BVRI PHOTOMETRY OF THE DIPPER ASTERISM REGION IN M-67

We present Cousins BV RI magnitudes for stars in the M 67 'dipper aste rism' region, based on observations carried out at the prime focus of the 2.3 m Vainu Bappu Telescope of the Vainu Bappu Observatory, Kavalu r. The photometric system is calibrated using the photometric standard s in the field and linear transformation relations are derived. Photom etric results are reported for 37 stars in BV RI bands. Results are al so presented for an additional set of 35 stars in only two or three of these bands. The photometric accuracy is better than 3% for magnitude s B < 16, V, R < 17 and I < 14, and is slightly poorer for the results presented beyond this limit.