About James Webb Space Telescope (JWST)
The JWST (James Webb Space Telescope), formerly named NGST (Next Generation Space Telescope), is conceived as a successor to the Hubble Space Telescope and is planned for 2021 .
It should operate for at least five years and possibly even for as long as ten years.Several innovative technologies have been developed for Webb.
These include a folding, segmented primary mirror, adjusted to shape after launch; ultra-lightweight beryllium optics; detectors able to record extremely weak signals, microshutters that enable programmable object selection for the spectrograph; and a cryocooler for cooling the mid-IR detectors to 7 K.
The long-lead items, such as the beryllium mirror segments and science instruments, are under construction.
All mission enabling technologies were demonstrated by January 2007. In July 2008 NASA confirmed the Webb project to proceed into its implementation phase, and the project conducted a major mission review in March 2010.
Compared to currently existing or planned observatories, the JWST will have the unique advantage of combining superb image quality, a relatively large field of view and low background light with a highly stable operating environment.
All of these are very important characteristics for the infrared observations the JWST will need to carry out to see the first stars and galaxies.
The Observatory is the space-based portion of the James Webb Space Telescope system and is comprised of three elements:
1.the Integrated Science Instrument Module (ISIM)
2.the Optical Telescope Element (OTE) (includes the mirrors and backplane)
3.the Spacecraft Element (Spacecraft Bus and Sunshield)
The Integrated Science Instrument Module, or ISIM, will house the four main instruments. Webb's instruments will be designed to work primarily in the infrared range of the electromagnetic spectrum, with some capability in the visible range.
It will be sensitive to light from 0.6 to 27 micrometers in wavelength. JWST will feature following instruments.
1.Mid-Infrared Instrument (MIRI) - provided by the European Consortium with the European Space Agency (ESA), and by the NASA Jet Propulsion Laboratory (JPL)
2.Near-Infrared Camera (NIRCam) - provided by the University of Arizona
3.Near-Infrared Spectrograph (NIRSpec) - provided by ESA, with components provided by NASA/GSFC.
4.Fine Guidance Sensor Tunable Filter Imager (FGS-TFI) - provided by the Canadian Space Agency. The FGS contains a dedicated Guider and a Tunable Filter Imager.
- Predecessor: Ariane 5
- This craft has been featured
- Created On: Android
- Game Version: 0.9.802.0
- Price: $32,828k
- Number of Parts: 1834
- Dimensions: 55 m x 13 m x 6 m
- Total Delta V: 21.6km/s
- Total Thrust: 12.1MN
- Engines: 23
- Wet Mass: 2.72E+5kg
- Dry Mass: -466,765kg