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August 31, 2025

Starplot - New Version ๐ŸŽ‰

Starplot v0.16 ๐ŸŽ‰

GitHub / PyPi / starplot.dev

  • Adds support for gradient backgrounds - HUGE thanks to Elanor (@Niphredil123) ๐Ÿ™Œ โญ

  • Refactors projections, allowing you to change central RA/DEC

  • Adds equidistant and oblique Mercator projections

  • Introduces an Observer model to encapsulate a time and place

  • Makes zenith plots a separate plot type

  • Adds a function for plotting a star magnitude scale (experimental, feedback wanted!)

  • Adds more location options for legends and allows separate X/Y padding

  • Adds a settings class for managing global settings

  • Adds a global setting for how text is rendered in SVG exports

  • Adds more options for plotting gridlines on horizon plots (you can now label altitude)

  • Adds a common_names field to deep sky objects

  • Adds more public properties to plots (including magnitude_range and alt / az for optic plots)

  • Adds a BLUE_NIGHT style extension, which is a great alternative to the dark grayscale theme if you want colored markers

๐Ÿšจ This version includes multiple breaking changes, so I created a short migration guide thatโ€™ll help you see whatโ€™s changed.


๐Ÿš€ Coming Soon

In the next version of Starplot, v0.17, we plan to add support for:

  • Custom star catalogs

  • Custom sky cultures (constellations, star names)


๐Ÿ™‹ Help Wanted

Want to help make Starplot better? Here are a few things we need help with right now:

  • Sources for various sky cultures (ideally constellation lines defined by the HIP id of the stars)

  • How to calculate BV color index from Gaia EDR3 data

Read more about contributing here โ†—๏ธ


โœจ Showcase

Starplot was recently used to create a few star charts at a star party in China (thanks to @hongming for sharing!):


Thunkii is working on plots that show the paths of various comets and posting them on Wikipedia. Hereโ€™s one of 3I/ATLAS:

Have you created something using Starplot?

If you've used Starplot for a research paper, book, public outreach, or anything really (e.g. an app), we'd love to hear about it and share it in our next newsletter. Please reply to this email or chat with us on Discord to tell us more about your project.


๐Ÿ’™ Show your support for Starplot

  • Starplot stickers

  • All Sky Map - made with Starplot!


Thanks for reading, and happy starplotting!

Steve Berardi

steve@starplot.dev

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