Geographic basemap
OpenFreeMap vector tiles + OpenStreetMap provide geographic context for coordinate exploration.
Interactive map
Check Tonight first. Explore locations second.
The dashboard provides an interactive dark-sky coordinate map with modelled Bortle/SQM context, reference city markers, and a cloud/moon/aurora telemetry sidebar. Open the map, select a spot, and the sidebar populates with darkness estimates and forecast conditions.
Decision first
Tonight separates forecast inputs, observations and unavailable values.
Modelled darkness
Bortle class and SQM estimates from calibrated city-light-dome anchors and dark-sky references. Use as a planning guide.
Source boundaries
The interface labels live deliveries, forecasts, models and editorial guidance separately.
Founding Pro push
Use Tonight to decide. Use Pro to compare limited modelled alternatives.
Pro is for the night you are actually considering: top-three nearby candidate sites, distance-aware score, best-night scan and a session brief before you commit time, gear or fuel.
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