|Description:|| In the optical bands, time domain astronomy (TDA) is now in full swing. Optical TDA is the principal driver in astro-informatics now. In this informal talk, I will first summarize the PTF->ZTF story and then share my thoughts on the next phase of optical TDA. In my view radio TDA is about a decade behind and it would be useful to discuss, following my talk, the lessons learnt from optical TDA (so that the same mistakes are not made by radio astronomers).|
The image shows an areal view of the Palomar Observatory (California). The discovery engine is the 48-inch telescope (extreme left) and the photometric classification is done at the 60-inch telescope (extreme right). Spectral classification is undertaken at the 200-inch telescope (center). The very first synoptic survey undertaken with a wide field Schmidt telescope was F. Zwicky's 18-inch and is the small dome to the right of the 200-inch.