Gcx is an astronomical image processing and data reduction tool,
with an easy to use graphical user interface. It provides a
complete set of data reduction functions for CCD photometry,
with frame WCS fitting, automatic star identification, aperture
photometry of target and standard stars, single-frame ensemble
photometry solution finding, multi-frame color coefficient
fitting, extinction coefficient fitting, and all-sky photometry;
as well as general-purpose astronomical image processing functions
(bias, dark, flat, frame alignment and stacking); It can function
as a FITS viewer.
The program can control CCD cameras and telescopes, and implement
automatic observation scripting. Cameras are controlled through a
hardware-specific server, to which gcx connects through a TCP socket.
It generates FITS files with comprehensive header information.