewing angle Unlike a star diagonal it does not produce a mirror-reversed image which can make navigation and referring to star Maps while observing with your telescope difficult But Unlike a correct-image diagonal there is no image degradation caused by the ridge line where prisms intersect which especially affects high-power viewing It is the only diagonal that can be used with the Orion premium linear binoviewer to render an upright non-mirror-reversed image through a telescope So we highly recommend it for viewing with the premium linear binoviewer especially for terrestrial applications for which a correctly oriented view is a must The pentaprism diagonal consists of a pentagonal-shaped prism 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 The pentaprism is housed in as aluminum body that features a non-marring 1 25" compression ring collar and a tapered 1 25" barrel that is threaded for filters The Orion pentaprism diagonal has an optical path length (back focus 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 While the pentaprism is the ideal diagonal to use with the premium linear binoviewer Note that it may not provide a correctly oriented view with other binoviewers Try this premium quality Orion pentaprism diagonal It's the "best and brightest" diagonal for the job!

With a generous clear Aperture of 29mm The pentaprism diagonal will not cause image igniting even when used with long focal length wide-field eyepieces. It features a 1 25" Non-marring compression ring Collar and a tapered barrel for secure attachment to a telescope. The pentaprism diagonal incorporates a pentagonal-shaped prism of BK-7 glass that is multi-coated and dielectric coated for maximum Light Transmission. The Orion pentaprism diagonal is ideal for use with the Orion Premium linear binoviewer because the combination renders an upright non-mirror-reversed image.

Focal Length Description: 120 millimeters. Lens Coating Description: Multi-Coated. Item Weight: 0.56 Pounds. Finderscope: Reflex. Focus Type: Manual Focus. Objective Lens Diameter: 29 months. Eye Piece Lens Description: Wide Field. Model Name: Pentaprism. Brand: Orion. Manufacturer: Optronic Technologies, Inc. Date First Available: November 1, 2003. Best Sellers Rank: #34 in Telescope Diagonals. Customer Reviews: 4.4 out of 5 stars 4 ratings 4.4 out of 5 stars. Item model number: 52055. : B07C85Z8V4. Item Weight: 9 ounces. Product Dimensions: 6.5 x 6 x 4.5 inches.