An automated photometric pipeline for the ILMT data

Bhavya Ailawadhi; Talat Akhunov; Ermanno Borra; Monalisa Dubey; Naveen Dukiya; Jiuyang Fu; Baldeep Grewal; Paul Hickson; Brajesh Kumar; Kuntal Misra; Vibhore Negi; Kumar Pranshu; Ethen Sun; Jean Surdej

arXiv · 2311.04713

An automated photometric pipeline for the ILMT data

Bhavya Ailawadhi·Talat Akhunov·Ermanno Borra·Monalisa Dubey·Naveen Dukiya·Jiuyang Fu·Baldeep Grewal·Paul Hickson·Brajesh Kumar·Kuntal Misra·Vibhore Negi·Kumar Pranshu·Ethen Sun·Jean Surdej

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Abstract

The International Liquid Mirror Telescope (ILMT) is a 4-meter survey telescope continuously observing towards the zenith in the SDSS g', r', and i' bands. This survey telescope is designed to detect various astrophysical transients (for example, supernovae) and very faint objects like multiply-imaged quasars and low surface brightness galaxies. A single scan of a 22$'$ strip of sky contains a large amount of photometric information. To process this type of data, it becomes critical to have tools or pipelines that can handle it efficiently and accurately with minimal human biases. We offer a fully automated pipeline generated in Python to perform aperture photometry over the ILMT data acquired with the CCD in Time Delayed Integration (TDI) mode. The instrumental magnitudes are calibrated with respect to the Pan-STARRS-1 catalogue. The light curves generated from the calibrated magnitudes will allows us to characterize the objects as variable stars or rapidly decaying transients.

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Bhavya Ailawadhi, Talat Akhunov, Ermanno Borra, Monalisa Dubey, Naveen Dukiya, Jiuyang Fu, Baldeep Grewal, Paul Hickson, Brajesh Kumar, Kuntal Misra, Vibhore Negi, Kumar Pranshu, Ethen Sun, Jean Surdej. 2023-11-08. An automated photometric pipeline for the ILMT data. https://arxiv.org/abs/2311.04713

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