Bright Star Subtraction Pipeline for LSST: Progress Review

Astronomical Society of the Pacific Conference Series 2026 Open access

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Authors: Amir E. Bazkiaei, L. S. Kelvin, Sarah Brough, Simon J. O'Toole, A. E. Watkins, Morgen A. Schmitz
DOI: 10.26624/rfln9748
Cited by: 1

Abstract

We present the Bright Star Subtraction (BSS) pipeline for the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST). This pipeline generates an extended PSF model using observed stars and subtracts the model from the bright stars in LSST data. When testing the pipeline on Hyper Suprime-Cam (HSC) data, we find that the shape of the extended PSF model depends on the location of the detector on the camera’s focal plane. The closer a detector is to the edge of the focal plane, the less the extended PSF model is circularly symmetric. We introduce an algorithm that allows the user to consider the location dependency of the model.

Fields of Study & Subjects

Astronomy and Astrophysical Research Astronomical Observations and Instrumentation Adaptive optics and wavefront sensing

Publication details

Journal / source
Astronomical Society of the Pacific Conference Series
Publisher
Astronomical Society of the Pacific Conference Series
Volume
541
Pages
492–496
Publication date
28 February 2026
Language
EN