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Shashi Bhushan Pandey, Rama Kant Singh Yadav, Nandish Nanjappa, Shobhit Yadav, Bheemireddy Krishna Reddy, Sanjit Sahu & Ramaiyengar Srinivasan

First-light instrument for the 3.6-m Devasthal Optical Telescope: 4Kx4K CCD Imager

(Volume 87 - Année 2018 — Actes de colloques — First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India)
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Mots-clés : astronomie, astrophysique, instrumentation, observatoires, visible

Abstract

As a part of in-house instrument developmental activity at ARIES, the 4Kx4K CCD Imager is designed and developed as a first-light instrument for the axial port of the 3.6-m Devasthal Optical Telescope (DOT). The f/9 beam of the telescope having a plate-scale of ~6.4”/mm is utilized to conduct deeper photom-etry within the central 10' field of view. The pixel size of the blue-enhanced liquid nitrogen cooled STA4150 4Kx4K CCD chip is 15 µm, with options to select gain and speed values to utilize the dynamic range. Using the Imager, it is planned to image the central ~ 6.5’ x6.5’ field of view of the telescope for various science goals by getting deeper images in several broad-band filters for point sources and objects with low surface brightness. The fully assembled Imager along with automated filter wheels having Bessel UBV RI and SDSS ugriz filters was tested in late 2015 at the axial port of the 3.6-m DOT. This instrument was finally mounted at the axial port of the 3.6-m DOT on 30 March 2016 when the telescope was technically activated jointly by the Prime Ministers of India and Belgium. It is expected to serve as a general purpose multi-band deep imaging instrument for a variety of science goals including studies of cosmic transients, active galaxies, star clusters and optical monitoring of X-ray sources discovered by the newly launched Indian space-mission called ASTROSAT, and follow-up of radio bright objects discovered by the Giant Meterwave Radio Telescope.

Keywords : astronomy, astrophysics, instrumentation, observatories, visible

To cite this article

Shashi Bhushan Pandey, Rama Kant Singh Yadav, Nandish Nanjappa, Shobhit Yadav, Bheemireddy Krishna Reddy, Sanjit Sahu & Ramaiyengar Srinivasan, «First-light instrument for the 3.6-m Devasthal Optical Telescope: 4Kx4K CCD Imager», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 42 - 57 URL : https://popups.uliege.be/0037-9565/index.php?id=7478.

About: Shashi Bhushan Pandey

ARIES, Manora Peak, Nainital, UK, 263001, shashi@aries.res.in

About: Rama Kant Singh Yadav

ARIES, Manora Peak, Nainital, UK, 263001

About: Nandish Nanjappa

ARIES, Manora Peak, Nainital, UK, 263001

About: Shobhit Yadav

ARIES, Manora Peak, Nainital, UK, 263001

About: Bheemireddy Krishna Reddy

ARIES, Manora Peak, Nainital, UK, 263001

About: Sanjit Sahu

ARIES, Manora Peak, Nainital, UK, 263001

About: Ramaiyengar Srinivasan

Vemana Institute of Technology, Mahayogi Vemana Road, Bangalore, 560034