casa-fits 1.0.3

A collection of image scripts supporting both FITS and CASA image formats.

CASA FITS

CASA FITS is a Python package for working with astronomical images in both FITS and CASA image formats. It provides tools for loading, analyzing, and visualizing astronomical images, with a focus on ease of use and integration with the scientific Python ecosystem.

Features

• Support for FITS and CASA image formats
• Image loading and conversion utilities
• Visualization: matplotlib-based image display, beam drawing, contour overlays
• Image analysis tools: radial and azimuthal cuts, radial profiles, peak detection, statistics

Installation

Requires Python 3.11-3.12.

Install via pip (after cloning the repository):

pip install casa-fits

Usage

Import the package and display the image:

from casa_fits import load_fits, load_image, imshow
import matplotlib.pyplot as plt

# Load a FITS image
img = load_fits("example.fits")
# Or CASA format image with specifying size
img = load_image("./example.image.pbcor", width=128, height=128)

# Display the image
fig, ax = plt.subplots(figsize=(6, 4))
# with title
imshow(ax, img, title="TWHya Continuum")
fig.tight_layout()
plt.show()

See more samples at sample directory (more sample codes will come soon...).

Modules Overview

• io: Functions for loading FITS and CASA images (load_fits, load_image).
• imshow, overlay_contour: Visualization utilities for displaying images and contours.
• radial_profile: Compute radial profiles of images.
• radial_cut, azimuth_cut: Extract radial and azimuthal cuts from images.
• detectpeak: Peak detection in images.
• imstat: Compute image statistics.

Documentation

Full documentation is available at https://akimasanishida.github.io/casa_fits/.

License

MIT License

Repository

https://github.com/akimasanishida/casa_fits