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July 1st: Store will be closed for Canada Day. Orders placed that day will ship on July 2nd.
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"
Celestron Aluminum Dew Shield with Cover Cap - 8"

Celestron Aluminum Dew Shield with Cover Cap - 8"

by Celestron
SKU CEL-94021
$179.95 - $179.95
$179.95
$179.95 - $179.95
$179.95
Price Match Policy!
  • Rigid aluminum construction prevents flexing and deformation
  • Extends 12.4" from the front of the telescope to block dew and stray light
  • Velvet-lined interior absorbs moisture and improves image contrast
  • Weighs 1.8 lbs and includes a 9.6 oz aluminum cover cap
  • Features a 1.25" wide cable management slot for imaging setups
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Celestron Aluminum Dew Shield with Cover Cap - 8"

    The Celestron Aluminum Dew Shield with Cover Cap for 8" telescopes is a purpose-built accessory designed to protect your optics and enhance your images. This rigid shield measures 12.4" long with a 9.5" diameter, providing a robust barrier against moisture. The entire assembly, including the 9.6 oz cover cap, weighs just 1.8 lbs, adding minimal weight to your optical tube assembly.

    Environmental Control: A 12.4" Barrier Against Dew and Stray Light

    This shield's primary function is to delay the formation of dew on your Schmidt corrector plate by reducing its exposure to the cold night sky. The 12.4" length is critical for slowing this radiative cooling process, keeping your observing or imaging session going longer. For imagers, the shield's rigid design and velvet-lined interior work in tandem to block off-axis stray light from neighboring sources, significantly increasing contrast by darkening the sky background.

    Mechanical Design: Rigid 1.8 lb Aluminum Construction and Custom Fit

    Unlike flexible alternatives, this 1.8 lb dew shield is constructed from a solid aluminum cylinder that will not deform, sag, or flex, ensuring it never vignettes your view. It's engineered for a perfect fit on modern 8” Celestron Schmidt-Cassegrain, EdgeHD, and RASA optical tubes (post-2006). Two adjustable plastic clips provide a secure, non-marring grip, while integrated cutouts accommodate the telescope's top and bottom dovetail bars for a seamless fit.

    Imaging Integration: A 9.6 oz Cover Cap and Integrated Cable Management

    The included 9.6 oz aluminum cover cap fits securely on the end of the shield, protecting your optics from dust when not in use and allowing you to easily acquire dark frames without introducing light leaks. For imagers using Fastar, Hyperstar, or RASA systems, a 1.25" by 1.5" slot at the base of the shield provides clean cable routing. This feature neatly manages power and data lines, such as those for Celestron's Dew Heater Rings, preventing snags and maintaining a streamlined setup.

  • Will the 8" Aluminum Dew Shield fit my older, orange-tube Celestron C8?

    This dew shield is specifically designed for Celestron 8” Schmidt-Cassegrain, EdgeHD, and RASA telescopes manufactured after 2006. While it may fit older models, a perfect connection via the attachment clips and dovetail cutouts is not guaranteed.

    What is the advantage of a rigid aluminum dew shield over a flexible one?

    The primary advantage is stability. The rigid aluminum construction ensures the shield will not sag into the light path, which can cause vignetting. It also provides superior protection against accidental bumps and offers a more secure platform for the cover cap when taking dark frames.

    How does the cable management slot on the 8" Dew Shield help when imaging with a RASA 8?

    When imaging with a RASA 8, your camera and potentially a filter drawer are mounted at the front of the scope, requiring cables for power and data. The 1.25" x 1.5" cable slot allows you to route these cables neatly along the telescope tube, preventing them from hanging loose where they could cause snags or induce vibrations in the wind.

    What is the purpose of the velvet lining inside the Aluminum Dew Shield?

    The black velvet lining serves two purposes. First, it absorbs any stray light that enters the shield, preventing reflections that would reduce image contrast. Second, it helps absorb moisture, further aiding in dew prevention on misty nights.

    I use an 8" EdgeHD with a Celestron Dew Heater Ring. How does this shield accommodate that?

    This dew shield is the ideal companion for the Dew Heater Ring. The integrated cable management slot is perfectly positioned to allow the heater's power cable to pass through, keeping your setup organized and free of dangling wires without creating a new path for stray light to enter.

    Can I leave the 8" Aluminum Dew Shield on my telescope during storage?

    Yes. With the included aluminum cover cap in place, the dew shield provides excellent protection against dust and physical damage to the corrector plate during storage. However, be aware that its 12.4" length will increase the overall stored length of your optical tube.

  • Material Aluminum with plastic attachement clips, interior velvet lined
    Cover Cap Aluminum - included
    Weight 1.8 lbs (.81 kg)
    Dimensions 9.5" (241.3mm) diameter x 12.4" (314.96mm) long
    Cable Slot Dimensions 1.25" (31.75mm) wide x 1.5" (38.1mm) long
    Cover Cap Weight 9.6 oz (272.15 g)

    • Aluminum Dew Shield - 8"

      × 1

    • Aluminum Cover Cap

      × 1

    • Celestron Logo Labels

      × 2

  • Celestron 2-Year Warranty