---
product_id: 322039096
title: "Astromania f/6.3 Reducer Corrector for C-Series Telescopes"
brand: "astromania"
price: "€ 218.99"
currency: EUR
in_stock: true
reviews_count: 5
category: "Astromania"
url: https://www.desertcart.nl/products/322039096-astromania-f-6-3-reducer-corrector-for-c-series-telescopes
store_origin: NL
region: Netherlands
---

# 3x faster exposure times 41mm fully multi-coated aperture 37% focal length reduction Astromania f/6.3 Reducer Corrector for C-Series Telescopes

**Brand:** astromania
**Price:** € 218.99
**Availability:** ✅ In Stock

## Summary

> 🌠 Unlock the cosmos faster — see more, shoot sharper, and never miss a celestial moment!

## Quick Answers

- **What is this?** Astromania f/6.3 Reducer Corrector for C-Series Telescopes by astromania
- **How much does it cost?** € 218.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/322039096-astromania-f-6-3-reducer-corrector-for-c-series-telescopes)

## Best For

- astromania enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Seamlessly fits all Celestron Schmidt-Cassegrain telescopes from 5" to 14", making it the ultimate upgrade for your setup.
- • **Dual Focal Ratio Powerhouse:** Transform your Celestron SCT from f/10 to a blazing f/6.3 for ultra-wide views without image compromise.
- • **Compact & Lightweight Design:** At just 6.4 ounces, this sleek accessory integrates effortlessly without adding bulk or complexity.
- • **Precision Four-Element Optics:** Experience crystal-clear astrophotography with a fully multi-coated 41mm aperture lens that maximizes light transmission.
- • **Speed Up Your Night Sky Sessions:** Reduce exposure times by a factor of three—capture stunning deep-sky objects faster and more efficiently.

## Overview

The Astromania f/6.3 Reducer Corrector is a precision four-element, fully multi-coated optical accessory designed to reduce the focal length of Celestron Schmidt-Cassegrain telescopes by 37%, converting f/10 systems to f/6.3. Compatible with models ranging from 5" to 14", it delivers a significantly wider field of view and reduces astrophotography exposure times by up to three times, all while maintaining sharp, high-quality images.

## Description

This focal reducer lens and field corrector combo accessory works with all Celestron Schmidt-Cassegrain 5", 6", 8", 9 1/4", 11", and 14" telescopes. This smart accessory allows you to have a dual focal ratio instrument, without sacrificing image quality. The reducer/corrector is f/6.3 for C5, C6, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope. If you offer wide fields of view with any Schmidt-Cassegrain telescope. Used for astrophotography, reduces exposure time by a factor of 3.

Review: Für diesen Preis tut es wirklich was es soll, sitzt perfekt an meinem C8 und vergrößert das Gesichtsfeld so, als hätte ich einen 2" Adapter mit einem 32mm Okular dran. Aber dabei gestaltet sich der Anblick viel schärfer, denn durch das 2" Okular kommt eine miminmale Unschärfe herein, wegen der etwas grösseren Aufhellung.
Review: It works as intended. While distortion can be seen at the outside of the field, its a lot cheaper than many of its competitors (including the much better Starizona one, its logical upgrade). Something that works is to focus a star mid-way through the image. Make sure you get the distance right (105mm is ideal), and get good flat frames to counter the vignetting you may get with larger sensors.

## Features

- This smart accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality.
- Four-element optical design, fully multi-coated with 41mm transparent aperture.
- This focal reducer and field corrector combination works with all Celestron Schmidt-Cassegrain 5", 6", 8", 9 1/4", 11", and 14" telescopes.
- The reducer shortens the effective focal length of the Schmidt-Cassegrain telescopic optical system by 37%.
- Converts f/10 optical system to f/6.3 faster for a significantly wider field of view.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08B4LRJ73 |
| Best Sellers Rank | 635 in Telescope Accessories |
| Brand | Astromania |
| Customer Reviews | 4.7 4.7 out of 5 stars (73) |
| Date First Available | 19 Jan. 2018 |
| Focus type | Manual Focus |
| Guaranteed software updates until | unknown |
| Item Weight | 6.4 Ounces |
| Item model number | SKU_AM_RC633 |
| Package Dimensions L x W x H | 6.9 x 6.6 x 5.9 centimetres |
| Package Weight | 0.18 Kilograms |
| Part number | SKU_AM_RC633 |
| Size | f/6.3 Reducer for SCT |
| Telescope Mount Description | Altazimuth Mount |

## Product Details

- **Brand:** Astromania
- **Compatible devices:** Camera
- **Exit pupil:** 6.51 Millimeters
- **Finderscope:** Reflex
- **Focal length description:** 1274 mm
- **Focus type:** Manual Focus
- **Item weight:** 6.4 Ounces
- **Lens coating description:** Fully Multi-Coated
- **Model name:** Reducer focal f/6.3
- **Telescope mount description:** Altazimuth Mount

## Images

![Astromania f/6.3 Reducer Corrector for C-Series Telescopes - Image 1](https://m.media-amazon.com/images/I/71+GbnOrBCL.jpg)
![Astromania f/6.3 Reducer Corrector for C-Series Telescopes - Image 2](https://m.media-amazon.com/images/I/71JiY3PJw0L.jpg)
![Astromania f/6.3 Reducer Corrector for C-Series Telescopes - Image 3](https://m.media-amazon.com/images/I/71kmzeLwBnL.jpg)
![Astromania f/6.3 Reducer Corrector for C-Series Telescopes - Image 4](https://m.media-amazon.com/images/I/81Dl3ElIEJL.jpg)
![Astromania f/6.3 Reducer Corrector for C-Series Telescopes - Image 5](https://m.media-amazon.com/images/I/81hYiJWB2eL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***. on 22 November 2024*

Für diesen Preis tut es wirklich was es soll, sitzt perfekt an meinem C8 und vergrößert das Gesichtsfeld so, als hätte ich einen 2" Adapter mit einem 32mm Okular dran. Aber dabei gestaltet sich der Anblick viel schärfer, denn durch das 2" Okular kommt eine miminmale Unschärfe herein, wegen der etwas grösseren Aufhellung.

### ⭐⭐⭐⭐⭐ Review
*by J***L on 2 January 2024*

It works as intended. While distortion can be seen at the outside of the field, its a lot cheaper than many of its competitors (including the much better Starizona one, its logical upgrade). Something that works is to focus a star mid-way through the image. Make sure you get the distance right (105mm is ideal), and get good flat frames to counter the vignetting you may get with larger sensors.

### ⭐⭐⭐⭐⭐ Review
*by A***O on 11 February 2024*

This is an excellent reducer. I use this with my Celestron CPC 800 (f10) and Nikon D3300 DSLR and calculated that I get about 0.6x reduction based on the field of view. You also need a Celestron T adapter and camera-specific T ring to connect the telescope to your camera. These should give a proper back focus. I’m able to get perfect focus (using Bahtinov mask) and I don’t see any distortions of star shapes. It’s nice to be able to have a wider field of vision and faster light acquisition compared to DSLR without reducer.

## Frequently Bought Together

- Astromania f/6.3 Reducer Corrector for C Series Telescopes
- Celestron T-Adapter with SCT 5, 6, 8 with 9.25, 11, 14, Black (93633-A)
- Celestron - SkyPortal WiFi Module - Control Your Celestron Computerized Telescope via Smartphone - Telescope Wi-Fi Accessory

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-26*