  The TIFR Near Infrared Imaging Camera-II (TIRCAM2) is being used at the
Devasthal Optical Telescope (DOT) operated by Aryabhatta Research Institute of
Observational Sciences (ARIES), Nainital, Uttarakhand, India. In addition to
the normal full frame observations, there has been a requirement for high speed
sub-array observations for applications such as lunar occultation and star
speckle observations. Fast sub-array modes have been implemented in TIRCAM2
with suitable changes in the camera software at the computer and controller DSP
code level. Successful observations have been carried out with the fast
sub-array mode of observation.
