---
product_id: 427533644
title: "Celestron Dew Shield with Cover Cap – Fits 8\" Schmidt, EdgeHD, RASA"
brand: "celestron"
price: "€ 459.24"
currency: EUR
in_stock: true
reviews_count: 13
category: "Celestron"
url: https://www.desertcart.pt/products/427533644-celestron-dew-shield-with-cover-cap-fits-8-schmidt-edgehd
store_origin: PT
region: Portugal
---

# Blocks stray/off-axis light Easy clip installation & cable management Prevents dew formation Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA

**Brand:** celestron
**Price:** € 459.24
**Availability:** ✅ In Stock

## Summary

> 🌠 Keep your cosmos crystal clear — no dew, no glare, just stellar views!

## Quick Answers

- **What is this?** Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA by celestron
- **How much does it cost?** € 459.24 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/427533644-celestron-dew-shield-with-cover-cap-fits-8-schmidt-edgehd)

## 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

- • **Protect & Preserve:** Integrated cover cap shields your telescope from dust and debris when not in use—keep your gear pristine.
- • **Maximize Image Clarity:** Velvet-lined interior and rigid body block stray light and glare for sharper, contrast-rich views.
- • **Stay Dew-Free All Night:** Advanced shield design keeps your 8" Schmidt, EdgeHD, or RASA lens crystal clear, no matter the humidity.
- • **Trusted Quality & Support:** Backed by Celestron’s 2-year US warranty and expert support, join a community of passionate astro pros.
- • **Effortless Setup & Power Ready:** Two adjustable clips plus cable management slot make installation and Fastar/Hyperstar setups seamless.

## Overview

The Celestron Dew Shield with Cover Cap is a precision-engineered accessory designed for 8" Schmidt-Cassegrain, EdgeHD, and RASA telescopes. It prevents dew formation on the corrector lens, reduces stray light with a velvet-lined interior, and features two adjustable clips for easy installation. The built-in cable management slot supports Fastar/Hyperstar configurations, while the included cover cap protects your telescope from dust. Backed by a 2-year US warranty and expert support, it’s a must-have for serious amateur astronomers seeking flawless night sky observations.

## Description

Dew prevention shield for Celestron 8" SCT/EdgeHD/RASA telescopes

Review: Update - Good fit good quality BUT Too heavy. 8” Nexster starts to slowly drop. If you adjust the center of gravity it makes it unusable for objects approaching the zenith. It causes the scope to hit the bottom of the bracket. I returned it. Looking for a lighter replacement. Update. Five minutes after I shipped it back to desertcart. Celestron support sent me an email saying to tjghten the clutch nut. This tightened up the movement of the up and down axis. Probably be ordering it again.
Review: This fits the EdgeHD 11" perfectly and has a port to allow power and USB cables through - I bought this for two purposes: First, during a night of viewing in Western Washington's wet air, this keeps the lens from fogging up on my EdgeHD 11" (which it certainly did without any protection). Secondly, for calibration exposures, especially flats: It is very handy to point the OTA straight up (Zenith), put a few layers of white paper or cloth over the top and an A2 format tracing panel on top of that to sequence a number of "flat" exposures for calibrating the extreme concentric gradient or the SCT in the astro-photos captured in a session. It works great for that. (Make sure to put some Gorilla tape over the cooling light on a ZWO cooled camera and lay some dark paper or cloth over the camera to keep from getting a red reflection glow in your flats. The only caveat is that, for "dark" calibration frames, it leaks light and will require some effort seal off all of the places (around the edges at the OTA and around the cap) that may be leaky. So, for dark frames I just parked the OTA in the horizontal position, unscrewed the camera and capped it, and laid the camera inside the OTA to expose the darks and biases--after waiting for the sensor to cool again.

## Features

- Helps prevent dew formation on the Schmidt corrector lens
- Prevents off-axis glare from entering the optical system
- Rigid body with a velvet-lined interior surface to reduce stray light
- Two adjustable clips for easy installation and disassembly
- Cable management at the base of the shield—perfect for using the Fastar/Hyperstar configuration or using in conjunction with the Celestron Dew Heater Rings
- An included cover cap keeps your telescope free from dust when not in use
- 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 | B09MZKZ2ZZ |
| Additional Features | Integrated Cover Cap and Cable Management Slot |
| Age Range Description | Adults |
| Best Sellers Rank | #8 in Telescope Dew Caps |
| Brand | Celestron |
| Built-In Media | Dew shield, two adhesive logo labels |
| Compatible Devices | Fits 8" Schmidt-Cassegrain, EdgeHD, and RASA telescope tubes |
| Customer Reviews | 4.6 out of 5 stars 204 Reviews |
| EU Spare Part Availability Duration | 2 years |
| Eye Piece Lens Description | Manual Zoom |
| Finderscope | Reflex |
| Focal Length Description | 8 inches |
| Focus Type | Manual Focus |
| Global Trade Identification Number | 00050234940214 |
| Item Dimensions D x W x H | 15.75"D x 15.75"W x 15.75"H |
| Item Highlight | Prevents Dew Formation, Blocks Stray Light, Fits Multiple 8in Optical Designs, Protective Cover Cap, Easy Installation |
| Item Weight | 3.08 kg |
| Manufacturer | Celestron |
| Manufacturer Part Number | 94021-CGL |
| Model Name | Aluminum Dew Shield & Cover Cap |
| Model Number | 94021-CGL |
| Mount | Equatorial Mount |
| Number of Items | 1 |
| Objective Lens Diameter | 20.3 centimeters |
| Product Dimensions | 15.75"D x 15.75"W x 15.75"H |
| Telescope Mount Description | Equatorial Mount |
| UPC | 050234940214 |
| Unit Count | 1 Count |
| Warranty Description | 2-YEAR WARRANTY |
| Zoom Ratio | 20x-60x |

## Product Details

- **Brand:** Celestron
- **Compatible Devices:** Fits 8" Schmidt-Cassegrain, EdgeHD, and RASA telescope tubes
- **Eye Piece Lens Description:** Manual Zoom
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Item Weight:** 3.08 kg
- **Model Name:** Aluminum Dew Shield & Cover Cap
- **Objective Lens Diameter:** 20.3 centimeters
- **Product Dimensions:** 15.75"D x 15.75"W x 15.75"H
- **Telescope Mount Description:** Equatorial Mount

## Images

![Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA - Image 1](https://m.media-amazon.com/images/I/51m56C2-1lL.jpg)
![Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA - Image 2](https://m.media-amazon.com/images/I/51DaFgLnQPL.jpg)
![Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA - Image 3](https://m.media-amazon.com/images/I/515zPgCYrKL.jpg)
![Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA - Image 4](https://m.media-amazon.com/images/I/51vSXpZwQEL.jpg)
![Celestron Dew Shield with Cover Cap – Fits 8" Schmidt, EdgeHD, RASA - Image 5](https://m.media-amazon.com/images/I/513XgLxSpML.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Update
*by M***A on March 17, 2026*

Good fit good quality BUT Too heavy. 8” Nexster starts to slowly drop. If you adjust the center of gravity it makes it unusable for objects approaching the zenith. It causes the scope to hit the bottom of the bracket. I returned it. Looking for a lighter replacement. Update. Five minutes after I shipped it back to Amazon. Celestron support sent me an email saying to tjghten the clutch nut. This tightened up the movement of the up and down axis. Probably be ordering it again.

### ⭐⭐⭐⭐⭐ This fits the EdgeHD 11" perfectly and has a port to allow power and USB cables through
*by B***E on November 21, 2023*

I bought this for two purposes: First, during a night of viewing in Western Washington's wet air, this keeps the lens from fogging up on my EdgeHD 11" (which it certainly did without any protection). Secondly, for calibration exposures, especially flats: It is very handy to point the OTA straight up (Zenith), put a few layers of white paper or cloth over the top and an A2 format tracing panel on top of that to sequence a number of "flat" exposures for calibrating the extreme concentric gradient or the SCT in the astro-photos captured in a session. It works great for that. (Make sure to put some Gorilla tape over the cooling light on a ZWO cooled camera and lay some dark paper or cloth over the camera to keep from getting a red reflection glow in your flats. The only caveat is that, for "dark" calibration frames, it leaks light and will require some effort seal off all of the places (around the edges at the OTA and around the cap) that may be leaky. So, for dark frames I just parked the OTA in the horizontal position, unscrewed the camera and capped it, and laid the camera inside the OTA to expose the darks and biases--after waiting for the sensor to cool again.

### ⭐⭐⭐⭐⭐ A winner!
*by C***E on June 24, 2022*

I have both the Astrozap and the Celestron aluminum dew shields for the RASA 8. The Celestron dew shield is 12.2 oz heavier (1 lb, 14.8 oz v 1lb 2.6 oz for the Astrozap). For the Astrozap, unless you have both a top and bottom CGM dovetail bars on the RASA, getting the Astrozap to fit straight is a bit of a challenge. (I might note that adding the optional top CGM dovetail bar on the RASA 8 adds about two pounds!) The Celestron dew shield has inner tabs which fit against the front of the scope to insure a straight alignment. The two locking tabs on the Celestron means you can attach and remove the dew shield much more quickly than the 4 thumbscrews on the Astrozap. The Celestron also has an inner felt lining to help absorb stray light, and a front cover, both of which are missing from the Astrozap. The Celestron does a better job of blocking stray light from the back end of the shield, which is a plus for taking calibration frames on the RASA. The Celestron dew shield is a great match from the Celestron corrector plate dew heater, as the dew heater connectors snap into place on the Celestron dew shield. Finally, the Celestron aluminum dew shield is much less expensive than the Astrozap shield. Clear winner: Celestron!

## Frequently Bought Together

- Celestron 94021 Aluminium Telescope Dew Shield with Cover Cap, Fits 8” Schmidt Cassegrain, EdgeHD, and RASA telescopes
- Celestron – Dew Heater Ring – Aluminum Dew Prevention – Compatible 8” Schmidt-Cassegrain, EdgeHD, RASA Telescope
- Celestron Smart DewHeater Controller 2X

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-10-06*