# <img src="https://raw.githubusercontent.com/steveberardi/starplot/main/docs/images/favicon.svg" width="48" style="vertical-align:middle"> Starplot
**Starplot** is a Python library for creating star charts and maps of the sky.
- ⭐ **Zenith Plots** - shows the entire sky at a specific time and place
- 🗺️ **Map Plots** - including many map projections
- 🌃 **Horizon Plots** - shows the horizon at a specific time and place
- 🔭 **Optic Plots** - shows what you'll see through an optic (e.g. telescope) at a specific time and place
- 🪐 **Planets and Deep Sky Objects (DSOs)** - more than 14,000 objects built-in
- 🎨 **Custom Styles** - for all objects
- 📥 **Export** - png, svg, jpeg
- 🚀 **Data Backend** - powered by DuckDB + Ibis for fast object lookup
- 🧭 **Label Collision Avoidance**
## Examples
*Zenith plot of the stars from a specific time/location:*
*Map around the constellation Orion:*
*The Pleiades star cluster, as seen through a refractor telescope from a specific time and location:*
## Basic Usage
To create a star chart for tonight's sky as seen from [Palomar Mountain](https://en.wikipedia.org/wiki/Palomar_Mountain) in California:
```python
from datetime import datetime
from zoneinfo import ZoneInfo
from starplot import ZenithPlot, Observer, styles, _
tz = ZoneInfo("America/Los_Angeles")
dt = datetime.now(tz).replace(hour=22)
observer = Observer(
dt=dt,
lat=33.363484,
lon=-116.836394,
)
p = ZenithPlot(
observer=observer,
style=styles.PlotStyle().extend(
styles.extensions.BLUE_MEDIUM,
),
resolution=4096,
autoscale=True,
)
p.constellations()
p.stars(where=[_.magnitude < 4.6])
p.constellation_labels()
p.horizon()
p.export("starchart.png")
```
## Documentation
[https://starplot.dev](https://starplot.dev)
## Demo
For a demo of Starplot's zenith plots, check out:
[Sky Atlas - Star Chart Creator](https://skyatlas.app/star-charts/)
## Discord
Chat with other starplotters on our Discord server:
https://discord.gg/WewJJjshFu
## Contributing
Contributing to Starplot is welcome and very much appreciated! Please see [here](CONTRIBUTING.md) for details.
## Coming Soon
- 🧮 Coordinate system helpers
- 🌑 Planet moons
- ✴️ Custom markers
- ☄️ Comet model
- 😄 🔭 Clear skies
See more details on the [Public Roadmap](https://trello.com/b/sUksygn4/starplot-roadmap)
## License
[MIT License](https://github.com/steveberardi/starplot/blob/main/LICENSE)
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"description": "# <img src=\"https://raw.githubusercontent.com/steveberardi/starplot/main/docs/images/favicon.svg\" width=\"48\" style=\"vertical-align:middle\"> Starplot\n\n\n\n\n\n**Starplot** is a Python library for creating star charts and maps of the sky.\n\n- \u2b50 **Zenith Plots** - shows the entire sky at a specific time and place\n- \ud83d\uddfa\ufe0f **Map Plots** - including many map projections\n- \ud83c\udf03 **Horizon Plots** - shows the horizon at a specific time and place\n- \ud83d\udd2d **Optic Plots** - shows what you'll see through an optic (e.g. telescope) at a specific time and place\n- \ud83e\ude90 **Planets and Deep Sky Objects (DSOs)** - more than 14,000 objects built-in\n- \ud83c\udfa8 **Custom Styles** - for all objects\n- \ud83d\udce5 **Export** - png, svg, jpeg\n- \ud83d\ude80 **Data Backend** - powered by DuckDB + Ibis for fast object lookup\n- \ud83e\udded **Label Collision Avoidance**\n\n## Examples\n*Zenith plot of the stars from a specific time/location:*\n\n\n*Map around the constellation Orion:*\n\n\n*The Pleiades star cluster, as seen through a refractor telescope from a specific time and location:*\n\n\n## Basic Usage\n\nTo create a star chart for tonight's sky as seen from [Palomar Mountain](https://en.wikipedia.org/wiki/Palomar_Mountain) in California:\n\n```python\nfrom datetime import datetime\nfrom zoneinfo import ZoneInfo\n\nfrom starplot import ZenithPlot, Observer, styles, _\n\ntz = ZoneInfo(\"America/Los_Angeles\")\ndt = datetime.now(tz).replace(hour=22)\n\nobserver = Observer(\n dt=dt,\n lat=33.363484,\n lon=-116.836394,\n)\n\np = ZenithPlot(\n observer=observer,\n style=styles.PlotStyle().extend(\n styles.extensions.BLUE_MEDIUM,\n ),\n resolution=4096,\n autoscale=True,\n)\np.constellations()\np.stars(where=[_.magnitude < 4.6])\np.constellation_labels()\np.horizon()\np.export(\"starchart.png\")\n```\n\n## Documentation\n\n[https://starplot.dev](https://starplot.dev)\n\n\n## Demo\nFor a demo of Starplot's zenith plots, check out: \n\n[Sky Atlas - Star Chart Creator](https://skyatlas.app/star-charts/)\n\n## Discord\n\nChat with other starplotters on our Discord server:\n\nhttps://discord.gg/WewJJjshFu\n\n## Contributing\n\nContributing to Starplot is welcome and very much appreciated! Please see [here](CONTRIBUTING.md) for details.\n\n## Coming Soon\n- \ud83e\uddee Coordinate system helpers\n- \ud83c\udf11 Planet moons\n- \u2734\ufe0f Custom markers\n- \u2604\ufe0f Comet model\n- \ud83d\ude04 \ud83d\udd2d Clear skies\n\nSee more details on the [Public Roadmap](https://trello.com/b/sUksygn4/starplot-roadmap)\n\n## License\n[MIT License](https://github.com/steveberardi/starplot/blob/main/LICENSE)\n",
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