Multi epoch spectroscopy still remains our only probe to understand the innermost (< 1AU) regions of protoplanetary discs. We have a long-running program for monitoring FUors and EXors to understand the accretion and outflow phenomenon in YSOs. With this motivation, I shall talk about our new project to build a novel spectrograph, which will be the fastest spectrograph for ultra broad band spectroscopy survey in the world. This instrument, dubbed TA-MOONS will be a next generation instrument on the 3.6 m DOT, India, that will have the unique capability to observe up to 8 targets anywhere in the 12 arc min diameter field of view in the ultra broad band wavelength range of 370 nm to 2.5 micron simultaneously.

I look forward to a discussion on both the science and instrumentation aspect.