OUR LATEST AstroSolar ARTICLES

On 12 August 2026, Germany will experience an impressive partial solar eclipse. Learn where to find an unobstructed view of the low Sun, how the atmosphere affects visibility and which protection is required for safe observation.

A practical test of the new AstroSolar® ClearWhite Safety Film OD 5.1 with a 155 mm refractor: visual impressions, photographic results and a direct comparison with the previous OD 5.0 film, complemented by a personal review of earlier methods of solar observation.

In June 2026, I was able to test a first sample of the revised version of the proven AstroSolar® film. The has a slightly higher optical density than its predecessor from 1999 and complies with...

For a few days now, warnings have been circulating in which Amazon questions the safe use of AstroSolar® and Celestron EclipSmart® solar filters. In this blog post, we explain why these warnings are based on a misinterpretation, which technical and normative backgrounds are relevant and why both product lines are absolutely safe when used properly.

In just under a month, an annular Solar eclipse will take place on the morning of Thursday June 10th. An annular eclipse occurs when the Moon passes between the Earth and the Sun but the...

For years our colleagues Martin Rietze and Michael Risch have been hunting for the next solar eclipse in the most remote places in the world. See e.g. our previous blog posts, some on AstroSolar.com: 2015...

AstroSolar® Photo Film OD 3.8 On April 14th, Philipp Salzgeber was able to catch the ISS while passing in front of the sun. For this, he used a filter made from AstroSolar® Photo Film...

Don't miss out to read customers comments and our detailed replies below. Update August 17th, 2017: Quote below from news article AAS spokesman on Amazon recall, fake products, safe eclipse viewing Amazon screwed up. I've...