| Abstract : | The North Celestial Cap (NCC), covering region of δ ≥ 80◦, was observed in the U band as part of the TAUVEX UV telescope program (a bi-national Indo-Israeli collaboration), designed for UV survey of the sky. The aim of the optical U-band observations was to identify and catalog objects which could potentially show UV variability. While the TAUVEX program was eventually curtailed, the optical data taken by the IIA Himalayan Chandra Telescope (HCT) over 3 months (October 2009 – December 2009) is still useful, from the viewpoint of tracking stellar variability in hot stars (and cooler stellar/extra galactic objects which are U- and NUV-bright). The calibrated magnitudes are matched against the North Celestial Cap Survey (NCCS) catalogue (Gorbikov, E. and Noah, B., 2013) and the sources themselves cross-correlated with other, multiwaveband, observations of
this field, notably from GALEX, but also with other, archival, UV datasets. We thus present an updated spectral energy distribution (SED) of all astronomical objects in this field, with emphasis on the UV band. |
