---
product_id: 257044536
title: "- Astromania Focal Reducer f/6.3, Fully Multi Coated Focal Reducer Corrector That Reduces Focal Length & Ratio 37% for Telescope Eyepiece Observing, Work for C Series Schmidt-Cassegrain Telescopes"
brand: "astromania"
price: "VT38415"
currency: VUV
in_stock: true
reviews_count: 9
category: "Astromania"
url: https://www.desertcart.vu/products/257044536-astromania-focal-reducer-f-6-3-fully-multi-coated-focal
store_origin: VU
region: Vanuatu
---

# 4-element fully multi-coated optics 37% focal length reduction for wider views Premium aerospace aluminum build - Astromania Focal Reducer f/6.3, Fully Multi Coated Focal Reducer Corrector That Reduces Focal Length & Ratio 37% for Telescope Eyepiece Observing, Work for C Series Schmidt-Cassegrain Telescopes

**Brand:** astromania
**Price:** VT38415
**Availability:** ✅ In Stock

## Summary

> 🌌 Unlock the Universe: See More, Capture Faster, and Never Miss a Star!

## Quick Answers

- **What is this?** - Astromania Focal Reducer f/6.3, Fully Multi Coated Focal Reducer Corrector That Reduces Focal Length & Ratio 37% for Telescope Eyepiece Observing, Work for C Series Schmidt-Cassegrain Telescopes by astromania
- **How much does it cost?** VT38415 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/257044536-astromania-focal-reducer-f-6-3-fully-multi-coated-focal)

## 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

- • **Expand Your Cosmic Horizons:** Transforms your f/10 SCT telescope into a faster f/6.3 system, delivering a 37% wider field of view for breathtaking deep-sky observations.
- • **Universal SCT Compatibility:** Seamlessly fits all Celestron Schmidt-Cassegrain telescopes from 5" to 14", including NexStar SE, Evolution, and EdgeHD series—one reducer to rule them all.
- • **Astrophotography Game-Changer:** Speeds up exposure times and maintains image quality, making it an essential accessory for serious deep-sky imaging and visual astronomy.
- • **Crystal-Clear Views Every Time:** Advanced 4-element fully multi-coated optics minimize chromatic aberration and maximize light transmission for razor-sharp celestial images.
- • **Engineered for Precision & Durability:** CNC-machined aluminum with shock-absorbing rubber housing ensures your gear stays protected on every cosmic adventure.

## Overview

The Astromania Focal Reducer f/6.3 is a premium, fully multi-coated 4-element optical corrector designed to reduce the focal length of Celestron Schmidt-Cassegrain telescopes by 37%, converting f/10 systems into faster f/6.3 configurations. Crafted from aerospace-grade aluminum with protective rubber housing, it offers durability and protection during transport. Compatible with a wide range of SCT models, it enhances both visual observing and astrophotography by widening the field of view, reducing exposure times, and maintaining sharp, clear images with minimal distortion.

## Description

desertcart.com : Astromania Focal Reducer f/6.3, Fully Multi Coated Focal Reducer Corrector That Reduces Focal Length & Ratio 37% for Telescope Eyepiece Observing, Work for C Series Schmidt-Cassegrain Telescopes : Electronics

Review: Exactly What I Needed – Huge Improvement in My Views! - Exactly What I Needed – Huge Improvement in My Views! I purchased this 0.5x focal reducer to use with my telescope for both visual astronomy and astrophotography, and I couldn’t be happier. The build quality is solid, the glass is crystal clear, and it threads easily onto my camera adapter or eyepieces without any issues. The difference is night and day—literally! My field of view is noticeably wider, which makes it so much easier to fit large objects like the Moon, Orion Nebula, and star clusters into one frame. For imaging, it really speeds up exposure times, which helps bring out more detail and color in less time. No noticeable distortion, minimal vignetting, and stars stay sharp across most of the field. For the price, this is an absolute game-changer and a must-have accessory for anyone serious about deep-sky observing or astrophotography. Highly recommend!
Review: It works as intended, with expected deficiencies due to its price point - 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

- Premium Aerospace Aluminum & Protective Design: CNC-machined aluminum alloy with shock-absorbing rubber housing; complete with dust caps (front/rear) & storage case for protecting focal reducer from impacts, moisture during transport and storage
- Advanced Multi-Coated Optical System for Optimal Clarity: Features 4-element fully multi-coated optics with 41mm clear aperture, ensuring maximum reflection and minimized chromatic aberration for crisp celestial views
- Universal SCT Compatibility: Designed with SCT thread for all Celestron Schmidt-Cassegrain telescopes ( 5 inch 6 inch 8 inch 9.25 inch 11 inch & 14 inch ) including NexStar SE/Evolution/EdgeHD series, making it the ultimate focal reducer for SCT owners
- 37% Focal Length Reduction: Astronomia F/6.3 Focal Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37 percent; transform your f/10 system into a faster f/6.3 configuration for significantly wider field of view
- Excellent & Essential Telescope Accessory: The essential f/6.3 reducer-corrector for deep-sky imaging as a clever accessory makes it possible to have a dual focal ratio instrument without sacrificing image quality during astronomical observation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08B4LRJ73 |
| Best Sellers Rank | #147 in Telescope Photo Adapters |
| Customer Reviews | 4.5 4.5 out of 5 stars (137) |
| Date First Available | July 22, 2020 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6.4 ounces |
| Item model number | SKU_AM_RC633 |
| Manufacturer | Astromania |
| Package Dimensions | 2.72 x 2.6 x 2.32 inches |

## Product Details

- **Brand:** Astromania
- **Compatible Devices:** Celestron Schmidt-Cassegrain telescopes (C5, C6, C8, C9.25, C11, C14)
- **Exit Pupil:** 6.51 Millimeters
- **Finderscope:** Reflex
- **Focal Length Description:** 85 millimeters
- **Focus Type:** Manual Focus
- **Item Weight:** 6.4 Ounces
- **Lens Coating Description:** Fully Multi-Coated
- **Model Name:** Reducer/Corrector Lens
- **Telescope Mount Description:** Telescope Mount

## Images

![- Astromania Focal Reducer f/6.3, Fully Multi Coated Focal Reducer Corrector That Reduces Focal Length & Ratio 37% for Telescope Eyepiece Observing, Work for C Series Schmidt-Cassegrain Telescopes - Image 1](https://m.media-amazon.com/images/I/71g89jtbJfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly What I Needed – Huge Improvement in My Views!
*by J***5 on August 20, 2025*

Exactly What I Needed – Huge Improvement in My Views! I purchased this 0.5x focal reducer to use with my telescope for both visual astronomy and astrophotography, and I couldn’t be happier. The build quality is solid, the glass is crystal clear, and it threads easily onto my camera adapter or eyepieces without any issues. The difference is night and day—literally! My field of view is noticeably wider, which makes it so much easier to fit large objects like the Moon, Orion Nebula, and star clusters into one frame. For imaging, it really speeds up exposure times, which helps bring out more detail and color in less time. No noticeable distortion, minimal vignetting, and stars stay sharp across most of the field. For the price, this is an absolute game-changer and a must-have accessory for anyone serious about deep-sky observing or astrophotography. Highly recommend!

### ⭐⭐⭐⭐⭐ It works as intended, with expected deficiencies due to its price point
*by J***L on January 2, 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.

### ⭐⭐⭐⭐⭐ Achromatic - Full Size Lens - Lens May Need Reversing
*by R***C on March 20, 2025*

This is an achromatic (color-corrected) doublet (two lenses glued) that is plano-convex (one flat side, one curved outward). Typically you want to look at (or aim your camera at) the flat side of the lens, yet mine shipped with the curved side facing the male threads/user/camera. I used vernier caliper teeth to gently unscrew the retaining ring and carefully with a cotton pad reversed the lens. After reversing the lens, it went from hazy and distorted to sharp, clear, and color corrected. I'm glad I took a chance on this because it's a great find and an amazing pairing with my sv205 astrophotography camera with it's imx415 sensor (only 6mm diameter, but 4k). This helps 'shrink' the image coming from the telescope down so more of the telescope's image and definition fit on the sensor, making a WORLD of difference. If you're looking at this vs the $10 one - get this. By comparison, the $10 versions: - use a smaller lens, have really bad color fringing, even just for visual use

## 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 Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-11*