Sanwal, B. B.; Rautela, B. S.; Singh, M.; Srivastava, J. B.
(1993)
Periodic comet Swift-Tuttle (1992t) period 135 years was observed with 104 cm reflector of Uttar Pradesh State Observatory, Naini Tal, using OMA (Optical Multichannel Analyser) reticon array detector in the visible region ...