MR. SABYASACHI CHATTOPADHYAY

DOTIFS stands for Devasthal Optical Telescope Integral Field Spectrograp which is a new multi-object Integral Field Spectrograph (IFS) being designed and fabricated by IUCAA for the Cassegrain side port of the 3.6m Devasthal Optical Telescope (DOT). Its main scientific objectives are the physics and kinematics of the ionized gas, star formation and H II regions in nearby galaxies. It is a novel instrument in terms of multi-IFU, built in deployment system and high throughput. It consists of one magnifier, 16 integral field units (IFUs), and 8 spectrographs. Each IFU is comprised of a microlens array and 144 optical fibers, and has 7.4” × 8.7” field of view with 144 spaxel elements with a sampling of 0.8” hexagonal aperture. In this talk we will present a novel methodology to create Integral Field Units that has various advantage over all the present techniques. We will also discuss about the progress of other aspects of the instrument.