---
product_id: 440410
title: "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"
brand: "celestron"
price: "€ 307.19"
currency: EUR
in_stock: true
reviews_count: 8
category: "Celestron"
url: https://www.desertcart.com.cy/products/440410-celestron-focal-reducer-and-field-corrector-imaging-accessory-reduces-focal
store_origin: CY
region: Cyprus
---

# wider field of view for deep-sky imaging 37% focal length & f/ratio reduction fully multi-coated lens for max light transmission 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

**Brand:** celestron
**Price:** € 307.19
**Availability:** ✅ In Stock

## Summary

> 🌠 Unlock the universe’s secrets with 37% more speed and clarity!

## Quick Answers

- **What is this?** 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 by celestron
- **How much does it cost?** € 307.19 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/440410-celestron-focal-reducer-and-field-corrector-imaging-accessory-reduces-focal)

## 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

- • **Expand Your Cosmic Horizons:** Wider field of view means capturing more stars, nebulae, and galaxies in every shot.
- • **Built to Last with Confidence:** Durable machined aluminum housing backed by a 2-year US warranty and expert support.
- • **Double Your Telescope’s Power:** Transforms your f/10 SCT to a fast f/6.3 for versatile lunar, planetary, and deep-sky use.
- • **Seamless Accessory Compatibility:** Works flawlessly with T-adapters, star diagonals, off-axis guiders, and more.
- • **Sharper Images, Even at the Edges:** Corrects field curvature for crisp, high-contrast views across the entire frame.

## Overview

The Celestron Focal Reducer & Field Corrector is a precision accessory designed for Schmidt-Cassegrain telescopes that reduces focal length and f/ratio by 37%, converting an f/10 system to f/6.3. This results in a wider field of view and shorter exposure times, ideal for deep-sky observing and astrophotography. Fully multi-coated for maximum light transmission and housed in durable machined aluminum, it supports all standard SCT accessories and comes with a 2-year warranty and US-based expert support.

## 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.

Review: Visual or Video -A Great Accessory - I am sorry that I did not buy this accessory two years ago. It all began with a used Celestron C5. Then I bought a very nice used Nexstar 8SE and thought wow, I should have done this go-to thing sooner. After a year or so, I moved up to a new Celestron CPC925 and decided to explore video astronomy with an inexpensive Samsung SBC-2000 security cam. Most SCTs have a focal ratio of about f/10 (focal length divided by aperture) but a camera works better with a faster (shorter focal length) scope. The usual way to do that with a video camera is to screw on a small .5x reducer. So I bought on of those for $35 and was just amazed at the detail and colors in the Dumbbell Nebula. Then someone over at Cloudynights.com suggested that try adding a f/6.3 reducer (stacking reducers). So I bought the f/6.3, screwed in on the back of the CPC925, replaced the visual back and diagonal, mounted the camera (without the .5x) and stayed up until 2AM looking at the Orion Nebula. Before heading for bed, I pulled the camera, put in a 20MM 68 degree APOV eyepiece, and had another "Wow!" moment. The Celestron f/6.3 reducer-corrector really brightens the image, widens the field of view, improves contrast and detail, and flattens the image improving the look of stars near the edge of the field of view. Many people leave them on all of the time except when looking at the moon and planets or other high magnification situation. There are other and cheaper reducers on the market and they do work. However not all of them offer the same degree of improvement at the edge of the field of view. Rod Mollise writes "...6.3 r/cs are one of the best--if not the best--SCT accessories to ever come down the pike" and "I'll put it this way...the 6.3 rarely comes off the rear cell of the C8."
Review: An essential accessory for deep sky viewing or photogrqphy with a Celestron SCT - The focal reducer is easy to screw on and of, and it fits snugly onto my Celestron 8SE. It provides a crisp, clear wider field of view, allowing me to see or photograph a larger area of the sky. It feels sturdy and well-built, with knurled rubber for ease of grip. It is a good value for the money, and recommend it for anyone getting started with a Celestron SCT.

## 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 |
| Best Sellers Rank | #7 in Telescope Reflectors #70 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 | 4.6 out of 5 stars 702 Reviews |
| 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 Height | 2 inches |
| Item Weight | 150 Grams |
| Manufacturer | Celestron |
| Mount | Equatorial Mount |
| Objective Lens Diameter | 200 Millimeters |
| Optical Tube Length | 105 Millimeters |
| Optical-Tube Length | 105 Millimeters |
| Product Dimensions | 2"D x 2"W x 2"H |
| Telescope Mount Description | Equatorial Mount |
| UPC | 050234941754 |
| Warranty Description | 2-YEAR WARRANTY |
| Zoom Ratio | 7 |

## Product Details

- **Brand:** Celestron
- **Optical Tube Length:** 105 Millimeters
- **Eye Piece Lens Description:** Plossl
- **Objective Lens Diameter:** 200 Millimeters
- **Telescope Mount Description:** Equatorial Mount
- **Product Dimensions:** 2"D x 2"W x 2"H
- **Focus Type:** Manual Focus
- **Finderscope:** Reflex
- **Item Weight:** 150 Grams
- **Compatible Devices:** Celestron Schmidt-Cassegrain telescopes (C5, C6, C8, C9.25, C11, C14)

## Images

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

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Visual or Video -A Great Accessory
*by N***N on October 24, 2011*

I am sorry that I did not buy this accessory two years ago. It all began with a used Celestron C5. Then I bought a very nice used Nexstar 8SE and thought wow, I should have done this go-to thing sooner. After a year or so, I moved up to a new Celestron CPC925 and decided to explore video astronomy with an inexpensive Samsung SBC-2000 security cam. Most SCTs have a focal ratio of about f/10 (focal length divided by aperture) but a camera works better with a faster (shorter focal length) scope. The usual way to do that with a video camera is to screw on a small .5x reducer. So I bought on of those for $35 and was just amazed at the detail and colors in the Dumbbell Nebula. Then someone over at Cloudynights.com suggested that try adding a f/6.3 reducer (stacking reducers). So I bought the f/6.3, screwed in on the back of the CPC925, replaced the visual back and diagonal, mounted the camera (without the .5x) and stayed up until 2AM looking at the Orion Nebula. Before heading for bed, I pulled the camera, put in a 20MM 68 degree APOV eyepiece, and had another "Wow!" moment. The Celestron f/6.3 reducer-corrector really brightens the image, widens the field of view, improves contrast and detail, and flattens the image improving the look of stars near the edge of the field of view. Many people leave them on all of the time except when looking at the moon and planets or other high magnification situation. There are other and cheaper reducers on the market and they do work. However not all of them offer the same degree of improvement at the edge of the field of view. Rod Mollise writes "...6.3 r/cs are one of the best--if not the best--SCT accessories to ever come down the pike" and "I'll put it this way...the 6.3 rarely comes off the rear cell of the C8."

### ⭐⭐⭐⭐⭐ An essential accessory for deep sky viewing or photogrqphy with a Celestron SCT
*by C***K on January 9, 2026*

The focal reducer is easy to screw on and of, and it fits snugly onto my Celestron 8SE. It provides a crisp, clear wider field of view, allowing me to see or photograph a larger area of the sky. It feels sturdy and well-built, with knurled rubber for ease of grip. It is a good value for the money, and recommend it for anyone getting started with a Celestron SCT.

### ⭐⭐⭐⭐⭐ Buy this, you need it.
*by M***N on January 11, 2017*

A brilliant solution to a problem I didn't know I had. I have been doing a lot of astrophotography with my celestron scope. This is a tremendous help. Before, when trying to get a photo of the entire moon, I was taking maybe 22 photos and stitching them together on the PC for one combined picture. It took a long time to photograph and to stitch. With the reducer, the field of view is wider (but less magnification) and it took just 6 shots to get the entire moon, and I could possibly have done it in 4. With the Deep Sky Imager I am taking much superior shots of the Orion Nebula. It looks far superior with a much wider field of view and it also makes things brighter which eases the exposure problem. The product is easy to install. I can do it as the telescope continues to track. Unscrew the eye piece, screw on the reducer then screw the eyepiece into the reducer and you are ready for your wide angle shots. Summary: it is really improving my photography.

## Frequently Bought Together

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-04-23*