BV photographic photometries of 789 stars in the region of the open clusters NGC1750 and NGC1758 are derived from a set of 8 photometric plates .
According to the astronomical data including proper motions , positions and membership probabilities of individual stars , several astrophysical parameters for these two clusters are determined , such as HR diagrams , ages , distances , luminosity functions , masses and kinematics , etc .
It is found that the distances are ( 525 \pm 48 pc ) and ( 794 \pm 73 pc ) with ages of 1.5 \times 10 ^ { 8 } yr and 6.3 \times 10 ^ { 8 } yr for NGC1750 and NGC1758 respectively .
Both clusters show no significant mass segregation effects because of their relatively young ages .
The analysis of the proper motions imply that their velocity distributions are isotropy .

Keywords open cluster : individual – NGC1750 , NGC1758 – photometry – parameters