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The similar age of the stars in star cluster system makes them an interesting objects for the study of stellar evolution. However, for such studies, it is essential to reduce the field star contamination. Proper motion of the stars in the region of star clusters provides a unique possibility of getting membership information of the stars. The mean absolute proper motion of the globular cluster NGC 4590 is derived as −2.95± 0.54 mas yr−1 and 2.03± 0.52 mas yr−1 along right ascension (RA) and declination (DEC) respectively using ≈11,000 stars having an error less than 7 mas yr−1. We propose a similar study of globular clusters with the CCD imager mounted on the 3.6m Devasthal Optical telescope (DOT).

Proper Motion study of globular cluster NGC 4590