LASP Associate Director Tom Woods knows about space gunk.
As the principal investigator for the Extreme Ultraviolet Variability Experiment (EVE) aboard NASA’s Solar Dynamics Observatory, he’s all too familiar with the ways that exposure to the harsh space environment can lead to a spacecraft instrument’s degradation.
A multimillion dollar CU-Boulder/LASP instrument package expected to help scientists better understand potentially damaging space weather is now slated to launch aboard a National Oceanic and Atmospheric Administration satellite on Saturday, Nov. 19.
Designed and built at LASP, the instrument suite known as the Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) is the first of four identical packages that will fly on four NOAA weather satellites in the coming decade. EXIS will measure energy output from the sun that can affect satellite operations, telecommunications, GPS navigation and power grids on Earth as part of NOAA’s next-generation Geostationary Operational Environmental Satellites-R Series (GOES-R).
Satellites provide data daily on our own planet, our sun and the universe around us. The instruments on these spacecraft are constantly bombarded with solar particles and intense light, not to mention the normal wear and tear from operating in space.
If it were a car that’s a few years old, you would take it to the mechanic for a tune-up to make sure it continues running smoothly. However, with a spacecraft it’s not that easy. Thus, scientists may turn to calibration flights to make sure the instruments are kept up to snuff and providing validated data.
One such flight will be the Extreme UltraViolet (EUV) Variability Experiment, or EVE, from the University of Colorado, Boulder, to observe the sun from a NASA Black Brant IX sounding rocket at 3:02 p.m. EDT May 25 at the White Sands Missile Range in New Mexico.
Watching the sun is dangerous work for a telescope. Solar instruments in space naturally degrade over time, bombarded by a constant stream of solar particles that can cause a film of material to adhere to the optics. Decades of research and engineering skill have improved protecting such optics, but one crucial solution is to regularly recalibrate the instruments to accommodate such changes.
In mid-May, the seventh calibration mission for an instrument on NASA’s Solar Dynamics Observatory, or SDO, will launch into space onboard a sounding rocket for a 15-minute flight. The instrument to be calibrated is called EVE, short for the EUV Variability Experiment, where EUV stands for extreme ultraviolet. EVE’s job is to observe the total energy output of the sun in EUV light waves. The calibration mission is scheduled to launch on May 21, 2015, on a Terrier-Black Brant suborbital sounding rocket around 3 pm EDT from White Sands Missile Range, New Mexico.
At any given moment, our sun emits a range of light waves far more expansive than what our eyes alone can see: from visible light to extreme ultraviolet to soft and hard X-rays. Different wavelengths can have different effects at Earth and, what’s more, when observed and analyzed correctly, those wavelengths can provide scientists with information about events on the sun. In 2012 and 2013, a detector was launched on a sounding rocket for a 15 minute trip to look at a range of sunlight previously not well-observed: soft X-rays.
The Sun is the dominant source of energy for Earth’s atmosphere. Scientists are interested in determining how the Sun’s output affects Earth’s climate and the ways specific events can disrupt space weather applications, space-based technologies, and radio communications. New observations of solar extreme ultraviolet (EUV) irradiance from the LASP-designed and built EUV Variability Experiment (EVE) on NASA’s Solar Dynamics Observatory (SDO) are adding another piece to this complicated puzzle that may help scientists more accurately predict space weather events.
On March 23, 2011, LASP launched a sounding rocket intended to calibrate the Extreme ultraviolet Variability Experiment (EVE) on the NASA Solar Dynamics Observatory (SDO). The rocket carries an almost exact replica instrument as the satellite version SDO EVE instrument, which will help to determine any long-term degradation of the EVE optical system and will enable EVE to obtain the most accurate measurements possible of solar irradiance.
A LASP-built instrument launched aboard a sounding rocket on May 3 with the goal of providing calibration data for a twin instrument already in flight aboard NASA’s Solar Dynamics Observatory (SDO). The “rocket-based” Extreme ultraviolet Variability Experiment, or EVE, was launched from the Air Force’s White Sands Missile Range near Las Cruces, New Mex.
Event Date: Wednesday, February 10, 2010 Join Us at the Laboratory for Atmospheric and Space Physics (LASP) for the launch of the Solar Dynamics Observatory (SDO) which includes the LASP-built instrument Extreme ultraviolet Variability Experiment (EVE). SDO is NASA’s first satellite in the Living With a Star program. 7:30 am — Doors open 7:45 am… Read more »