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Overview And Present Status Of The 4-m International Liquid Mirror Telescope (ILMT)

Jean SurdejInstitute of Astrophysics and Geophysics , Liège University , Allée du 6 Août 19c , 4000 Liège , BelgiumBhavya AilawadhiPhysical Research Laboratory , Ahmedabad 380009 , Gujarat , IndiaTalat AkhunovNational University of Uzbekistan , Department of Astronomy and Astrophysics , 100174 Tashkent , UzbekistanMonalisa DubeyMahatma Jyotiba Phule Rohilkhand University , Pilibhit Bypass Road , Bareilly 243006 , Uttar Pradesh , IndiaNaveen DukiyaMahatma Jyotiba Phule Rohilkhand University , Pilibhit Bypass Road , Bareilly 243006 , Uttar Pradesh , IndiaSara FilaliInstitute of Astrophysics and Geophysics , Liège University , Allée du 6 Août 19c , 4000 Liège , BelgiumPaul HicksonDepartment of Physics and Astronomy , The University of British Columbia , 6224 Agricul- tural Road , Vancouver , BC V6T 1Z1 , CanadaPriyanshi KumariAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaGokul Singh MehraAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaKuntal MisraAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaVibhore NegiKavli Institute for Astronomy and Astrophysics , Peking University , Beijing 100871 , ChinaAnna Pospieszalska-SurdejInstitute of Astrophysics and Geophysics , Liège University , Allée du 6 Août 19c , 4000 Liège , BelgiumKumar PranshuAryabhatta Research Institute of Observational Sciences , Manora Peak , Nainital , 263001 Ut- tarakhand , IndiaSarvesh YadavUniversity of Calcutta , 87/1 College Street , Kolkata 700073 , India

2026en

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Annotatsiya

The International Liquid Mirror Telescope (ILMT) is an inexpensive optical instrument with a diameter of 4 metres, entirely dedicated to astronomical surveys. Its scientific programmes include the detection and study of transients, variable objects, asteroids, comets, low surface brightness galaxies, space debris, etc. The telescope achieved its first light on 29 April 2022 and was officially inaugurated on 21 March 2023. It has been operating regularly since October 2023 and continuously observes the sky passing through the zenith using the SDSS $g^{\prime}$, $r^{\prime}$, and $i^{\prime}$ filters in a narrow band of the sky ($22.3^{\prime}$) centred around the equatorial declination of $+29°21^{\prime}41^{\prime \prime}$. Here we report on the astrometric and photometric performance of the ILMT and summarise the main results obtained since the BINA3 workshop. A great way to raise public awareness is to build a scale model of a liquid mirror telescope. General guidelines for doing so are provided.

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DOI: 10.48550/arxiv.2610.36707

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