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1.25' Zenith Diagonal Dielectric Mirror for Refractor Astronomical Telescope 99% Reflection Accessories 90 Degree

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$39.99

$ 17 .99 $17.99

In Stock

About this item

  • Multi-layered dielectric coatings that produce 99-percent reflectivity for brighter, sharper images.
  • 1.25 inches nosepiece fits 1.25 inches telescopes; accepts standard 1.25 Inch filters; eyepieces; Barlow lenses and other accessories
  • Diagonal provides a comfortable 90-degree viewing orientation when observing the night sky through a refractor telescope
  • Brass compression ring; Built in brass ring and thumbscrew accessories avoid eyepiece to rotate during adjustments; effortless fixes more firmly and will not scratch your eyepieces barrels
  • Machined and anodized aluminum housing features machine-threaded baffles for optimized contrast



Product Description

SKYOPTIKST 1.25 inch high reflective dielectric film Star diagonal is made of aluminum alloy. The lens is a high-precision plane mirror with 1/10 wavelength error. The surface is coated with a dielectric film with a reflectivity of up to 99% to improve the performance of the mirror. The surface of the mirror tube has undergone black glossy oxidation, with a Chinese red side panel, which is aesthetically pleasing and of outstanding quality. The excellent quality of this flat reflector brings you more enjoyment when observing the sky, making your observation more convenient. The design of the eyepiece locking protection device ensures that the surface of the eyepiece is not damaged when the eyepiece is locked, and special treatment is carried out to eliminate stray light inside. In order to facilitate the observation of special celestial bodies by observers, this flat reflector is also designed with a filter interface for easy installation and unloading of filters.

Diagonal mirror

Brass protective ring

The design of the eyepiece locking protection device ensures that the eyepiece surface is not damaged when locked

Design threads for easy installation of M28 * 0.78 various 1.25 inch filters

It can facilitate users to observe various special celestial bodies.

The diagonal mirror is fully covered with matte velvet inside

Specifications:

1. Brand: SKYOPTIKST

2. Size: 1.25 inches

3. Coating: Dielectric

4. Reflectivity: 99%

5. Thread: 28.5 * 0.6

6. Material: Aluminum alloy

7. M4 set screw

8. Net weight: 125g/4.41oz


Walter Lewis
2025-08-26 13:08:04
High reflectivity, brighter than the diagonal that came with my scope
C.F.R.Junior
2025-03-21 11:11:57
It's a good dielectric diagonal.It is a better product than the cheaper diagonals offered in budget telescope kits such as some Celestron refractor models.The cost is reasonably low because only 31.8mm diameter accessories can be used.Based on my experiences this is an advantage because the mechanics are more stable considering the cost-effectiveness of the general workmanship.I am satisfied with the product
Keith E. Nordin
2024-12-17 13:18:56
SVBONY seems to be getting their act together. I had a really bad experience with a really defective telescope that I had to return to them. Then fight to get my money back because of Chinese Banking! The CCP's policies suck!
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