Prototype designs for a wide-field high-resolution low-scatter image device

An optical design was done for a system having a wide field of view with diffraction limited resolution over a 5 deg by 10 deg FOV. The length of the system including a baffle was set such that the earth does not illuminate the primary mirror at an angle of 1.66 deg. The system was analyzed using APART and, with the results of the stray light analysis, improvements were made allowing a focal plane irradiance of less than 10 to the -11th W/sq cm from the earth as a thermal source. Thermal self emission was also analyzed using APART allowing the temperature of the telescope walls to be specified.