Millions are expected to witness a total solar eclipse sweeping across parts of Europe on August 12, with Spain anticipated to see a boost in tourism as enthusiasts flock to the path of totality. While Greenland, western Iceland, and a corner of Portugal will also experience the eclipse, much of the Northern Hemisphere will see a partial view.
This event follows a surge in interest for the 2024 North American eclipse, where many documented the phenomenon with their smartphones. Capturing an eclipse presents unique challenges, primarily drastic changes in lighting. Smartphone users can optimize their shots by considering location, weather, and device capabilities.
Location is paramount for those traveling to view the eclipse. Being close to the path of totality is ideal. The European Space Agency provides a map of Spain detailing the duration of totality, while eclipse expert Xavier Jubier's website offers a Google Maps overlay for street-level planning. As the eclipse approaches sunset in most European locations, finding a high vantage point with a clear western horizon is advisable. Checking weather forecasts and cloud coverage apps like Astrospheric can help identify areas with clearer skies.
Smartphone Camera Considerations
While professional DSLR cameras offer greater detail, smartphones can still yield good results. Newer models with sophisticated sensors, multiple lenses, and image stabilization software are advantageous. Many phones also feature exposure controls that can adjust for the eclipse's tricky lighting. However, smartphone cameras can struggle with astronomical photography, tending to overexpose bright objects like the corona and have difficulty focusing on dimmer celestial bodies.
To compensate, zooming in can help make the subject appear larger. It is crucial to avoid using the camera's flash, as it will be ineffective and can disrupt others' viewing experience. Beyond the sky, photographers are encouraged to capture the surrounding landscape, which will be bathed in unique lighting and shadows. NASA suggests looking for natural pinholes created by tree leaves projecting miniature eclipse replicas on the ground, which can yield exceptional wide-angle imagery.
Safety First
For those photographing the sun during the partial phases, protecting the camera lens is essential. The Solar Snap filter, certified to the ISO 12312-2 international standard for solar filters, is recommended for smartphones. Alternatively, a pair of eclipse glasses can be placed over the lens as a low-cost DIY solution, a method successfully used by millions during recent eclipses in the Americas. It is also important to wear eclipse glasses when looking at the sun to align the shot. Concerns about counterfeit eclipse glasses are prevalent, with online marketplaces reportedly flooded with uncertified products that can cause permanent eye damage. Resources from Eclipse Seguro and the American Astronomical Society list vetted models.
Technical Tips for Shooting
Using a tripod can ensure steady shots, especially for extended shooting periods. Covering gear with a white towel can help prevent overheating while waiting for the eclipse. To avoid camera shake when pressing the shutter button, using a smartwatch app or a timer is recommended.
Even when filming the eclipse, direct viewing of the sun through a phone screen is discouraged due to the potential reflection of harmful ultraviolet light. While capturing a selfie video, viewers are warned that the phone's screen could reflect harmful ultraviolet light, posing a risk to eyesight.