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Celestron EclipSmart Solar Filter for 8" SCT & EdgeHD Telescopes - 94244

SKU: CEL-94244
To ensure that the solar filter you buy will fit properly, please take a few moments and measure the outside diameter of your telescope, spotting scope or binoculars before you order. Remember, the solar filter needs to fit snugly around the front of the tube assembly that holds the optics. If the filter is slightly larger than its diameter, the filter can be made to fit by the addition of self-stick felt spacers to the inside of the cell. However, if the filter is too small it will not fit, and that would be a shame. So please, measure before you order. Thanks.

Celestron EclipSmart Solar Filter for 8" SCT & EdgeHD Telescopes


  • Take your regular Celestron 8" Schmidt-Cassegrain Telescope or Celestron 8" EdgeHD Telescope and convert it into white light solar telescope.
  • With Celestron's ISO-certified, proprietary Solar Safe Mylar film, this Solar Filter provides a completely safe way to observe the forthcoming North American Total Solar Eclipse on August 21, 2017.
  • Made from the telescope's lens cap for an easy, snug fit. Includes two safety Velcro straps and four self-adhesive Velcro pads for keeping your solar filter fixed to your telescope.

This Celestron EclipSmart Solar Filter for Celestron 8" Schmidt-Cassegrain and EdgeHD telescopes will take your viewing experience to the next level while providing Solar Safe, ISO-compliant viewing. Comes with two Velcro straps and four self-adhesive Velcro pads to prevent the solar filter from slipping off unexpectedly for additional safety.

Suitable for use with the following telescopes:

  • 8" Advanced VX Schmidt-Cassegrain Telescope - 12026
  • 8" Advanced VX EdgeHD - 12031
  • CPC 800 GPS (XLT) Computerized Telescope - 11073-XLT
  • CPC Deluxe 800 HD Computerized Telescope - 11008
  • NexStar 8SE Computerized Telescope - 11069
  • 8" NexStar Evolution - 12091
  • 8" Nexstar Evolution HD with StarSense - 12096
  • CGEM 800 Computerized Telescope - 11097
  • CGEM 800 HD Computerized Telescope - 11080
  • CGEM II 800 SCT - 12010
  • CGEM II 800 EdgeHD - 12017
  • CGX Equatorial 800 Schmidt-Cassegrain Telescope - 12050
  • CGX Equatorial 800 HD Telescope - 12055


Solar Safe Technology

Celestron's EclipSmart solar products contain Solar Safe filter technology for the ultimate protection from damaging solar radiation, blocking IR as well as UV light, and filtering out 99.999% of intense visible light. Independently tested by SAI Global Assurance Services, Celestron Solar Safe filter technology is GUARANTEED SAFE for direct solar observation.

What About Your Finderscope?

Adding this solar filter to your telescope will adequately filter the light coming through your focuser, but have you considered what you’ll do about your finder scope?

Here are some suggestions for dealing with your finder that will assure you do not damage your eyes (or anyone else’s) by looking at the Sun through your telescope’s unfiltered finder:

  • Remove Your Finder. Ditching your finderscope when solar viewing will remove the possibility of someone accidentally looking through it to spot the Sun. Of course, not having a finder makes centering the Sun in your eyepiece more difficult, but with practice, it can be done. Set the mount down so the telescope is pointing in the direction of the Sun. Put the main solar filter on so you can check your progress, and then move the telescope around until it casts a shadow that produces a nice, sharp silhouette of the scope. The OTA will look circular. Now move your telescope up or down with your hand controller, slow motion controls, or very carefully by hand if required while looking through the eyepiece. You will not get a warning when you are close, but you should be able to align with the Sun using this method. Practice ahead of time before any big event, like an eclipse, to make sure you’ve got the process down.
  • Filter Your Optical Finder. This solution is not recommended for a reflex or red dot finder since it is too easy to accidentally look around the window. If you have one of these finders we recommend you either remove it or replace it with a dedicated solar finder (see below).

    To make your optical finderscope safe for solar viewing you’ll need to buy a piece of Baader Solar Film for Visual Use. This film comes in different size sheets and cuts easily with scissors, allowing you to make your own filter. You can go super low-tech and use a rubber band to hold a piece of the film firmly around the finder or you can get fancy and build your own slip-on solar filter. However you attach the solar film, you need to make sure there are no light leaks at all and that it doesn’t accidentally fall off when you move your telescope around. Any unused film can store flat between two pieces of cardboard and will keep for years. It is nice to have around, just in case of a solar emergency :-)

  • Buy a Dedicated Solar Finder. Check out the Tele Vue Sol-Searcher Solar Finder. This special finder can only be used when observing the Sun, but it works very well. The Sol-Searcher is reasonably priced and can be attached to your telescope with Velcro or with #10-32 screws (user supplied).