7 releases (stable)
1.3.1 | Sep 15, 2024 |
---|---|
1.3.0 | Sep 14, 2024 |
0.1.0 | Sep 10, 2024 |
#8 in Rendering engine
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1MB
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starfinder
starfinder
is a Rust & Python package that provides functionality to read, process, and render star data from the Tycho-2 catalog. It's built with Rust for performance and exposes a Python API for ease of use.
Pictured above: Example Starfinder output
Here is a real result of successful analysis of an image generated by the renderer, submitted to nova.astrometry.net. The location that the engine calculated was accurate to ~1/10th of a second. This is likely attributable to rendering techniques that can be improved moving forward (there are already ideas in the pipeline).
Setup
-
Download the Tycho-2 catalog:
- Visit https://archive.eso.org/ASTROM/TYC-2/data/
- Download
catalog.dat
and place it indata/tycho2/
-
Ensure your project structure looks like this:
.
├── Cargo.lock
├── Cargo.toml
├── README.md
├── data
│ └── tycho2
│ ├── catalog.dat
│ ├── index.dat
│ ├── suppl_1.dat
│ └── suppl_2.dat
├── poetry.lock
├── pyproject.toml
└── src
Running the Renderer
Using Cargo (Rust)
Running the renderer
To run the renderer with default settings:
cargo run --release
To run with custom arguments:
cargo run --release -- --roll 0.0 --fov-w 75.0 --fov-h 50.0
Command-line Arguments
Flag | Description | Default | Notes |
---|---|---|---|
--center-ra | FOV center point right ascension | 180.0 | In degrees |
--center-dec | FOV center point declination | 0.0 | In degrees |
--fov-w | Width of FOV | 60.0 | In degrees |
--fov-h | Height of FOV | 45.0 | In degrees |
--roll | Camera sensor roll | 0.0 | In degrees |
--fov_max | Maximum FOV | 60.0 | In degrees |
--max-magnitude | Maximum visual magnitude | 12.0 | Lower is brighter |
--lambda-nm | Targeted wavelength | 540.0 | In nanometers |
--pixel-size-m | Simulated sensor pixel size | 3e-6 | In meters |
--width | Output image width | 800 | In pixels |
--height | Output image height | 800 | In pixels |
--output, -o | Output filename | renders/star_map.png |
Python Installation and Usage
Installation
Ensure you have Python 3.8 or later, then:
pip install starfinder
Or if you want to install the package in development mode:
pipx install maturin
maturin develop
Basic Usage
from starfinder import StarCatalogArgs, process_star_catalog_py
args = StarCatalogArgs(
source="data/optimized.dat",
center_ra=180.0,
center_dec=0.0,
fov_w=60.0,
fov_h=45.0,
roll=0.0,
max_magnitude=6.0,
lambda_nm=540.0,
pixel_size_m=3e-6,
width=800,
height=600,
output="renders/star_map.png"
)
process_star_catalog_py(args)
API Reference
StarCatalogArgs
Parameters:
source
(str): Path to the Tycho-2 catalog filecenter_ra
(float): Right Ascension of FOV center (degrees)center_dec
(float): Declination of FOV center (degrees)fov_w
(float): FOV width (degrees)fov_h
(float): FOV height (degrees)roll
(float): Camera roll (degrees)max_magnitude
(float): Maximum visual magnitudelambda_nm
(float): Targeted wavelength (nanometers)pixel_size_m
(float): Sensor pixel size (meters)width
(int): Output image width (pixels)height
(int): Output image height (pixels)output
(str): Output image filename
process_star_catalog_py(args: StarCatalogArgs) -> None
Processes the star catalog based on the provided arguments.
Contributing
Contributions to starfinder
are welcome! Please feel free to submit a Pull Request.
License
This project is licensed under the GPLv3 License - see the LICENSE file for details.
Dependencies
~12–24MB
~353K SLoC