Wireless sensor network for characterizing the effectiveness of a fan ventilated telescope enclosure

Kumar, T. S.; Yadava, Shobhit; Singh, Arunesh Kumar

doi:10.1109/upcon.2018.8596840

Cited by 3 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to understand the effectiveness of dome ventilation system and to efficiently utilize it to reduce the effect of dome seeing, it is necessary to monitor the temperature gradient in the telescope and its enclosure. For this purpose, a network of wireless sensors are being developed for deploying them near the heat load and in the wind path at different locations so that the temperature variation of telescope structure, mirror, dome, pier, technical room, underground ducts, basement area and outside environment can be monitored 30 . The dome building is also equipped with a four passenger lift which is used to transport instrument components from the ground to the telescope floor.…”

Section: Telescope Enclosure and Dome Control Systemmentioning

confidence: 99%

The 3.6 meter Devasthal Optical Telescope: From inception to realisation

Sagar,

Kumar,

Omar

2019

Preprint

View full text Add to dashboard Cite

India's largest size 3.6 meter Devasthal optical telescope (DOT) was commissioned in the year 2016, though the idea of building it germinated way back in the year 1976. This article provides research accounts as well as glimpses of its nearly four decades of journey. After a decade of site surveys, location of Devasthal in central Himalyan region of Kumaon was identified. Thereafter, a detailed site characterization was conducted and project approvals were obtained. The telescope is designed to be a technologically advanced optical astronomy instrument. It has been demonstrated to resolve a binary star having angular separation of 0. 4. After the technical activation of the telescope on March 30, 2016, it has been in regular use for testing various back-end instruments as well as for optical and near-infrared observations of celestial objects. Back-end instruments used for these observations are 4K×4K CCD imager, Faint object imager cum spectrograph and TIFR nearinfrared camera-II. A few published science results based on the observations taken with the telescope are also presented. Furthermore, the routine observations find that for a good fraction of observing time the telescope provides sky images of sub-arc-second resolution at optical and near-infrared wavelengths. This indicates that the extreme care taken in the design and construction of the telescope dome building has been rewarding since the as-built thermal mass contributes minimally so as not to degrade the natural atmospheric seeing measured at Devasthal about two decades ago during 1997-1999 using differential image motion monitor. The overall on-site performance of the telescope is found to be excellent and at par with the performance of other similar telescopes located over the globe.

show abstract

Section: Telescope Enclosure and Dome Control Systemmentioning

confidence: 99%