Fine Guidance Sensor and Near Infrared Imager and Slitless Spectrograph
Fine Guidance Sensor and Near Infrared Imager and Slitless Spectrograph (FGS-NIRISS) is an instrument for the planned James Webb Space Telescope that combines a Fine Guidance Sensor and a science instrument, a near-infrared imager and a spectrograph.[1] The FGS/NIRISS is being built by the Canadian Space Agency as part of the international project to build a large infrared space telescope with the United States and various European states.[1] FGS-NIRISS observers light from the wavelengths of 0.8 to 5.0 microns.[1] The instrument has four different observing modes.[2] Physically the FGS and NIRISS are combined, but optically they are separate with the FGS being used by the telescope to point it, whereas NIRISS is an independent science instrument.[2][3] The spectroscopic mode is capable of doing exoplanet spectroscopy.[4] The detector for NIRISS is a 2048 x 2048 pixel HgCdTe array, where aach pixel is 18 microns on a side according to the STSCi.[5] The field of view is 2.2' x 2.2' which gives a plate scale of about 0.065 arcsec/pixel.[5]
The FGS helps the telescope aim and stay pointed at whatever it is commanded to look at.[6] FGS helps provide data to the JWST Attitude Control System (ACS) and do this it is a big sky coverage and sensitivity, to give a high probability it can find a guide star.[7]
Related institutions and the science team for the instrument includes:[6]
- COM DEV
- National Research Council Canada
- Saint Mary's University
- Space Telescope Science Institute (STScI)
- Swiss Federal Institute of Technology Zurich (ETH Zurich)
- Université de Montréal
- York University
- University of Rochester
- Cornell University
- University of Toronto.
- Université de Montréal
- Mont-Mégantic Observatory
- Institute for Research on Exoplanets (iRex)
- Centre de recherche en astrophysique du Québec (CRAQ)
References
- 1 2 3 "The James Webb Space Telescope". jwst.nasa.gov. Retrieved 2016-11-27.
- 1 2
- ↑ Webb's Instruments
- ↑ "ESA Science & Technology: The JWST instrument suite". sci.esa.int. Retrieved 2016-11-27.
- 1 2 "NIRISS: Near-InfraRed Imager and Slitless Spectrograph". stsci.edu. Retrieved 2016-11-27.
- 1 2 "Canada's Contribution to the James Webb Space Telescope - Canadian Space Agency". asc-csa.gc.ca. Retrieved 2016-11-27.
- ↑ "FGS - Fine Guidance Sensor". stsci.edu. Retrieved 2016-11-27.