The double-diamond-ring effect seen during the hybrid solar eclipse of 3 November 2013 (eso1822f)
Celestial event

Where to watch the August 12 eclipse in Spain: a region-by-region guide

The path of totality on August 12 sweeps across northern Spain from Galicia to the Balearic Islands. Every region inside the path delivers totality — but the Sun sits between 2° and 11° above the western horizon when it happens, and that changes everything about where you should stand. At 10° altitude the Sun is about one fist-width above the horizon at arm’s length. At 5° it’s half a fist. At 2° you’d lose it behind a two-storey building from 100 m away. One badly placed apartment block, one hilltop in the wrong direction, one row of pines — and you miss totality entirely. ...

June 25, 2026 · 7 min · Andreas Ioannou
Partial Solar Eclipse in New Orleans
Gear

What solar filter to buy for the August 12 eclipse

The August 12 total solar eclipse is 55 days out. If you’re planning to photograph it, point a telescope at it, or just watch the partial phases safely, you need a solar filter. Prices are still normal and stock is still available. By late July neither will be true. Here’s what the numbers on the label mean, which filters are worth the money, and what I’m packing for Spain. The one number on every solar filter: optical density Every solar filter blocks a fraction of the Sun’s light. The spec you care about is optical density (OD), a logarithmic scale. OD 5 means only 10^-5 of the incoming light gets through — one hundred-thousandth. OD 4 passes ten times more. That factor of ten is the line between safe for your eyes and not. ...

June 18, 2026 · 7 min · Andreas Ioannou
Total solar eclipse showing the Sun's corona radiating outward from behind the Moon's dark silhouette
Celestial event

Europe's first total solar eclipse in 27 years arrives on August 12 — at sunset

On August 12, 2026, at 18:28 UT, the Moon’s shadow will touch down on the coast of Galicia in northwestern Spain. For about 1 minute 50 seconds in Oviedo — less in Bilbao, more in León — the Sun will disappear behind the Moon while sitting roughly 10° above the western horizon. It will be the first total solar eclipse visible from mainland Europe since August 11, 1999. Totality happens at sunset, during the Perseid meteor shower peak, under a new moon. For anyone in the path, the sequence is: watch the Sun vanish near the horizon, turn east, and count Perseids across a moonless sky all night. ...

June 13, 2026 · 7 min · Andreas Ioannou