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Telescope accessories > Prisms & Diagonal mirrors > Diagonal mirrors > William Optics > William Optics 2" dielectric quartz star diagonal, 99% reflection
Product no.: 12921

2" dielectric quartz star diagonal, 99% reflection

$ 248.00 incl. VAT, plus shipping costs
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Product description

If what you are looking for is the highest achievable brightness, contrast and sharpness during critical observing with high-end instruments, then the Williams Optics 2", 90° dielectric mirror star diagonal is the right choice for you. A premium product at a discounted price!

Features:
Ultra high 99% dielectric reflectivity
Precision 1/10 lambda surface with 10mm thick mirror
2'' -1.25'' adapter with brass clamping ring
48mm inside diameter, threaded to fit a variety of filters
470g in weight
comes with free SCT thread adapter

Similar to illustration

Specifications

Capacity

Type
Diagonal mirror
Connection (to the telescope)
2"
Viewing posture
90°
Coating of optical system
dielectric
Surface reflection
99
Mirror holder material
Quartz
Surface accuracy
1/10

Special features

Correction of vertically reversed image
yes
Correction of horizontally reversed image
-
Ring clamp
yes
Filter thread
yes

General

Colour
black-silver
Weight (g)
470
William Optics 2" dielectric quartz star diagonal, 99% reflection

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