---
product_id: 48391071
title: "Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes"
brand: "celestron"
price: "119.29 OMR"
currency: OMR
in_stock: true
reviews_count: 13
category: "Celestron"
url: https://www.desertcart.com.om/products/48391071-celestron-94175-focal-reducer-and-field-corrector-imaging-accessory-reduces
store_origin: OM
region: Oman
---

# Expands field of view for deep sky & astrophotography 37% focal length & f/ratio reduction Universal accessory compatibility & easy install Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes

**Brand:** celestron
**Price:** 119.29 OMR
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock the cosmos: Twice the telescope, zero extra bulk!

## Quick Answers

- **What is this?** Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes by celestron
- **How much does it cost?** 119.29 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/48391071-celestron-94175-focal-reducer-and-field-corrector-imaging-accessory-reduces)

## 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

- • **Seamless Accessory Integration:** Thread-on design works flawlessly with T-adapters, star diagonals, off-axis guiders, and more—no compromises.
- • **Double Your Telescope’s Power:** Transforms your f/10 Schmidt-Cassegrain into a fast f/6.3 for versatile lunar, planetary, and deep sky viewing.
- • **Wider, Brighter Views Instantly:** Enjoy a 37% wider field and faster exposures—perfect for capturing nebulae, star clusters, and dimmer celestial objects.
- • **Optimized for Low Light & Digiscoping:** Faster f/ratio lets you shoot in dim conditions with maximum light transmission and near full-field illumination.
- • **Precision Engineering for Crisp Images:** Fully multi-coated lens with glare-threaded, blackened internal surfaces ensures high contrast and minimal distortion.

## Overview

The Celestron 94175 Focal Reducer & Field Corrector is a precision accessory that reduces your Schmidt-Cassegrain telescope’s focal length and f/ratio by 37%, converting a slow f/10 scope into a fast f/6.3 instrument. This upgrade widens your field of view, brightens images for astrophotography and deep sky observation, and maintains compatibility with all standard telescope accessories. Easy to install and optimized for both celestial and terrestrial digiscoping, it enhances light transmission and image contrast for a superior viewing experience.

## Description

Product Description Imagine having two telescopes in one — a long focal length instrument for lunar and planetary work and a short focal length scope for deep sky observing and astrophotography. With the Celestron Reducer/Corrector Lens, that’s precisely what you get. Explicitly designed for Celestron Schmidt-Cassegrain telescopes, this lens reduces your telescope’s focal length and f/ ratio by 37%, turning your long focal length telescope into a fast, short focal length instrument. A f/10 focal ratio now achieves a f/6.3, while an f/11 focal ratio now achieves a f/7. For visual use, this means you get lower power with the same eyepiece and a wider field of view. Photographically you also get a wider field and much shorter exposures. The Reducer/Corrector is easy to install by threading the unit onto the rear cell of your Schmidt-Cassegrain telescope (or the reducer plate of the C11 and C14). Once installed, you can add accessories like T-Adapters, 1.25” Visual Back, Star Diagonal, or Off-Axis Guider. The Reducer/Corrector can also be used for terrestrial digiscoping. The faster f/ratio allows you to use slower film or shoot in lower light level situations and still properly expose your subject. This fully multi-coated lens provides maximum light transmission with near full-field illumination. The internal surfaces are blackened and glare-threaded to provide the highest contrast. The lens has a knurled surface, providing a gripping surface for threading/unthreading. Box Contains Celestron Reducer - Corrector

Review: Great for any observer's "tool box". Brighter. Wider Angle - I have Celestron C8, this has a focal ratio of F/10. You don't necessarily need to know what that means but Astrophotographers would describe this as a "slow" ratio. Great for planetary obsevation. For nebulae, star clusters etc, still a great all-rounder, but some nebulae are quite large and/or diffuse. The focal reducer gives F/6.3. (faster). This means a wider and brighter field, though magnification can be applied to it, as normal. The Pleiades are almost all available in a low powered eyepiece, the moon is fully observable. When I went comet hunting, it gave me a better all-around view, before zooming in for the Nucleus and Coma. This may be classed as a luxury item, but it Does enrich the brightness and gives wider angle vistas. There are comments that it flattens the field. This means that at the margins of the view, in an SCT, the stellar points of light, can become slightly elongated. This is corrected with this lens. A good purchase for me, I would recomend, a good astronomer's tool, gives options. Is easy to add and take off the Telescope tube, in low light, thanks to the solid/well spaced screw thread.
Review: Essential… - A must have for anyone with a scope. You don’t realise how much you need it until you have it.

## Features

- LIKE HAVING TWO TELESCOPES IN ONE: Your long focal length Schmidt-Cassegrain is suited to lunar and planetary work, add the reducer corrector and you have a short focal length telescope for deep sky observing and astrophotography
- REDUCES FOCAL LENGTH AND F/RATIO BY 37%: Simply thread the reducer onto your telescope's rear cell and an f/10 Schmidt-Cassegrain becomes f/6.3 or an f/11 instrument becomes f/7
- COMPATIBLE WITH ALL YOUR ACCESSORIES: Once the reducer is installed, you can add accessories like a T-Adapter, visual back, star diagonal or off-axis guider
- FOR TERRESTRIAL DIGISCOPING: The faster f/ratio allows you to shoot in dimmer lighting conditions and still properly expose your subject, this fully multi-coated lens provides maximum light transmission with near full-field illumination
- THREAD THE UNIT ONTO THE REAR CELL OF YOUR SCHMIDT-CASSEGRAIN TELESCOPE (OR THE REDUCER PLATE OF THE C11 AND C14): Easy to install

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00009XVHZ |
| Best Sellers Rank | 225 in Telescope Accessories |
| Brand | Celestron |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (687) |
| Date First Available | 6 Aug. 2012 |
| Focus type | Manual Focus |
| Guaranteed software updates until | unknown |
| Included components | Reducer - Corrector |
| Item Weight | 150 Grams |
| Item model number | 94175 |
| Min Focal Length | 20 Millimeters |
| Model year | 2012 |
| Objective Lens Diameter | 200 Millimetres |
| Package Dimensions L x W x H | 7.1 x 6.5 x 4.9 centimetres |
| Package Weight | 0.15 Kilograms |
| Part number | 94175 |
| Product Dimensions L x W x H | 5.1 x 5.1 x 5.1 centimetres |
| Style | Corrector |
| Telescope Mount Description | Equatorial Mount |

## Product Details

- **Brand:** Celestron
- **Eye piece lens description:** Plossl
- **Finderscope:** Reflex
- **Focus type:** Manual Focus
- **Model name:** 94175
- **Objective lens diameter:** 200 Millimetres
- **Optical tube length:** 105 Millimetres
- **Power source:** Not Obtainable
- **Product dimensions:** 5.1D x 5.1W x 5.1H centimetres
- **Telescope mount description:** Equatorial Mount

## Images

![Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes - Image 1](https://m.media-amazon.com/images/I/21xqFBUfSjL.jpg)
![Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes - Image 2](https://m.media-amazon.com/images/I/5165OQE0RRL.jpg)
![Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes - Image 3](https://m.media-amazon.com/images/I/519X+yzPqPL.jpg)
![Celestron 94175 Focal Reducer & Field Corrector Imaging Accessory, Reduces Focal Length & Ratio 37% – f/10 to f/6.3. For Schmidt-Cassegrain Telescopes - Image 4](https://m.media-amazon.com/images/I/51lE9ezskBL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for any observer's "tool box". Brighter. Wider Angle
*by A***. on 20 March 2025*

I have Celestron C8, this has a focal ratio of F/10. You don't necessarily need to know what that means but Astrophotographers would describe this as a "slow" ratio. Great for planetary obsevation. For nebulae, star clusters etc, still a great all-rounder, but some nebulae are quite large and/or diffuse. The focal reducer gives F/6.3. (faster). This means a wider and brighter field, though magnification can be applied to it, as normal. The Pleiades are almost all available in a low powered eyepiece, the moon is fully observable. When I went comet hunting, it gave me a better all-around view, before zooming in for the Nucleus and Coma. This may be classed as a luxury item, but it Does enrich the brightness and gives wider angle vistas. There are comments that it flattens the field. This means that at the margins of the view, in an SCT, the stellar points of light, can become slightly elongated. This is corrected with this lens. A good purchase for me, I would recomend, a good astronomer's tool, gives options. Is easy to add and take off the Telescope tube, in low light, thanks to the solid/well spaced screw thread.

### ⭐⭐⭐⭐⭐ Essential…
*by A***N on 23 January 2023*

A must have for anyone with a scope. You don’t realise how much you need it until you have it.

### ⭐⭐⭐⭐⭐ Makes the telescope much more versatile
*by A***R on 9 March 2024*

Improves the field of view of my 8SE, allowing decent photography of larger DSOs (particularly M42), when using a large sensor (APS-C), stars toward the edge are much smaller, rounder and more point like, but not perfect, there is also some strong vignetting, but this can be dealt with using calibration frames.

## Frequently Bought Together

- Celestron – Focal Reducer & Field Corrector Imaging Accessory – Reduces Focal Length & Ratio 37% – f/10 to f/6.3 – Ideal for Deep-Sky Observing & Astroimaging – Works w/Schmidt-Cassegrain Telescopes
- Celestron 93633-A SLR or DSLR T-Adapter (C5, 6, 8, 9.25, 11, 14), Black
- Celestron 93419 T-Ring Adapter for Canon EOS Digital Cameras, Black

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-24*