Dar, A. A; Parihar, P. S; Saleh, P; Malik, M. A
(Elsevier B.V, 2018-10)
This work presents the first photometric variability survey of the open cluster NGC 2509 carried out in February, 2017. Data of four nights was analysed by ensemble photometry technique, using 1k × 1k CCD and 1.3 m telescope ...