Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)
Eclipsmart Universal Solar Filter (44428)


Eclipsmart Universal Solar Filter (44428)

Regular price
$ 19.95 Sold out
Sale price
$ 19.95
Unit price

We are out of stock of the Universal Solar Filters. If you are looking for an alternative for the Solar Eclipse, please check out our Astrosolar film



  • SOLAR SAFE TELESCOPE FILTER: Filter conforms to the ISO 12312-2:2015(E) international safety standard for filters directly viewing the Sun. The ideal tool for viewing eclipses, sunspots, or the Sun any day!
  • WORKS WITH YOUR EXISTING TELESCOPE, SPOTTING SCOPE, OR DSLR CAMERA: Compatible with objective lenses with an outside diameter of 75mm to 100mm.
  • SAFE, SNUG FIT: To use, adjust the side panels to fit the filter on your optical device and attach the rubber band for a secure fit.
  • COMPACT AND PORTABLE: Filter folds flat for storage in its reusable bag when not in use.
  • SOLAR FILM MADE IN THE USA: Our Solar Safe film is produced in the USA by American Paper Optics, one of the suppliers recommended by NASA for safe solar viewing.
  • GREAT VIEWS AND IMAGES: This filter features an orange tint, producing a natural look perfect for visual observing and capturing images through your scope or camera.


Turn your telescope, spotting scope, or DSLR camera into a solar scope! The EclipSmart Universal Solar Filter is a must-have accessory perfect for viewing the Sun and eclipses like the upcoming 2023 Annular Solar Eclipse and 2024 Total Solar Eclipse. Affordable, easy to use, and best of all, Solar Safe, this filter conforms to the ISO 12312-2:2015(E) international safety standard. The EclipSmart Universal Solar Filter works with any optic or lens measuring 75 to 100 mm in diameter, including telescopes, spotting scopes, and DSLR camera lenses. The solar filter fits around your optical device with adjustable side panels that secure with a rubber band for a snug fit. We include (2) rubber bands, but we recommend that you change out the bands frequently.  To replace use #32 rubber bands. When it’s not in use, fold the filter flat and place it inside the reusable bag.

If you plan to use this filter with your DSLR camera, we recommend adding a sunshade to the camera lens. This will expand the lens diameter and allow for a more secure attachment to the filter using the rubber bands. We also recommend using a tripod, monopod, or other stabilizing device with your camera setup. You can use your camera and filter intermittently over extended periods of up to several hours, but do not point your camera and filter directly at the Sun for more than three continuous minutes. 

Never use this filter if your camera has an optical viewfinder. If you are uncertain about the type of viewfinder on your camera, do not use this filter. Always ensure that the filter is placed directly onto the camera lens during imaging, never between the viewfinder and your eye.

If you would like to use tape to secure the filter to your optic, Celestron recommends low-tack painter's tape to prevent any potential damage to your optic.

Solar Safe Technology

EclipSmart solar products feature Solar Safe filter technology—the ultimate protection from harmful solar radiation, including IR and UV light, plus 99.999% of visible light. Celestron Solar Safe filter technology is SAFE for direct observation of the Sun and has been independently tested to conform to and meet the transmission requirements of ISO 12312-2:2015(E), Filters for Direct Observation of the Sun, EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and AS/NZS 1338.1:2012, Filters for Eye Protectors.

Important safety note: inspect your filter before every use. Do not use and discard if damaged, torn, punctured, or separated from the frame in any way.


Upcoming Eclipses

2023 - On October 14, 2023, the famed “Ring of Fire” will encircle a darkened Moon during a spectacular annular eclipse.  This special type of partial solar eclipse occurs when the Moon is too far from Earth to cover the Sun completely. The Sun's corona is not visible during an annular eclipse. Click here for more info.

2024 - On April 8, 2024, the Moon will completely cover the Sun during an awe-inspiring Total Solar Eclipse. Observers within the path of totality will witness the sun’s dazzling corona, observe the “diamond ring” effect, and see day turn to night. Click here for more info.


Weight: 1.5 oz (43 g)
Optical Range Fitment: Outside diameter of 75mm to 100mm (2.95" to 3.93") of the objective housing
Compatible Celestron Products: 21039 PowerSeeker 50AZ
21041 PowerSeeker 60AZ
21087 PowerSeeker 80AZS
21043 PowerSeeker 60EQ
21037 PowerSeeker 70 EQ
21048 PowerSeeker 80EQ
21038 Travel Scope 50
22007 Travel Scope 60 DX
22005 National Park Foundation Travel Scope 60
21035 Travel Scope 70
22035 Travel Scope 70 DX
21135 Pop Sci Travel Scope 70
22030 Travel Scope 80
21073 AstroMaster LT 60 AZ
21061 AstroMaster 70 AZ
21074 AstroMaster LT 70 AZ
21062 AstroMaster 70 EQ
21082 AstroMaster 80 AZS
21182 Pop Sci AstroMaster 80 AZS
21064 AstroMaster 90 EQ
21063 AstroMaster 90 AZ
22201 Astro Fi 90mm Refractor
22451 StarSense Explorer LT 80 AZ
52304 Regal M2 16-48X 65mm ED Angled Zoom
52305 Regal M2 20-60X 80mm ED Angled Zoom
52248 Ultima 18-55X 65mm ED Angled Zoom
52348 Ultima 18-55X 65mm ED Angled Zoom w/smartphone Adapter
52250 Ultima 20-60X 80mm ED Angled Zoom
52254 Ultima 20-60X 80mm ED Straight Zoom
52350 Ultima 20-60X 80mm ED Angled Zoom w/smartphone adapter
52238 C70 Mini Mak
52422 LandScout 12-36X 60mm Angled Zoom w/tabletop tripod
52322 LandScout 12-36X 60mm Angled Zoom w/tabletop tripod and smartphone adapter
53329 Pop Sci LandScout 12-36X 60mm Angled Zoom w/tabletop tripod and smartphone adapter
52330 TrailSeeker 16-48X 65mm Angled Zoom
52332 TrailSeeker 20-60X 80mm Angled Zoom
Dimensions: Folded: 241mm x 108mm x 6.35mm (9.5" x 4.24" x .25")
Assembled: 63.5mm x 114.3 x (2.5" x 4.5" x 4.0")
Package: 273mm x 127mm x 9.5mm (10.75" x 5" x .375")
Includes: (1) EclipSmart Universal Folding Solar Filter
(2) #32 Rubber Bands
(1) Re-usable clear plastic locking bag
Solar Warning
  • Only observe the Sun with ISO-compliant eye protection, such as the filter found in this EclipSmart product. Never look directly at the Sun with the naked eye or a non-filtered optic. Permanent and irreversible eye damage may result.
  • Never tamper with or remove the permanently placed glass filters in this optic. Doing so is dangerous and will void your warranty.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with its correct operating procedures is with your optic at all times, especially when children are present.
  • Never remove your eye protection when looking directly at the Sun during partial phases of a solar eclipse.
California Residents

WARNING: Cancer and Reproductive Harm -

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