---
product_id: 219224677
title: "2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography"
brand: "astromania"
price: "VT30011"
currency: VUV
in_stock: true
reviews_count: 3
url: https://www.desertcart.vu/products/219224677-2-inch-star-diagonal-90-degree-mirror-with-93-reflectivity
store_origin: VU
region: Vanuatu
---

# 2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography

**Brand:** astromania
**Price:** VT30011
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography by astromania
- **How much does it cost?** VT30011 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/219224677-2-inch-star-diagonal-90-degree-mirror-with-93-reflectivity)

## Best For

- astromania enthusiasts

## Why This Product

- Trusted astromania brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Astromania 2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography

## Features

- About this item
- It fits all rear cells of Schmidt-Cassegrain telescopes equipped with a big, 2" focuser and can use with refractor telescopes with SCT adapter which you can find in our store(NOT INCLUDE).     The 2" diagonal features dielectric coatings with 93% reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images.     Allows you to take advantage of the wider field of view provided by two inch eyepieces. Dielectric coatings are more durable than regular or enhanced aluminum coatings, so you will enjoy years of excellent performance from this product.     Associated with 90°mirror diagonals, which let you view objects that are at a 90°angle from the direction the telescope is pointing.     Improved attachment design features a brass clamping ring which does not mar, and provides a more secure connection.

## Images

![2 Inch Star Diagonal 90-Degree Mirror with 93% Reflectivity Dielectric Coatings - Fully Metal for Refracting Telescope Eyepiece Lens for Astronomical Visual Astrophotography - Image 1](https://m.media-amazon.com/images/I/615eAux8jzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Mud in my eye?  NOT
  

*by K***Y on Reviewed in the United States on November 24, 2018*

This diagonal works great.

### ⭐⭐⭐⭐⭐ 







  
  
    Nice Diagonal for the Price
  

*by S***Y on Reviewed in the United States on July 15, 2019*

+>Very nice upgrade from the 1.25" Celestron diagonal that I was using. Huge difference in brightness, fov, and  clarity.>Easily gets at least 150x from a 4" refractor.  Bands of Jupiter, defined rings around Saturn, better double star  separation and glob clusters, etc.>Edge to edge clarity with no noticeable distortions or abberations.>Sturdy and feels solidly built.>Adapter ring included. Good thumbscrews.>Price.->Fogs up when the humidity is higher than 60-70%. Removing the eyepiece and letting it breath for a  few seconds usually clears it up though.

### ⭐⭐⭐⭐⭐ 







  
  
    Looks good, particularly for the price
  

*by R***D on Reviewed in the United States on April 7, 2022*

Inexpensive 2" mirror diagonal that does not include a 1.25" eyepiece adapter.  Has a cutout in the eyepiece holder for a low profile eyepiece adapter for 1.25" eyepieces.  Clear aperture at the eyepiece holder is 44.5mm.  The nose piece and eyepiece holder both have the same threading so are interchangeable.  Solid all metal construction, except for the mirror, particularly considering the price.

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**Shop now:** [https://www.desertcart.vu/products/219224677-2-inch-star-diagonal-90-degree-mirror-with-93-reflectivity](https://www.desertcart.vu/products/219224677-2-inch-star-diagonal-90-degree-mirror-with-93-reflectivity)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-17*