IIA Institutional Repository

Browsing by Author "Angchuk, D"

Browsing by Author "Angchuk, D"

Sort by: Order: Results:

  • Hanle echelle spectrograph: design and performance 
    Sriram, S; Amit Kumar; Arun Surya; Sivarani, T; Giridhar, S; Kathiravan, S; Anand, M. N; Jones, D; Grobler, D; Jakobsson, R; Anantha, Ch; Athira Unni; Angchuk, D; Tsewang, D; Gyalson, T (SPIE-The International Society for Optical Engineering, 2018-07-06)
    Hanle echelle spectrograph (HESP) is a high resolution, bench mounted, fiber-fed spectrograph at visible wavelengths. The instrument was recently installed at the 2m Himalayan Chandra Telescope (HCT), located at Indian ...
  • India's First Robotic Eye for Time-domain Astrophysics: The GROWTH-India Telescope 
    Kumar, Harsh; Bhalerao, Varun; Anupama, G. C; Barway, Sudhanshu; Basu, Judhajeet; Deshmukh, Kunal; De, Kishalay; Dutta, Anirban; Fremling, Christoffer; Iyer, Hrishikesh; Jassani, Adeem; Joharle, Simran; Karambelkar, Viraj; Khandagale, Maitreya; Krishna, K Adithya; Kulkarni, Sumeet; Mate, Sujay; Patil, Atharva; Phanindra, D. V. S; Samantaray, Subham; Sharma, Kritti; Sharma, Yashvi; Shenoy, Vedant; Singh, Avinash; Srivastava, Shubham; Swain, Vishwajeet; Waratkar, Gaurav; Angchuk, D; Dorjay, Padma; Dorjai, T; Gyalson, T; Jorphail, S; Mahay, T. T; Norbu, Rigzin; Sharma, Tarun Kumar; Stanzin, Jigmet; Stanzin, Tsewang; Stanzin, Urgain (American Astronomical Society, 2022-09-01)
    We present the design and performance of the GROWTH-India telescope, a 0.7 m robotic telescope dedicated to time-domain astronomy. The telescope is equipped with a 4k back-illuminated camera that gives a 0fdg82 field of ...
  • Installation of solar chromospheric telescope at the Indian Astronomical Observatory, Merak 
    Ravindra, B; Prabhu, K; Thulasidharen, K. C; Rajalingam, M; Sagayanathan, K; Kamath, P. U; Dorjey, N; Angchuk, D; Kemkar, P. M. M; Dorjai, T; Banyal, R. K (Indian Academy of Sciences, 2018-10)
    We report the observations of the solar chromosphere from a newly commissioned solar telescope at the incursion site near Pangong Tso lake in Merak (Leh/Ladakh). This new Hα telescope at the Merak site is identical to the ...
  • Long-lived atmospheric trace gases measurements in flask samples from three stations in India 
    Lin, X; Indira, N. K; Ramonet, M; Delmotte, M; Ciais, P; Bhatt, B. C; Reddy, M. V; Angchuk, D; Balakrishnan, S; Jorphail, S; Dorjai, T; Mahey, T. T; Patnaik, S; Begum, M; Brenninkmeijer, C; Durairaj, S; Kirubagaran, R; Schmidt, M; Swathi, P. S; Vinithkumar, N. V; Kwok, C. Y; Gaur, V. K (Published by Copernicus Publications on behalf of the European Geosciences Union, 2015-03)
    With the rapid growth in population and economic development, emissions of greenhouse gases (GHGs) from the Indian subcontinent have sharply increased during recent decades. However, evaluation of regional fluxes of GHGs ...
  • Long-term (2008–2018) aerosol properties and radiative effect at high-altitude sites over western trans-Himalayas 
    Dumka, U. C; Shantikumar, N. S; Kaskaoutis, D. G; Madhavan, B. L; Song, H. -J; Angchuk, D; Jorphail, S (Elsevier B. V, 2020-09-10)
    Analysis of the climatology of aerosol properties is performed over Hanle (4500 m) and Merak (4310 m), two remote-background sites in the western trans-Himalayas, based on eleven years (2008–2018) of sun/sky radiometer ...
  • Measurements of 220 GHz atmospheric transparency at IAO, Hanle, during 2000-2003 
    Ananthasubramanian, P. G; Yamamoto, S; Prabhu, T. P; Angchuk, D (Astronomical Society of India, 2004-06)
    A 220 GHz tipping radiometer was installed at the Indian Astronomical Observatory (IAO), Hanle (Latitude 32o46'46" N; Longitude 78o57'51" E; Altitude 4500 m, above msl) towards the end of December 1999. The system is in ...
  • Optical observations and dust modelling of comet 156P/Russell-LINEAR 
    Aravind, K; Halder, Prithish; Ganesh, Shashikiran; Sahu, D. K; Serra-Ricart, Miquel; Chambo, Jose J; Angchuk, D; Sivarani, T (Elsevier B.V., 2022-09-01)
    Comet 156P/Russell-LINEAR is a short period Jupiter family comet with an orbital period of 6.44 years. The results from spectroscopic, photometric, polarimetric observations and dust modelling studies are presented here. ...
  • Pointing of HAGAR telescope mirrors 
    Gothe, K. S; Prabhu, T. P; Vishwanath, P. R; Acharya, B. S; Srinivasan, R; Chitnis, V. R; Kamath, P. U; Srinivasulu, G; Saleem, F; Kemkar, P. M. M; Mahesh, P. K; Gabriel, F; Manoharan, J; Dorji, N; Dorjai, T; Angchuk, D; D'souza, A. I; Duhan, S. K; Nagesh, B. K; Rao, S. K; Sharma, S. K; Singh, B. B; Sudersanan, P. V; Thsering, M. T; Upadhya, S. S; Anupama, G. C; Britto, R. J; Cowsik, R; Saha, L; Shukla, A (Springer, 2013-04)
    An array of seven atmospheric Cherenkov telescopes was commissioned at a high altitude site in Hanle in the Ladakh region of the Himalayas. The array called HAGAR has been designed to observe celestial γ-rays of energy ...
  • Validation of estimated cloud fraction from MERRA-2 and AIRS data using ground based observation over IAO, Hanle 
    Shantikumar, S. N; Narendra, A; Bhatt, B. C; Prabhu, T. P; Anupama, G. C; Angchuk, D; Jorphail, S (Elsevier B.V, 2020-08-15)
    We report for validation of cloud fraction estimated from high-resolution (hourly) data from MERRA-2 and AIRS instrument aboard NASA’s Aqua satellite during its ascending and descending orbits with hourly ground-based ...

Search DSpace

Browse

My Account