Photometry

Comparison of PSF reconstruction showing a cutout of a bright point source and four recovery methods at 4x resolution as well as their residuals.

📄 Pixellated Posterior Sampling of Point Spread Functions in Astronomical Images

A framework for fully probabilistic, pixel-level inference of the point spread function directly from astronomical images, enabling principled uncertainty quantification in downstream photometric analyses.

A multi-band, multi-object fitting example with AstroPhot. Fitting seven bands from UV to IR, showing the data, model, and residuals.

💻 AstroPhot: Fitting Everything Everywhere All at Once in Astronomical Images

AstroPhot is a Python package for simultaneous multi-band, multi-object photometric fitting of astronomical images using automatic differentiation and GPU acceleration.

AstroPhot

AstroPhot is a Python package for simultaneous multi-band, multi-object photometric fitting of astronomical images using automatic differentiation and GPU acceleration.

📄 PROBES-I: A Compendium of Deep Rotation Curves and Matched Multiband Photometry

PROBES-I presents a homogenised catalogue of 3163 deep optical rotation curves with matched multiband photometry for late-type galaxies, enabling precision tests of galaxy structure and dark matter models.

Example isophotal ellipse fit on a spiral galaxy using AutoProf.

💻 AutoProf: An Automated Non-Parametric Light Profile Pipeline for Modern Galaxy Surveys

AutoProf is an automated pipeline for extracting non-parametric surface brightness profiles from galaxy images, designed to scale to the large datasets of modern wide-field surveys.

AutoProf

AutoProf is an automated pipeline for extracting non-parametric surface brightness profiles from galaxy images, designed to scale to the large datasets of modern wide-field surveys.