Integrated Science Instrument Module
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Integrated Science Instrument Module (ISIM) is a component of the James Webb Space Telescope, a large international infrared space telescope planned for launch in 2018.[1] ISIM is the heart of the JWST, and holds the main science payload which includes four science instruments and the fine guidance sensor.[1] ISIM is the spacecraft chassis and instruments that take the light from the main mirror and and convert that into the science data that is then sent back to Earth.[1] The other two major sections of the JWST are the Optical Telescope Element (OTE) (mirror and their structure) and the Spacecraft Element (SE), which includes the Spacecraft Bus and Sunshield.[1]
ISIM contains these instruments:[1]
- Near-Infrared Camera, or NIRCam
- Near-Infrared Spectrograph, or NIRSpec .
- Mid-Infrared Instrument, or MIRI
- Fine Guidance Sensor/ Near InfraRed Imager and Slitless Spectrograph , or FGS/NIRISS
Relevant systems and subsytems the ISIM:[2]
- Optical metering structure
- ISIM Electronics Compartment (IEC)
- harness radiator
- ISIM Command and Data Handling System (ICDH)
- ISIM Remote Services Unit (IRSU)
- electrical harness system
- thermal control system
- flight software system
- on-board script system
References
External links
