---
product_id: 23737182
title: "SkyWatcher S20204 Quattro Coma Corrector (Black)"
brand: "sky-watcher"
price: "Rp16872306"
currency: IDR
in_stock: true
reviews_count: 3
url: https://www.desertcart.id/products/23737182-skywatcher-s20204-quattro-coma-corrector-black
store_origin: ID
region: Indonesia
---

# Canon & Nikon adapters available f/4 ED coma corrector Optimized for Quattro imaging SkyWatcher S20204 Quattro Coma Corrector (Black)

**Brand:** sky-watcher
**Price:** Rp16872306
**Availability:** ✅ In Stock

## Summary

> 🌌 Elevate Your Stargazing Game!

## Quick Answers

- **What is this?** SkyWatcher S20204 Quattro Coma Corrector (Black) by sky-watcher
- **How much does it cost?** Rp16872306 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/23737182-skywatcher-s20204-quattro-coma-corrector-black)

## Best For

- sky-watcher enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Integration:** Requires only 55mm backfocus for easy setup.
- • **Tailored for Quattro:** Designed specifically for Quattro imaging Newtonians to elevate your astrophotography.
- • **Precision Engineering:** Crafted from premium FPL51 and Schott glass for superior performance.
- • **Versatile Compatibility:** Enhance your gear with optional Canon and Nikon adapters (sold separately).
- • **Transform Your Telescope:** Experience stunning clarity with the f/4 ED coma corrector.

## Overview

The SkyWatcher S20204 Quattro Coma Corrector is a high-performance optical accessory designed for Quattro imaging Newtonians, featuring an f/4 ED coma corrector made from premium FPL51 and Schott glass. It requires a 55mm backfocus and offers compatibility with Canon and Nikon cameras through optional adapters.

## Description

SkyWatcher S20204 Quattro Coma Corrector (Black)

## Features

- f/4 ED coma corrector
- FPL51 and Schott glass
- Optimized for Quattro imaging Newtonians
- Requires 55mm backfocus
- Canon and Nikon adapters available (sold separately)

## Product Details

- **Brand:** Sky-Watcher
- **Model Name:** S20204
- **Objective Lens Diameter:** 55 Millimeters
- **Telescope Mount Description:** Altazimuth Mount
- **Product Dimensions:** 1.5"D x 1.5"W x 1.5"H
- **Focus Type:** Manual Focus
- **Finderscope:** Reflex
- **Item Weight:** 1 Pounds
- **Compatible Devices:** Sky-Watcher Quattro Imaging Newtonian Telescopes
- **Lens Coating Description:** Fully multi-coated

## Images

![SkyWatcher S20204 Quattro Coma Corrector (Black) - Image 1](https://m.media-amazon.com/images/I/510gJLCn8LL.jpg)

## Customer Reviews

### ⭐ Buyer Beware...previously opened box
*by J***T on April 11, 2025*

I had to return the original coma corrector because it appeared that the box had been opened and the product used, based on scratches it had on the edge of the corrector and the open plastic bag it came in. I purchased another version and it arrived perfectly fine. I know that some products are sold as "previously opened" (or something like that) and come with a notation to that effect. This original order did not indicate that was the case. I urge all buyers to carefully examine the box before using in case this happens to you.

### ⭐⭐⭐⭐⭐ Proof is in the Pudding
*by J***N on February 4, 2024*

While the price tag will give you pause, when it comes to astrophotography… you get what you pay for in many scenarios. The construction of the FF is of good quality, it is threaded on the end to accept 2” filters, and for DSLRs…the M48 Canon or Nikon adapter is required, which Skywatcher has available here (Amazon). The M48 adapter and FF combined achieve 55mm back focus needed for DSLR. I have uploaded a “first light” capture using the field flattener with the SW Quattro 200P Newtonian. The image is a single RAW, 60 second exposure, ISO 1600, shot with a Canon Rebel T4i modified, mounted on an Explore Scientific EXOS2-GT PMC-8.

### ⭐⭐⭐⭐⭐ Best corrector for the quattro
*by A***T on October 27, 2020*

If you have a Quattro. This is the coma corrector you want. Its not designed expressly for a range of focal ratios (though it will work), its designed for your f/4. Perfectly round stars all the way to edge of frame, though I did have to dial in the back focus first.

## Frequently Bought Together

- SkyWatcher S20204 Quattro Coma Corrector (Black)
- Sky Watcher Quattro 200P Imaging Newtonian - Large Aperture 8-inch Reflector Optical Tube for Astrophotography

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**Shop now:** [https://www.desertcart.id/products/23737182-skywatcher-s20204-quattro-coma-corrector-black](https://www.desertcart.id/products/23737182-skywatcher-s20204-quattro-coma-corrector-black)

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-01-28*