Digital telescope system consists of digital camera and telescope has been presented in this research. The telescope and digital camera can be also operated separately. The objective lens and eyepiece were designed individually considering paraxial theory and the physical feasibility to reduce the system length for 40%. Furthermore, the appropriate geometry of prism size and the refractive index were also been calculated. Then, the objective lens and eyepieces are combined to be a telescope system. The design of the digital camera system is according to the matching of the exit pupil of the telescope and the entrance pupil, angle, position and size of the digital camera. Then the digital camera and telescope are combined to be a digital telescope. Moreover, the accumulation aberration of the system has been also been considered. Finally, the tolerance was analyzed to ensure the productivity.