---
product_id: 1158008
title: "Celestron 94112-A Erect Image Diagonal Prism for Refractor and Schmidt Cassegrain Telescopes, Black"
brand: "celestron"
price: "€ 77.75"
currency: EUR
in_stock: true
reviews_count: 8
category: "Celestron"
url: https://www.desertcart.com.cy/products/1158008-celestron-94112-a-erect-image-diagonal-prism-for-refractor-schmidt
store_origin: CY
region: Cyprus
---

# StarBright XLT coating 1.25” eyepiece compatible 45° erect image prism Celestron 94112-A Erect Image Diagonal Prism for Refractor and Schmidt Cassegrain Telescopes, Black

**Brand:** celestron
**Price:** € 77.75
**Availability:** ✅ In Stock

## Summary

> 🔭 See the world right side up — don’t miss a moment of clarity!

## Quick Answers

- **What is this?** Celestron 94112-A Erect Image Diagonal Prism for Refractor and Schmidt Cassegrain Telescopes, Black by celestron
- **How much does it cost?** € 77.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/1158008-celestron-94112-a-erect-image-diagonal-prism-for-refractor-schmidt)

## Best For

- celestron enthusiasts

## Why This Product

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

## Key Features

- • **Universal 1.25” Fit:** Seamlessly inserts into standard focusers and visual backs, compatible with most refractor and Schmidt-Cassegrain telescopes.
- • **Comfort-Driven 45° Angle:** Ergonomic prism design ensures comfortable viewing during extended daytime sessions.
- • **Trusted Celestron Quality:** Backed by a two-year limited warranty and top-rated by thousands of enthusiasts.
- • **Crystal-Clear Daytime Views:** Transforms your telescope for flawless terrestrial observation with right-side-up, correctly oriented images.
- • **Premium StarBright XLT Coating:** Enhances light transmission and reduces glare for sharper, brighter images.

## Overview

The Celestron 94112-A 45° Erect Image Diagonal prism is a must-have accessory for refractor and Schmidt-Cassegrain telescopes, delivering correctly oriented, right-side-up images ideal for terrestrial daytime viewing. Featuring a 1.25” universal fit and StarBright XLT coatings, it enhances clarity and comfort, making it perfect for birdwatching, boating, and nature observation. Trusted by pros and backed by a two-year warranty, it transforms your telescope into a versatile daytime explorer.

## Description

Did you know that most telescopes work well for daytime viewing as well as for astronomy? If you have a refractor or a catadioptric telescope (the Schmidt-Cassegrain is the most popular example), and you would like to use it for terrestrial observations, the most useful additional accessory you can buy is an erect-image diagonal.If you look through your telescope with the standard mirror or star diagonal installed, you will notice that objects may be either upside down, flipped so that you see a mirror image, or a combination of the two. This is fine for observations of celestial objects, but it can be a little confusing when you are trying to track a boat as it moves through the water, or an eagle as he flies towards his perch.Luckily, this is an easy problem to correct. Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Celestron 45º Erect Image Diagonal. Now, when you insert an eyepiece, objects will be right side up and left-to-right correct. The 45º angle of this Amici prism diagonal is very comfortable for daytime observations, where the telescope is often in a horizontal position.Please Note: Adding an erect-image diagonal to a Newtonian reflector will not result in images that are right side up and left-to-right correct. The optical design of a Newtonian will always produce images that are rotationally off in orientation. This does not mean that you can’t use a Newtonian reflector during the day, it just means that you have to get used to objects oriented in unrealistic positions.

Review: Good for daytime, Len's flares at night - This is the second 45° diagonal I've ordered and I ordered this Celestron because it had special coatings on it, the other one I bought (neewer) does the same thing they both have lens flare problems at night. But these are designed to be used for terrestrial viewing during the day so you don't have that problem, i also tried it on the moon and it worked fine in my C8. But it has no brass sleeve just the the locking screw which will scratch the eyepiece barrel if you're not careful.
Review: Great clarity - very happy! - This fit my Celestron telescope perfectly, now I could use it for birdwatching or any other terrestrial viewing. Works great, fits great. I’m very very pleased highly recommend.

## Features

- A great accessory for daytime terrestrial viewing with your telescope
- This 1.25” diagonal produces right side up and left-to-right correct images when used with refractors and catadioptric (Schmidt-Cassegrain) telescopes
- Inserts into 1.25” focusers or visual backs; accepts standard 1.25” eyepieces
- Package Weight: 136.08 grams

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0000665V4 |
| Additional Features | Corrects image orientation for daytime terrestrial viewing |
| Best Sellers Rank | #5 in Telescope Diagonals #58 in Telescope Refractors |
| Brand | Celestron |
| Built-In Media | 45-Degree Erect Image Diagonal |
| Coating | StarBright XLT |
| Compatible Devices | Eyepiece |
| Customer Reviews | 4.3 out of 5 stars 432 Reviews |
| Exit Pupil Diameter | 1.27 Millimeters |
| Eye Piece Lens Description | Prism |
| Field Of View | 0.82 Degrees |
| Finderscope | Reflex |
| Focal Length Description | 914.4 millimeters |
| Focus Type | Manual Focus |
| Global Trade Identification Number | 00050234941129 |
| Item Dimensions D x W x H | 4.53"D x 2.95"W x 2.36"H |
| Manufacturer | Celestron |
| Manufacturer Part Number | 94112-A-CGL |
| Model Name | Celestron 45-Degree Erect Diagonal (1.25-Inch) |
| Model Number | 94112-A-CGL |
| Mount | Tripod Mount |
| Power Source | Manual Operation |
| Product Dimensions | 4.53"D x 2.95"W x 2.36"H |
| Telescope Mount Description | Tripod Mount |
| UPC | 050234941129 |
| Warranty Description | TWO-YEAR LIMITED WARRANTY |
| Zoom Ratio | 36 |

## Product Details

- **Brand:** Celestron
- **Model Name:** Celestron 45-Degree Erect Diagonal (1.25-Inch)
- **Eye Piece Lens Description:** Prism
- **Objective Lens Diameter:** 1.25 Inches
- **Telescope Mount Description:** Tripod Mount
- **Product Dimensions:** 4.53"D x 2.95"W x 2.36"H
- **Focus Type:** Manual Focus
- **Power Source:** Manual Operation
- **Finderscope:** Reflex
- **Compatible Devices:** Eyepiece

## Images

![Celestron 94112-A Erect Image Diagonal Prism for Refractor and Schmidt Cassegrain Telescopes, Black - Image 1](https://m.media-amazon.com/images/I/51uEfdOROAL.jpg)
![Celestron 94112-A Erect Image Diagonal Prism for Refractor and Schmidt Cassegrain Telescopes, Black - Image 2](https://m.media-amazon.com/images/I/51U7Q2rMpYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good for daytime, Len's flares at night
*by C***. on June 3, 2025*

This is the second 45° diagonal I've ordered and I ordered this Celestron because it had special coatings on it, the other one I bought (neewer) does the same thing they both have lens flare problems at night. But these are designed to be used for terrestrial viewing during the day so you don't have that problem, i also tried it on the moon and it worked fine in my C8. But it has no brass sleeve just the the locking screw which will scratch the eyepiece barrel if you're not careful.

### ⭐⭐⭐⭐⭐ Great clarity - very happy!
*by F***Y on September 11, 2025*

This fit my Celestron telescope perfectly, now I could use it for birdwatching or any other terrestrial viewing. Works great, fits great. I’m very very pleased highly recommend.

### ⭐⭐⭐⭐⭐ Good addition to NexStar 127SLT if you want to look at terrestrial objects.
*by D***L on March 1, 2025*

I wanted to look at terrestrial objects and got tired of inverted and reversed images. The fit an finish are consistent and the optic itself is suitable for looking at distant objects on the ground. The 45 degree angle is a lot more comfortable than the 90 degree for ground objects. I'm currently using it to observe Space X operations in Texas up to a mile away. I can see individual rivets and tiles on the Starship. This has expanded the utility of my Celestron NexStar 127SLT. Well worth the money.

## Frequently Bought Together

- Celestron – 45-Degree Erect Image Diagonal – 1.25' – Use Your Astronomical Telescope for Daytime Terrestrial Viewing – Right-Side-Up & Correctly Oriented Images in Refractors & Schmidt-Cassegrains
- Celestron – Zoom Eyepiece for Telescope – Versatile 8mm-24mm Zoom for Low Power and High Power Viewing – Works with Any Telescope That Accepts 1.25" Eyepieces
- Celestron – Telescope Moon Filter – Eyepiece Accessory – Reduces Moon Glare and Enhances Lunar Crater Details – Great for Full Moon Observing – Works with Any Telescope That Accepts 1.25" Eyepieces

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-27*