The Solar Guide Telescope (SGT), an important solar attitude sensor of the SST (Space Solar Telescope, a space solar observing instrument being developed in Chi
Using a pulsar timing system developed at Urumqi Astronomical Observatory's 25-m telescope, we observed scintillation dynamic spectra for seven pulsars at t
A performance study of several CCD cameras of the Chinese Joint Laboratory of Optical Astronomy(CJLOA)is presented.The main results are:1)We propose a modified