SkyRemembers

Data & attribution

Every map we render is built from open astronomical data. We're grateful to the people who maintain it.

Star catalog
HYG Database © David Nash / Astronomy Nexus, licensed CC BY-SA. We render stars to visual magnitude 6.5 — everything a perfect dark sky shows the naked eye.
Constellation lines & Milky Way outlines
From the data files of d3-celestial © Olaf Frohn (BSD-3-Clause); Milky Way outlines derived from Jose R. Vieira's outline catalog.
Astronomy calculations
Sidereal time via Astronomy Engine © Don Cross (MIT).
Location search
Geocoding by Nominatim, data © OpenStreetMap contributors (ODbL).
Typefaces
Cormorant Garamond and Inter, both under the SIL Open Font License.

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