Abstract:
The Ultraviolet Imaging Telescope (UVIT) was launched as part of the multi-wavelength Indian AstroSat
mission on 28 September, 2015 into a low Earth orbit. A 6-month performance verification (PV) phase
ended in March 2016, and the instrument is now in the general observing phase. UVIT operates in three
channels: visible, near-ultraviolet (NUV) and far-ultraviolet (FUV), each with a choice of broad and
narrow band filters, and has NUV and FUV gratings for low-resolution spectroscopy. We have written a
software package (JUDE ) to convert the Level 1 data from UVIT into scientifically useful photon lists
and images. The routines are written in the GNU Data Language (GDL) and are compatible with the
IDL software package. We use these programs in our own scientific work, and will continue to update
the programs as we gain better understanding of the UVIT instrument and its performance. We have
released JUDE under an Apache License.
