---
product_id: 440410
title: "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"
brand: "celestron"
price: "193514CFA"
currency: XOF
in_stock: true
category: "Celestron"
url: https://www.desertcart.sn/products/440410-focal-reducer-and-field-corrector-imaging-accessory-reduces-focal-length
store_origin: SN
region: Senegal
---

# Expands deep-sky & astrophoto capabilities 37% focal length & f/ratio reduction Seamless accessory compatibility 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

**Brand:** celestron
**Price:** 193514CFA
**Availability:** ✅ In Stock

## Summary

> 🔭 Unlock dual telescope power — see more, shoot faster, and never miss a cosmic moment!

## Quick Answers

- **What is this?** 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 by celestron
- **How much does it cost?** 193514CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/440410-focal-reducer-and-field-corrector-imaging-accessory-reduces-focal-length)

## 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

- • **Sharper, Brighter Views:** Fully multi-coated optics maximize light transmission and near full-field illumination for stunning clarity.
- • **Trusted Quality & Support:** Backed by Celestron’s 2-year US warranty and expert customer service since 1960.
- • **Plug & Play Accessory Ready:** Easily thread on and keep using your T-Adapters, star diagonals, and off-axis guiders without hassle.
- • **Double Your Telescope’s Power:** Transform your f/10 Schmidt-Cassegrain into a fast f/6.3 for versatile lunar, planetary, and deep-sky use.
- • **Low-Light Terrestrial Digiscoping:** Faster f/ratio lets you capture crisp images even in dim lighting—perfect for nature and night photography.

## Overview

The Celestron Focal Reducer & Field Corrector is a precision accessory that reduces your Schmidt-Cassegrain telescope’s focal length and f/ratio by 37%, converting an f/10 system to f/6.3. This upgrade broadens your field of view, shortens exposure times for astrophotography, and enhances low-light terrestrial imaging. Fully multi-coated lenses ensure maximum light transmission, while compatibility with standard accessories keeps your setup flexible. Lightweight and easy to install, it’s backed by a 2-year warranty and decades of Celestron expertise.

## 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 unique 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 additional 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 lens is housed in machined aluminum for are machined aluminum black anodized. The internal surfaces are blackened and glare-threaded to provide the highest contrast. The lens has a knurled surface, providing a tremendous gripping surface for threading/unthreading.

## Features

- LIKE HAVING TWO TELESCOPES IN ONE: Your long focal length Schmidt-Cassegrain is well suited to lunar and planetary work. Add the Reducer Corrector and you have a short focal length telescope perfect for deep sky observing and astrophotography.
- REDUCES FOCAL LENGTH AND F/RATIO BY 37%: Simply thread the reducer onto your telescopes rear cell and an f/10 Schmidt-Cassegrain becomes f/6.3. 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 as usual.
- GREAT 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.
- UNBEATABLE WARRANTY & SUPPORT: Buy with confidence from Celestron, a leading telescope brand in California since 1960. Your purchase includes a 2-Year US Warranty and unlimited support from our team of US-based experts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00009XVHZ |
| Additional Features | Dual Focal Length Functionality |
| Best Sellers Rank | #11 in Telescope Reflectors #138 in Telescope & Microscope Accessories |
| Brand | Celestron |
| Built-In Media | Reducer - Corrector |
| Coating | Fully Multi-Coated |
| Compatible Devices | Celestron Schmidt-Cassegrain telescopes (C5, C6, C8, C9.25, C11, C14) |
| Customer Reviews | 4.7 4.7 out of 5 stars (716) |
| Exit Pupil Diameter | 31.75 Millimeters |
| Eye Piece Lens Description | Plossl |
| Field Of View | 0.04 Degrees |
| Finderscope | Reflex |
| Focal Length Description | The original focal length of the telescope, before using the reducer corrector, is not explicitly mentioned in the provided information. However, it can be inferred that for an f/10 system, the reducer corrector reduces the focal length by 37% to make it an f/6.3 system. Thus, if the focal length of the f/10 system is F, then the focal length after using the reducer corrector would be 0.63F (f/6.3… |
| Focus Type | Manual Focus |
| Global Trade Identification Number | 00050234941754 |
| Item Dimensions D x W x H | 2"D x 2"W x 2"H |
| Item Weight | 150 Grams |
| Manufacturer | Celestron |
| Manufacturer Part Number | 94175 |
| Model Name | Celestron f/6.3 Reducer/Corrector |
| Model Number | 94175 |
| Mount | Equatorial Mount |
| Objective Lens Diameter | 200 Millimeters |
| Optical-Tube Length | 105 Millimeters |
| Power Source | Not Obtainable |
| UPC | 050234941754 |
| Unit Count | 1.0 Count |
| Warranty Description | 2-YEAR WARRANTY |
| Zoom Ratio | 7 |

## Product Details

- **Brand:** Celestron
- **Eye Piece Lens Description:** Plossl
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Model Name:** Celestron f/6.3 Reducer/Corrector
- **Objective Lens Diameter:** 200 Millimeters
- **Optical Tube Length:** 105 Millimeters
- **Power Source:** Not Obtainable
- **Product Dimensions:** 2"D x 2"W x 2"H
- **Telescope Mount Description:** Equatorial Mount

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/519X+yzPqPL.jpg)

## Available Options

This product comes in different **Style** options.

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-06-23*