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First Lunar Occultation Results with the TIRCAM2 Near-Infrared Imager at the Devasthal 3.6-m Telescope

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dc.contributor.author Sharma, Saurabh, et.al
dc.contributor.author Kumar, Brajesh
dc.contributor.author Rawat, Jeewan
dc.contributor.author Bora, Darshan S.
dc.contributor.author Belwal, Kuldeep
dc.contributor.author Dhami, Prakash
dc.contributor.author Bisht, Mohit
dc.date.accessioned 2024-02-22T06:29:05Z
dc.date.available 2024-02-22T06:29:05Z
dc.date.issued 2022-12
dc.identifier.uri 10.1142/S2251171722400025
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/1458
dc.description.abstract TIRCAM2 is the facility near-infrared Imager at the Devasthal 3.6-m telescope in northern India, equipped with an Aladdin III InSb array detector. We have pioneered the use of TIRCAM2 for very fast photometry, with the aim of recording Lunar Occultations (LO). This mode is now operational and publicly o®ered. In this paper, we describe the relevant instrumental details, provide references to the LO method and the underlying data analysis procedures, and list the LO events recorded so far. Among the results, we highlight a few which have led to the measurement of one small-separation binary star and of two stellar angular diameters. We conclude with a brief outlook on further possible instrumental developments and an estimate of the scienti¯c return. In particular, we ¯nd that the LO technique can detect sources down to K 9 mag with SNR ¼ 1 on the Devasthal Optical Telescope telescope. Angular diameters larger than 1 milli arcsecond (mas) could be measured with SNR above 10, or K 6 mag. These numbers are only an indi cation and will depend strongly on observing conditions such as lunar phase and rate of lunar limb motion. Based on statistics alone, there are several thousands LO events observable in principle with the given telescope and instrument every year. en_US
dc.language.iso en en_US
dc.publisher Journal of Astronomical Instrumentation en_US
dc.relation.ispartofseries 2014;jai11(4)-2240002
dc.subject Instrumentation en_US
dc.subject detectors en_US
dc.subject methods en_US
dc.subject observational en_US
dc.subject stars: individual en_US
dc.title First Lunar Occultation Results with the TIRCAM2 Near-Infrared Imager at the Devasthal 3.6-m Telescope en_US
dc.type Article en_US


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