DURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL
William Optics
DURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL is backordered and will ship as soon as it is back in stock.
The William Optics Dura-Bright 2" diagonal is a high quality 90° mirror-type star diagonal with dielectric coatings for 99% reflectivity, giving ultra-high contrast and resolution for planetary, lunar and binary star observation.
The high precision 12mm-thick mirror substrate is polished to 1/12th lambda accuracy for optimal image quality. Meticulously CNC-machined with internal anti-reflection baffling and carbon fibre side plates, the Dura-Bright 2" diagonal is an exceptionally well constructed piece of equipment.
The compression rings on both diagonal and the included 2" - 1.25" adapter prevent eyepiece barrels from marring. The large knurled thumbscrews are easy to operate when wearing gloves. The internal safety stop prevents 2" barrels from hitting the mirror.
The Dura-Bright 2" diagonal is threaded for 48mm (2") filters.
Specifications
| Barrel size |
2" |
|---|---|
| Angle |
90 degrees |
| Telescope connection | 2" barrel with M48 x 0.75 female thread |
| Eyepiece connection | 2", 1.25" |
| Weight | 630 g |
| SKU | WO-D-DIG2D-C-DB |
Customer Reviews
Bought this to go with a Zenithstar 81 and use it with a 1.25" Baader 8-24mm hyperion zoom eyepiece. I've nothing to compare this diagonal with but it works very nicely for me. Jupiter, Saturn, Moon - all crisp and clear through this combo (Bortle 6 skies).
