Sujatha, S; Babu, G. S. D; Ananthamurthy, S
(Astronomical Society of India, 2006)
The first CCD photometric UBVRI observations of the open clusters NGC 1857 (Czernik 20, OCl 427) and Czernik 25 (OCl 493) are presented. The observations were obtained on 28 November 2003 with the 2m Himalayan Chandra ...