Abstract Details
| Name: Rahna P T Affiliation: Christ University, Bengaluru Conference ID: ASI2018_441 Title : Characterizing the in-flight performance of UVIT instrument and UV properties of a galaxy Authors and Co-Authors : P. T. Rahna(1), J. Murthy(2), M. Safonova(3), F. Sutaria(2), S. B. Gudennavar(1) and S. G. Bubbly(1) (1) Department of Physics and Electronics, Christ University, Bengaluru 560029, India (2) Indian Institute of Astrophysics, Bengaluru 560034, India (3) M. P. Birla Institute of Fundamental Research, Bengaluru 560001, India Abstract Type : Poster Abstract Category : Instrumentation and Techniques Abstract : Ultra Violet Imaging Telescope (UVIT) is one of the instruments on India's first multi wavelength mission, AstroSat, which provides a unique opportunity to observe the UV sky simultaneously in three channels. We have performed an independent characterization of the FUV and NUV detectors of UVIT payload on-board and found that the performance is close to that expected from the ground-based calibration. We have reduced and analysed the data using JUDE software and found that the photometric sensitivity is same as GALEX in the NUV broadband filter and about 35% that of GALEX in the FUV broadband filter. The PSF of the instrument is of the order of 1.2 to 1.6 arcsecs. We derived the distortion correction but recommend that it be applied post processing as part of the astrometric solution. Since the higher angular resolution, higher sensitivity and multiple filters of UVIT are well suited for the study of the detailed features of galaxies, the study of ultraviolet properties of a galaxy using UVIT data is in progress. The details of these studies will be presented during the meeting. |