Will the EclipSmart filter fit non-Celestron 8" telescopes?
This filter is custom-designed for the 235mm external diameter of Celestron 8" SCT and EdgeHD optical tubes. While it might fit other telescopes with similar dimensions, you must verify the outer diameter of your specific telescope to ensure a safe, secure fit before purchasing. An unsecured filter is extremely dangerous.
How do I attach the EclipSmart Solar Filter to my NexStar 8SE?
To attach the filter, first apply the four 1" x 1" self-adhesive hook-and-loop tabs to the body of your telescope, spaced evenly around the front cell. Place the filter over the front of the telescope. Then, thread the two 1" x 4" hook-and-loop straps through the safety tabs on the filter housing and secure them tightly to the tabs on the telescope tube. Always check that the filter is secure before pointing the telescope at the Sun.
Can I see solar flares or prominences with the EclipSmart filter?
No. This is a white-light solar filter, designed for observing the Sun's surface (photosphere), which includes sunspots, granulation, and planetary transits. Solar flares and prominences are features of the chromosphere and require a specialized, narrow-band Hydrogen-alpha (H-alpha) telescope or filter to be seen.
What is the difference between the 176mm clear aperture and the 225mm internal diameter?
The 225mm internal diameter refers to the size of the filter's housing, designed to slip over the front of your 8" telescope. The 176mm clear aperture is the usable diameter of the solar filter material itself. This size is large enough to ensure that the entire primary mirror of your telescope is illuminated without being obstructed by the filter's frame.
How do I clean and store my EclipSmart solar filter?
Gently blow off any loose particles with a hand-blower. If further cleaning is needed, use a soft, lint-free cloth with a non-abrasive optical cleaning solution. Avoid harsh chemicals. Always inspect the filter for scratches or damage before each use. Store it in the included plastic protective case to prevent damage.
Is it safe to use this EclipSmart filter for imaging the Sun with my CPC 800?
Yes. The EclipSmart filter is safe for both visual observation and solar imaging. Because it fits over the front of the telescope, it rejects the Sun's energy before it enters the optical tube, keeping the internal components cool and safe. You can attach a planetary camera or DSLR to your CPC 800 as you normally would for astrophotography.
