To meet the needs of detection of space faint objects for a telescope with large aperture and short focal,a binding drawtube telescope scheme to detect space object is presented to overcome the shortcomings that focal length grows and field of view shrinks with the increasing of aperture size in traditional telescope for space detection.The software methods are used to stack collected images to restrain background random noises and to improve image Signal to Noise Ratio(SNR) and the detecting ability of the whole system. In order to validate the above assumption,four stages of 110 mm telescopes is binded to establish a experimental platform.Through practical observation and post process, the assumption is validated and the analysis result is presented. Experimental results indicate that the image SNR is increased by 1.58 times and the detecting ability is increased by 0.5 magnitude as compared with those of traditional telescope. It is validated that the detecting ability can be improved when relevant focus length is maintained from reducing.