DSpace Community: http://hdl.handle.net/2248/2007 2026-04-15T15:46:00Z 2026-04-15T15:46:00Z Technical report on the DST project astronomical and atmospheric observations in Ladhak region with long term view of setting up a national high altitude astronomical observatory for infra-red and optical studies (April 1984 to October 1989) Bhatnagar, A Gandhi, S.L http://hdl.handle.net/2248/2018 2020-10-27T13:11:23Z 1991-01-01T00:00:00Z Title: Technical report on the DST project astronomical and atmospheric observations in Ladhak region with long term view of setting up a national high altitude astronomical observatory for infra-red and optical studies (April 1984 to October 1989) Authors: Bhatnagar, A; Gandhi, S.L 1991-01-01T00:00:00Z Some further characteristics of observing conditions at Leh Singh, J Bhattacharyya, J. C Babu, G. S. D Appakutty, M Kuppuswamy, K Moorthy, V Devendran, P Velu, C Sivakumar, R http://hdl.handle.net/2248/2017 2020-12-07T10:15:24Z 1990-03-01T00:00:00Z Title: Some further characteristics of observing conditions at Leh Authors: Singh, J; Bhattacharyya, J. C; Babu, G. S. D; Appakutty, M; Kuppuswamy, K; Moorthy, V; Devendran, P; Velu, C; Sivakumar, R Abstract: The sky conditions were monitored and duration of photometric and spectroscopic hours determined on 198 nights during the period September 1984 to October 1986. Observations were continued from May till November 1987 and again from June to October 1988, when additionally the temperature and relative humidity values were systematically recorded. Several standard stars were monitored on several nights to determine the extinction coefficients in UBV bands; in addition, sky brightness was measured on eight nights in the months of September and October 1988. The values of sky brightness appear to be marginally higher than at La Palma. The average values of extinction coefficients, determined on 27 nights during 1988 show a general agreement with the earlier values. 1990-03-01T00:00:00Z Site survey for an infrared observatory Bhatnagar, A http://hdl.handle.net/2248/2016 2020-10-27T13:11:23Z 1974-01-01T00:00:00Z Title: Site survey for an infrared observatory Authors: Bhatnagar, A 1974-01-01T00:00:00Z Proposed high altitude observing facility Bhattacharyya, J. C http://hdl.handle.net/2248/2015 2020-10-27T13:10:41Z 1987-09-01T00:00:00Z Title: Proposed high altitude observing facility Authors: Bhattacharyya, J. C Description: Restricted Access 1987-09-01T00:00:00Z