Showing posts with label MIRI. Show all posts
Showing posts with label MIRI. Show all posts

Saturday, November 9, 2013

NASA James Webb Space Telescope: Arrival of ESA EADS 'Super-eye' - Video



A new NASA video gives viewers an up close view of the arrival of the James Webb Space Telescope's "Super-eye."

The James Webb telescope's Near-Infrared Spectrometer, (NIRSpec), instrument arrived by truck at NASA's Goddard Space Flight Center in Greenbelt, Md., on Sept. 20, 2013, and NASA videographers documented it for everyone.

After its trans-Atlantic flight to Thurgood Marshall BWI airport, Baltimore, Md., on a specialized Russian transport plane from Germany, it was moved into the world's largest clean room for further testing.

The instrument, built at the EADS ASTRIUM facility in Munich, Germany, is often referred to as the Webb telescope's "Super-eye."

NIRSpec is Webb's instrument that will use infrared light to analyze the physical properties and chemical composition of distant galaxies, stars and planets.

The video shows NIRSpec after its meticulously coordinated delivery as it was unloaded off a truck, moved into a clean room and situated by engineers for inspection.

The video above runs 1 minute, 51 seconds and is available in high resolution. It was created at the Scientific Visualization Studio at NASA Goddard.

It is the last of the Webb observatory's science instruments to arrive at NASA. At Goddard, each of the Webb's four science instruments will be added to the heart of telescope, known as the Integrated Science Instrument Module (ISIM).

The Fine Guidance System/Near-InfraRed Imager and Slitless Spectrograph (FGS/NIRISS) and the Mid-Infrared Instrument (MIRI) have already been installed on ISIM and are currently undergoing the first cryogenic tests.

"NIRSpec's delivery from Europe to Goddard is an amazing international accomplishment," said Maurice te Plate, European Space Agency's Webb system integration and test manager and ESA MIRI instrument manager at NASA Goddard.

NIRSpec is a unique instrument, made out of a very stable and stiff material called silicon carbide. It holds a special NASA-developed device called the Micro Shutter Array.

"The Micro Shutter Array, is a unique electro-mechanical mask that has never been flown in space before," te Plate said.

"This part will allow the NIRSpec spectrograph system to measure light, sometimes very faint, of up to 100 scientific targets at the same time, while rejecting unwanted objects from its field of view."

Thursday, May 16, 2013

NASA completes first part of Webb Telescope's MIRI Instrument

Much like the inside of an operating room, in the clean room at NASA's Goddard Space Flight Center in Greenbelt, MD, engineers worked meticulously to implant part of the eyes of the James Webb Space Telescope.

They scrubbed up and suited up to perform one of the most delicate performances of their lives. 

That part of the eyes, the MIRI, or Mid-Infrared Instrument, will glimpse the formation of galaxies and see deeper into the universe than ever before. 

Credit: NASA/Chris Gunn

Much like the inside of an operating room, in the clean room at NASA's Goddard Space Flight Center in Greenbelt, Md., engineers worked meticulously to implant part of the eyes of the James Webb Space Telescope.



They scrubbed up and suited up to perform one of the most delicate performances of their lives. That part of the eyes, the MIRI, or Mid-Infrared Instrument, will glimpse the formation of galaxies and see deeper into the universe than ever before.

It's high-stakes surgery that has taken years of preparation. This science instrument must fit precisely into the ISIM, or Integrated Science Instrument Module (the black frame on the right to which they install the MIRI), so that it is installed exactly where it needs to be within the width of a thin human hair.



This intricate process involves a tremendous amount of work from the engineering team to make sure the instrument is settled and installed just right.

The MIRI itself weighs 181 pounds (82 kg) and is being held by a crane (on the left of the photo), which is being maneuvered by the engineer at the base of the ladder.

Each engineer has a role in the process that must be done as delicately as possible so as not to disturb anything, said Jason Hylan, the engineer responsible for the operation from start to finish.

Disturbing MIRI would cost the mission the critical science that will help shape our knowledge of the universe, and push the boundaries of scientific discoveries.

For that reason, precise engineering is key and that can put some of the engineers in awkward positions, literally.

"Because we are trying to put so much stuff into such a small space, we always run into problems related to access," Hylan said. "This is somewhat akin to working on a car under the hood – some things are easy to get to because they are on the outside of where you are working."

"Other parts are buried and are very difficult to get to. Much of what we have to integrate is on the 'inside' and so access is very difficult. "

"During the operation, we need to access multiple things at the same time and one person may only be able to access one area, so we need multiple people all around doing the same thing at the same time. It is a very coordinated operation."

Hylan said that, like watching the new World Trade Center being built in New York right now, the process is tedious, but the end result is something significant that will leave its mark on a generation.

The James Webb Space Telescope is the successor to NASA's Hubble Space Telescope.

It will be the most powerful space telescope ever built and observe the most distant objects in the universe, provide images of the first galaxies formed and see unexplored planets around distant stars.

The Webb telescope is a joint project of NASA, the European Space Agency and the Canadian Space Agency.

Thursday, June 14, 2012

NASA James Webb Space Telescope (JWST) : First Flight Instrument Delivered


The first of four instruments to fly aboard NASA's James Webb Space Telescope (Webb) has been delivered to NASA. The Mid-Infrared Instrument (MIRI) will allow scientists to study cold and distant objects in greater detail than ever before.

MIRI arrived at NASA's Goddard Space Flight Center in Greenbelt, Md., May 29. It has been undergoing inspection before being integrated into Webb’s science instrument payload known as the Integrated Science Instrument Module (ISIM).

Assembled at and shipped from the Science and Technology Facilities Council's Rutherford Appleton Laboratory in the United Kingdom, MIRI was developed by a consortium of 10 European institutions and NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., after having been handed over to the European Space Agency.



MIRI will observe light with wavelengths in the mid-infrared range of 5 microns to 28 microns, which is a longer wavelength than human eyes can detect. It is the only instrument of the four with this particular ability to observe the physical processes occurring in the cosmos.

"MIRI will enable Webb to distinguish the oldest galaxies from more evolved objects that have undergone several cycles of star birth and death," said Matt Greenhouse, ISIM project scientist at Goddard. "MIRI also will provide a unique window into the birth places of stars which are typically enshrouded by dust that shorter wavelength light cannot penetrate."

MIRI's sensitive detectors will allow it to observe light, cool stars in very distant galaxies; unveil newly forming stars within our Milky Way; find signatures of the formation of planets around stars other than our own; and take imagery and spectroscopy of planets, comets and the outermost bits of debris in our solar system. MIRI's images will enable scientists to study an object’s shape and structure.

The most powerful space telescope ever built, Webb is the successor to NASA's Hubble Space Telescope. Webb’s four instruments will reveal how the universe evolved from the Big Bang to the formation of our solar system. Webb is a joint project of NASA, the European Space Agency and the Canadian Space Agency.