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    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/043/0010

    • Keywords

       

      Optical telescope; liquid mirror telescope; instrumentation.

    • Abstract

       

      The 4m international liquid mirror telescope (ILMT) installation activities have recently been completed at the Devasthal observatory (Uttarakhand, India). The ILMT will perform continuous observation of a narrow strip of the sky ($\sim$27$'$) passing over the zenith in the SDSS $g'$, $r'$ and $i'$ bands. Incombination with a highly efficient 4k$\times$4k CCD camera and an optical corrector, the images will be secured at the prime focus of the telescope using the time delayed integration technique. The ILMT will reach $\sim$22.5mag ($g'$-band) in a single scan and this limiting magnitude can be further improved by co-adding the nightly images. The uniqueness of the one-day cadence and deeper imaging with the ILMT will make it possible to discover and study various galactic and extra-galactic sources, specially variable ones. Here, we present the latest updates of the ILMT facility and discuss the preparation for the first light, which is expected during early 2022. We also briefly explain different steps involved in the ILMT data reduction pipeline.

    • Author Affiliations

       

      BRAJESH KUMAR1 VIBHORE NEGI1 2 BHAVYA AILAWADHI1 2 SAPNA MISHRA3 BIKRAM PRADHAN4 KUNTAL MISRA1 PAUL HICKSON5 JEAN SURDEJ6 7

      1. Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263001, India.
      2. Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur 273009, India.
      3. Inter University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411007, India.
      4. Indian Space Research Organization, Antariksh Bhavan, New BEL Road, Bengaluru 560231, India.
      5. Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada.
      6. Institute of Astrophysics and Geophysics, University of Lie`ge, Alle´e du 6 Aouˆ t 19c, 4000, Lie`ge, Belgium.
      7. Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Sloneczna 36, 60-286 Poznan, Poland.

    • Dates

       
      Published
      22 February 2022
      Manuscript received
      4 October 2021
      Accepted
      15 November 2021
      Final version published online
      22 February 2022

  • Journal of Astrophysics and Astronomy | News

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      Posted on January 27, 2016

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