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diagonals & adapters

William Optics NEW Super Quality 1.25" 90° Erect Prism (Upright-Correct) - D-EP90-125II

William Optics   ——   SKU: WIL-D-EP90-125II
$109.00 CAD
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William Optics NEW Super Quality 1.25" 90° Erect Prism - Upright-Correct Image

This William Optics 1.25" 90° erecting prism will be a joy to be used with that nice premium refractor of yours! It will be perfect for daytime observations too, because of its Upright-Correct Image. It is internally threaded and blackened to reduce stray light reflections.

This 90° William Optics NEW, Super Quality, 1.25" Erect Image Prism - Star Diagonal with an Upright-Correct Image uses an image-erecting BAK4 prism with an anti-reflection coating. This is a very high accuracy and high reflectivity prism optic. This Super Quality 1.25" 90° Erect Image Prism from William Optics also has a new feature which you will appreciate - it has a Helical Focusing feature on the top barrel which allows you to make fine-focus adjustments. Finally, it is threaded for accepting most 1.25" filters.

This William Optics 1.25", 90° erecting prism Star Diagonal is make from highest quality aluminum, black anodized, with a smooth exterior finish.

Specifications:

Product SKU: D-EP90-125II
Barrel Size: For 1.25" Focuser receivers
Material: Aluminum, Black Anodized
Form/Fit: 1.25" Star Diagonal (Prism)
Function: A Prism Star Diagonal with Push-In Barrel, 1.25"
Image Orientation: Correct (Erect) Image
Added Feature: Helical Focusing Barrel
Inside Diameter: Threaded for 1.25" filters
Weight: 180 grams
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