The safest way to observe the partial eclipse is to project the Sun via a pinhole, e.g. a punched card, a straw hat, crossing your fingers, underneath tree leaves, or simply via a tiny hole in a piece of aluminium foil or a card board. The projection method is also used by telescope observers, including here at Uccle.

You can also use eclipse glasses or a welder’s glass 14, or -when using a telescope- put a dedicated solar filter in front of the telescope. All three examples reduce the solar light to levels that are safe for your eyes. Ordinary sunglasses, CD-roms, or photo negatives should not be used.