William Optics 1.25" 99% Dielectric Dura Bright Star Mirror Diagonal for Star71 Telescope
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Dedicated 1.25" dielectirc mirror diagonal made especially for use with William Optics' latest Star71-II 71mm f/4.9 apo imaging refractor telescope with M63 threads. Allows you to use this scope visually with any 1.25" eyepiece. Please note that this item will not work with some Gen I Star71 telescopes that have a slightly larger M65 thread.
This 90° 1.25" mirror-type star diagonal has a Dura-Bright mirror with 1/10 or better wave surface accuracy and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. The diagonal body features a dedicated M63x1 male thread adapter on the telescope side for direct coupling with the M63 female thread on the end of the focuser tube of the Star71-II telescope.
The WO 1.25" Dura-Bright Diagonal for the Star71 telescope was designed with several unique features to provide optimum performance and years of use.
Top-Notch Performance and brightness
- Dielectric coating allows 99% reflectivity.
- High precision mirror substrate flat for optimal image stability.
- Polished to 1/10th wave or better accuracy.
- Accurate design guarantees constant alignment. No further alignment needed.
Meticulous Craftsmanship
- Lock screw for eyepiece/adapter.
- Diagonal is rotatable when attached to telescope.
Strikingly Beautiful
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal anti-reflection baffling for highest contrast.
Other Information
- Country of Manufacture: Taiwan
Dedicated 1.25" dielectirc mirror diagonal made especially for use with William Optics' latest Star71-II 71mm f/4.9 apo imaging refractor telescope with M63 threads. Allows you to use this scope visually with any 1.25" eyepiece. Please note that this item will not work with some Gen I Star71 telescopes that have a slightly larger M65 thread.
This 90° 1.25" mirror-type star diagonal has a Dura-Bright mirror with 1/10 or better wave surface accuracy and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. The diagonal body features a dedicated M63x1 male thread adapter on the telescope side for direct coupling with the M63 female thread on the end of the focuser tube of the Star71-II telescope.
The WO 1.25" Dura-Bright Diagonal for the Star71 telescope was designed with several unique features to provide optimum performance and years of use.
Top-Notch Performance and brightness
- Dielectric coating allows 99% reflectivity.
- High precision mirror substrate flat for optimal image stability.
- Polished to 1/10th wave or better accuracy.
- Accurate design guarantees constant alignment. No further alignment needed.
Meticulous Craftsmanship
- Lock screw for eyepiece/adapter.
- Diagonal is rotatable when attached to telescope.
Strikingly Beautiful
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal anti-reflection baffling for highest contrast.
Dedicated 1.25" dielectirc mirror diagonal made especially for use with William Optics' latest Star71-II 71mm f/4.9 apo imaging refractor telescope with M63 threads. Allows you to use this scope visually with any 1.25" eyepiece. Please note that this item will not work with some Gen I Star71 telescopes that have a slightly larger M65 thread.
This 90° 1.25" mirror-type star diagonal has a Dura-Bright mirror with 1/10 or better wave surface accuracy and dielectric mirror coatings for 99% reflectivity which provides higher contrast and resolution during critical planetary, lunar and binary star observations. The diagonal body features a dedicated M63x1 male thread adapter on the telescope side for direct coupling with the M63 female thread on the end of the focuser tube of the Star71-II telescope.
The WO 1.25" Dura-Bright Diagonal for the Star71 telescope was designed with several unique features to provide optimum performance and years of use.
Top-Notch Performance and brightness
- Dielectric coating allows 99% reflectivity.
- High precision mirror substrate flat for optimal image stability.
- Polished to 1/10th wave or better accuracy.
- Accurate design guarantees constant alignment. No further alignment needed.
Meticulous Craftsmanship
- Lock screw for eyepiece/adapter.
- Diagonal is rotatable when attached to telescope.
Strikingly Beautiful
- Patented, elegant design.
- High-quality machining out of the best aluminum.
- Internal anti-reflection baffling for highest contrast.
Other Information
- Country of Manufacture: Taiwan