Welcome to Starplot

[Python] [PyPI] [License] [GitHub Workflow Status]

Starplot is a Python library for creating star charts and maps of the sky

Maps - including 10+ customizable projections
Zenith Charts - shows the entire sky at a specific time and place
Horizon Charts - shows the horizon at a specific time and place
Optic Simulations - shows what you'll see through an optic (e.g. telescope) at a specific time and place
Galactic Charts - shows a Mollweide projection in galactic coordinates
Planets and Deep Sky Objects (DSOs) - with support for plotting their true extent
Comets and Satellites - easy trajectory plotting
Custom Styles - for all objects and with 8+ built-in themes
Export - png, svg, jpeg
Data Backend - powered by DuckDB + Ibis for fast object lookup
Custom Data Catalogs - with helpers for building and optimizing
Label Collision Avoidance - ensuring all labels are readable
Localization - label translations for Chinese, Dutch, French, Italian, Lithuanian, Persian, and Spanish

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Example charts and maps created with Starplot:

[star_chart_basic.png]

Zenith chart of the stars from a specific time/location (source code)

[map_orion.png]

Map around the constellation Orion (source code)

[horizon_gradient.png]

Horizon chart that shows the sky looking South from Stonehaugh, England at 11:30pm (source code)

[optic_m45.png]

Optic simulation that shows what The Pleiades looked like through a refractor telescope on December 16, 2023 at 9pm PT from Palomar Mountain in California (source code)

Check out more examples...