Allow ASIAIR to use the same camera (the same physical camera) to be used for both main camera and guiding, eliminating the need for a separate guide scope and guide camera, and allowing all functions to be done through one single main camera.
Foobaria Guide cameras usually need a short exposure time to correct the guiding in time, but the main camera needs a long exposure time to get more details. One physical camera can not complete the short exposure and long exposure simultaneously
