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Active galactic nuclei (AGN) are high luminosity sources powered by accretionof matter onto SMBHs located at the centres of galaxies. The SMBH is surroundedby a broad emission line region (BLR) and a dusty torus. It is difficult tostudy the extent of the dusty torus as the central region of AGN is notresolvable using any conventional imaging techniques available today. Though,current IR interferometric techniques could in principle resolve the torus innearby AGN, it is very expensive and limited to few bright and nearby AGN. Amore feasible alternative to the interferometric technique to find the extentof the dusty torus in AGN is the technique of reverberation mapping (RM). REMAP(REverberation Mapping of AGN Program) is a long term photometric monitoringprogram being carried out using the 2 m HCT operated by the IIA, Bangalore,aimed at measuring the torus size in many AGN using the technique of RM. Itinvolves accumulation of suitably long and well sampled light curves in theoptical and near-infrared bands to measure the time delays between the lightcurves in different wavebands. These delays are used to determine the radius ofthe inner edge of the dust torus. REMAP was initiated in the year 2016 andsince then about one hour of observing time once every five days (weatherpermitting) has been allocated at the HCT. Our initial sample carefullyselected for this program consists of a total of 8 sources observable using theHCT. REMAP has resulted in the determination of the extent of the inner edge ofthe dusty torus in one AGN namely H0507+164. Data accumulation for the secondsource is completed and observations on the third source are going on. We willoutline the motivation of this observational program, the observationalstrategy that is followed, the analysis procedures adopted for this work andthe results obtained from this program till now.

REMAP: Determination of the inner edge of the dust torus in AGN by measuring time delays