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- d7fbb6b1-1925-4a32-b399-c578435db47c definition "HiRAIS is an optical payload, designed and developed by SI (Satrec Initiative) of Daejeon, Korea in collaboration with Elecnor Deimos. The proven design has a significant heritage with DubaiSat-1 and -2 of EIAST (Emirates Institution for Advanced Science and Technology), United Arab Emirates. Dubaisat-2 is an almost exact Deimos-2 twin. The HiRAIS instrument consists of three elements: • EOS (Electro-Optical Subsystem) • SSRU (Solid-State Recorder Unit) • ITU (Image Transmission Unit). EOS is comprised of the following elements: telescope, ACM (Auxiliary Camera Module), and FPA (Focal Plane Assembly). EOS is a pushbroom type camera with 1 m GSD (Ground Sampling Distance) for a panchromatic imagery and 4 m GSD in four MS (Multispectral) bands (red, green, blue and NIR). The swath width of the generated image is 12 km. EOS features a Korsch telescope with 5 mirrors. The optical design includes the main mirror (M1) of 415 mm diameter, 3 mirrors to increase the focal length up to 5.7 m, and a flat mirror to reflect light rays onto FPA. Light-weighted Zerodur is used for the mirrors, while CFRP material was used to design the main optomechanical structure of HiRAIS. The temperature balance of the mirror surfaces, the distances between the mirrors and the FPA are all actively controlled by a feedback heating system, which includes thermostats and heaters. Also passive cooling with heat dissipative materials." @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c id "1655595" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_id 2e38423f-a5e6-411a-88d3-8fdc00aaf30a @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_id 4f81c61c-f100-4bc4-9664-d9b70d2f162f @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_id 6015ef7b-f3bd-49e1-9193-cc23db566b69 @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_id 944b7691-af37-4fb4-9393-c114e7997829 @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_label "Earth Remote Sensing Instruments" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_label "Imaging Spectrometers/Radiometers" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_label "Instruments" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_label "Passive Remote Sensing" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c path_label "Spectrometers/Radiometers" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c prefLabel "HiRAIS" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c reference "https://directory.eoportal.org/web/eoportal/satellite-missions/d/deimos-2" @default.
- d7fbb6b1-1925-4a32-b399-c578435db47c tag "Instruments" @default.