I've chased the 'false dawn' for years — this is the week to find and photograph it

Some stargazing feels like you know exactly what you are looking for, but you're still slightly unsure whether you are actually seeing it. Zodiacal light — meaning "light from the circle of animals" — is often like that.

I have chased this so-called "false dawn" for years, and the first few minutes are always the same. I stare toward the horizon and wonder whether the sky is genuinely brighter there, or whether I am simply seeing distant light pollution, the first hint of morning twilight, or something my eyes have invented because I badly want to see it.

However, under a genuinely dark sky — and particularly in a long-exposure image — its cone shape becomes obvious.

Zodiacal light is enormous. It appears as a broad, softly glowing pyramid rising from the horizon. It can be fainter than the Milky Way and has no hard edges, which is precisely why it is so easy to ov...