Astromania 2" 90-Degree 99% Enhanced Dielectric Diagonal Mirror - Provide a Much Brighter Image Than with an Ordinary Star Diagonal

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Astromania 2" 90-Degree 99% Enhanced Dielectric Diagonal Mirror - Provide a Much Brighter Image Than with an Ordinary Star Diagonal

Regular Price: US$289.99

Special Price US$259.99

Availability: In stock

Supplier: Astromania

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

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Astromania 2" 90-degree 99% Enhanced Dielectric Diagonal Mirror uses multi-layered dielectric coatings in order to ensure a maximum reflection of 99% with the highest contrast and optimal sharpness. The residual stress in the plane mirror which can occur with the dielectric vapour deposition process is ruled out here. This slip fit 2-inch diagonal with 1.25-inch adapter, plus the Schmidt Cassegrain thread to 2-inch accessory adapter and other Schmidt Cassegrain rear thread s crew-on systems, is compatible with both slip-fit and s crew-on mounting systems. The optics are made with Pyrex glass and comes with dielectric coatings for the most light transmission possible.

Beside eyepieces, a star diagonal is one of the most important accessories. What is the use of a good objective or the best eyepiece if the star diagonal is inferiorWe recommend the Astromania 2" 90-degree 99% Enhanced Dielectric Diagonal Mirror to everyone, including those working with high end instruments. The star diagonal permits full illumination of 2" wide field eyepieces.

Adapter 2"-1.25" with Brass Clamp Ring for Telescope

Both 1.25-inch and 2-inch eyepieces can be used to better meet customer needs.
This slip fit 2-inch diagonal with 1.25-inch adapter, plus the Schmidt Cassegrain thread to 2-inch accessory adapter and other Schmidt Cassegrain rear thread s crew-on systems, is compatible with both slip-fit and s crew-on mounting systems.

Multi-layered Dielectric Coatings & 99% Reflectivity

Multi-layered dielectric coatings that order to ensure a maximum reflection of 99% with the highest contrast and optimal sharpness for brighter, sharper images. Comes with dielectric coatings for the most light transmission possible. The residual stress in the plane mirror which can occur with the dielectric vapour deposition process is ruled out here.

90° Comfortable Angle

View the object at 90 degrees from the direction the telescope is pointing. This makes observations quite comfortable when the telescope is at or near the zenith.


A Brass Clamping Ring Improved attachment design features a brass clamping ring which does not mar, and provides a more secure connection. 2" - 1.25" reducing sleeve with brass compression ring, non-marring compression safety secures the eyepieces.	Thread for Eliminate Light Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed, the edge details of the image are clearer.	Metal Construction The all body is metal, make the product more durable. A superb diagonal offering excellent mechanical and optical quality.

Main Features:

1	View of angle: 90-degree
2	Multi-layered dielectric coatings
3	99% reflection
4	2" - 1.25" reducing sleeve with brass compression ring
5	The optics are made with Pyrex glass


	Astromania 2" 90-degree diagonal 99%	Astromania 2" 45-degree erecting prism diagonal for telescope	Astromania 2" 90-degree mirror diagonal with 93% reflectivity	1.25" 90-degree diagonal mirror	Astromania 2" SCT 90-degree mirror diagonal with 93% reflectivity
Connection (to the telescope)	2"	2"	2"	1.25"	2"
Viewing posture	90°	45°	90°	90°	90°
Coating of optical system	Dielectric	Fully-multi-coated	Dielectric	Fully	Dielectric
Correction of vertically reversed image	✓	✓	-	-	-
Correction of horizontally reversed image	-	✓	-	-	-
Ring clamp	✓	✓	✓	-	✓
Filter thread	✓	✓	✓	✓	✓
Type of build	Diagonal mirror	Amici prism	Diagonal mirror	Diagonal mirror	Diagonal mirror
Type	Deviating optics	Deviating optics	Deviating optics	Deviating optics	Deviating optics
Other contents	Extension tube/2" to 1.25" Eyepiece Adapter	2" to 1.25" Eyepiece Adapter	-	-	SCT Adapter

Astromania Optics
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2" - 1.25" reducing sleeve with brass compression ring, non-marring compression safety secures the eyepieces. Suitable for refractors, Schmidt-Cassegrains, ACF, EdgeHD and Maksutov-Cassegrains. Comes with dielectric coatings for the most light transmission possible. Multi-layered dielectric coatings that produce 99-percent reflectivity for brighter, sharper images. 2" Diagonal Mirror with 99% reflection, optics are made with Pyrex glass.

Item Weight: 24.3 Ounces. Finderscope: Reflex. Objective Lens Diameter: 50 months. Eye Piece Lens Description: Wide Field. Brand: Astromania. Manufacturer: Astromania. Date First Available: October 12, 2016. Is Discontinued By Manufacturer: No. Best Sellers Rank: #10 in Telescope Diagonals. Customer Reviews: 5.0 out of 5 stars 2 ratings 5.0 out of 5 stars. Item model number: SKU_AM_DM29099. : B01M3P1S4B. Item Weight: 1.52 pounds. Product Dimensions: 2.2 x 2.2 x 1.18 inches.