High-Resolution Reconstruction of Images from an Interferometry Telescope

In using an interferometry telescope, information of structures at high frequencies corresponding to the longest baseline can be obtained;however, the U-V plane can only be partially covered.In order to cover the U-V plane as completely as possible, we change the configuration of apertures on the mask of the full aperture of the telescope or rotate the mask in its own plane.The integrated image with the full U-V coverages can be reconstructed by combining interferograms with partial U-V coverages.In this paper, high-resolution image reconstruction of interferometry telescope is described in detail with emphasis on the combination methods of interferograms.We finally show a set of actual observations with the interferometry telescope and the reconstruction procedure as described.The observations successfully lead to high-resolution images with full U-V coverage through the procedure.