Abstract
A prototype fisheye camera is a hemispheric radiometer that was developed as a proto-flight model for the hot spot observation in canopy reflectance. This camera consists of the CCD camera and the fisheye lens that can measure the surface radiation with high resolution in instantaneous field of view in a short time. The averaged image calculated from a large number of the images measured in a short time shows detailed characteristics of surface reflectance in hot spot. This paper describes the design, calibration, and first measurements, which were carried out in visible and near infrared region at the Tomakomai flux research site, of the prototype fisheye camera.
