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- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 definition "The Optical Transient Detector (OTD) is a highly compact combination of optical and electronic elements. It was developed as an in-house project at NASA's Marshall Space Flight Center in Huntsville, Alabama. The name, Optical Transient Detector, refers to its capability to detect the momentary changes in an optical scene which indicate the occurrence of lightning. The OTD instrument is a major advance over previous technology in that it can gather lightning data under daytime conditions as well as at night. In addition, it provides much higher detection efficiency and spatial resolution than has been attained by earlier lightning sensors. At the heart of the system is a solid-state optical sensor similar in some ways to a TV camera. However, in overall design and many specific features, OTD had to be uniquely designed for the job of observing and measuring lightning from space. Like a TV camera, the OTD has a lens system, a detector array (serving a function somewhat analogous to the retina in the human eye), and circuitry to convert the electronic output of the system's detector array into useful data. The sensor system (camera) is approximately 8 inches in diameter and 15 inches high, while the supporting electronics package is about the size of a standard typewriter. Together, the two modules weigh approximately 18 kilograms (40 pounds). The total weight of the satellite placed on orbit is 75 kilograms (165 pounds). Additional information available at 'http://thunder.msfc.nasa.gov/otd/' [Summary provided by NASA]" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 id "1654525" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_id 4f81c61c-f100-4bc4-9664-d9b70d2f162f @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_id 6015ef7b-f3bd-49e1-9193-cc23db566b69 @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_id 72227178-bb4c-4ff5-98a3-f976aa3f3714 @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_id b2140059-b3ca-415c-b0a7-3e142783ffe8 @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_label "Earth Remote Sensing Instruments" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_label "Instruments" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_label "Passive Remote Sensing" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 path_label "Photon/Optical Detectors" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 prefLabel "OTD" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 reference "" @default.
- 3a8a9d74-05f4-4e0c-9e4e-f5bc2acccfe7 tag "Instruments" @default.