Home > Agencies & Organisations, Astronomy, Cosmology, General Astronomy, NASA (National Aeronautics & Space Administration) > Second Flight Instrument Delivered For James Webb Space Telescope

Second Flight Instrument Delivered For James Webb Space Telescope


The second of four main instruments to fly aboard NASA’s James Webb Space Telescope (Webb) has been delivered to NASA. The Fine Guidance Sensor (FGS) will enable the telescope to accurately and precisely point at the correct, intended objects for it to observe. The FGS is packaged together as a single unit with the Near-Infrared Imager and Slitless Spectrograph (NIRISS) science instrument.

FGS/NIRISS arrived at NASA’s Goddard Space Flight Center in Greenbelt, Md., July 30. It has been undergoing inspection before post-delivery testing and then integration into Webb’s science instrument payload known as the Integrated Science Instrument Module (ISIM).

The Canadian Space Agency (CSA) developed the Webb’s Fine Guidance Sensor and the Near-Infrared Imager and Slitless Spectrograph.

The FGS consists of two identical cameras that are critical to Webb’s ability to “see.” Their images will allow the telescope to determine its position, locate its celestial targets, and remain pointed to collect high-quality data. The FGS will guide the telescope with incredible precision, with an accuracy of one millionth of a degree of angle.

Full Story: http://www.nasa.gov/topics/technology/features/2nd-webb-inst.html

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