Nanjing Institute of Astronomical Optics&Technology;
National Astronomical Observatories;
Nanjing 210042;
China;
CAS Key Laboratory of Astronomical Optics&Technology;
Nanjing Institute of Astronomical Optics&Technology;
Nanjing 210042;
China;
School of Automation;
Nanjing University of Information Science&Technology;
Nanjing 210044;
China;
techniques:telescopes; instrumentation:miscellaneous; methods:miscellaneous; techniques;