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✦ BORTLE GRADIENT
GoStargazing
OBSERVATORY · V1
000°
TELEMETRY
Acquiring…
Astrophotography
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Stargazing
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GoStargazing · Observatory
Tonight's sky,
rendered from live forecast data
Atmospheric telemetry · Milky Way band · Cloud-stack shading · AI-adjusted Bortle index.
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Bortle Gradient
Explore nine iconic sites across the light-pollution spectrum — from Cerro Paranal to Manhattan.
Launch demo →
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Use My Location
Share your coordinates to render tonight's sky from the live forecast at your exact spot on Earth.
Share location →
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Pick on Map
Choose any point on an interactive light-pollution map of North America and open it in the observatory.
Open map →
Observatory · Acquiring