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Coronado SME-40 40mm Double Stacking Etalon

Coronado SolarMax II 40 mm Double Stacking Etalon with RichView Tuning Filter - SME-40

  • Filtering Wavelength: H-Alpha
  • Aperture: 40 mm
  • Double-stack etalon is only for use with single-stack 40 mm SolarMax filters & telescopes.
  • Takes 0.7A single stack to 0.5A for more detail.
  • WARNING: DO NOT USE ALONE, for Double-Stacking only!
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Viewing a solar eclipse doesn’t have to be a hassle. We have all of the solar viewing equipment you need to enjoy stellar views of the Sun while protecting your eyes. High Point Scientific has assembled an array of products from the top manufacturers in the industry, including Celestron, Coronado, Lunt, Baader, and many more. From solar filters to finders we are confident you will find what you are looking for.

There are certain precautions you must take in order to safely view the Sun. Before viewing, always inspect your filters and accessories and do not use if there is any sign of damage. Older solar filters recommend discarding the product after 3 years, as the filter gradually loses its effectiveness. However, this is not the case for many modern Sun-viewing accessories. Always consult an expert to confirm if you can safely use your older solar filters.

Another option for viewing a partially eclipsed Sun safely is via pinhole projection. There are pinhole projectors you can make out of a cereal box so you can view the shadow of a partially eclipsed Sun. Or you can even loosely criss-cross your fingers into a waffle pattern and look at your hands’ shadow on the ground. The tiny spaces between your fingers will project a grid of small crescent images on the ground of the Sun in a partial eclipse. Again, never look directly at the Sun without proper eye protection. Viewing the Sun without protective eyewear can lead to permanent eye damage.

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