Before the shoot · Planning

Light Pollution

Light pollution map: worldwide light pollution from VIIRS night-time satellite data (~500 m, z2–8), with the Bortle class 1–9 estimated automatically for your position or the centre of the map, a class legend and a plain reading of what each class actually lets you shoot. You can cache the current map area locally so it still works up in the hills with no signal. It answers "which way do I drive tonight, and how far, to get dark enough?". It and Astro are two modes of the same screen — entering from here lands you straight on the light pollution map.

When it helps

• light pollution
• light pollution map
• dark skies
• dark night
• Bortle
• Bortle scale
• what class is this sky
• where can I see the milky way
• where is it dark
• where to shoot the stars
• can I shoot stars in the city
• how far do I need to drive
• dark sites near me
• night sky brightness
• sky brightness
• artificial light at night
• stargazing spots
• bortle
• dark sky
• dark site
• where to see the milky way
• how far from the city

At a glance

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