220 GHz tipping radiometer for monitoring sky opacity at Hanle

Ananthasubramanian, P. G; Yamamoto, S; Prabhu, T. P

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dc.contributor.author	Ananthasubramanian, P. G
dc.contributor.author	Yamamoto, S
dc.contributor.author	Prabhu, T. P
dc.date.accessioned	2009-09-08T14:14:16Z
dc.date.available	2009-09-08T14:14:16Z
dc.date.issued	2002
dc.identifier.citation	Vernin, J., Benkhaldoun, Z and Munoz-Tunon, C.,eds. Astronomical site evaluations in the visible and radio range., Proceedings of a workshop held at Cadi Ayyad University, Astronomical Society of the Pacific Conference Series, Vol. 266, Moracco, Marrakech, 13 - 17 Nov, 2000., pp. 164 - 170	en
dc.identifier.isbn	1-58381-106-0
dc.identifier.uri	http://hdl.handle.net/2248/4797
dc.description.abstract	A 220 GHz tipping radiometer is in operation at the Indian Astronomical Observatory, Mt Saraswati, Digpa-ratsa Ri, Hanle (Latitude 32degrees 46' 46".3 N, Longitude 78degrees 57' 51".1 E, Altitude 4500 in above msl) for continuous monitoring of sky opacity at this frequency. We describe here the working principle, data acquisition method and data reduction scheme of the radiometer. We also present some preliminary results on the 220 GHz zenith optical depth at Mt. Saraswati which shows that optical depths less than 0.10 can be achieved for nearly 75% of the time during the six colder months (October to March).	en
dc.language.iso	en	en
dc.publisher	Astronomical Society of the Pacific	en
dc.relation.ispartofseries	Astronomical Society of the Pacific Conference Series;Vol. 266
dc.relation.uri	http://adsabs.harvard.edu//abs/2002ASPC..266..164A	en
dc.rights	© Astronomical Society of the Pacific	en
dc.subject	Atmospheric Opacity	en
dc.title	220 GHz tipping radiometer for monitoring sky opacity at Hanle	en
dc.type	Article	en