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Nimbus was a research program conducted by NASA in the 1960s and 1970s to study the Earth's atmosphere and weather via satellites in polar orbit. This artifact, an engineering protype of SIRS-A (Satellite Infrared Spectrometer), is representative of a key research instrument, called a sounder, used to measure temperature and water vapor at different levels in the atmosphere.
A SIRS-A sounder flew on Nimbus 3, launched in 1969, and was the first space-based instrument to acquire a temperature profile of the atmosphere. Its first reading occured over Kingston, Jamaica, which, as a test of the sounder's performance, was compared with readings acquired by a balloon radiosonde.
The National Oceanic and Atmospheric Administration transferred this artifact to the Museum in 1987.
Display Status
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
Object Details
Country of Origin
United States of America
Type
SPACECRAFT-Uncrewed-Instruments & Payloads
Manufacturer
Santa Barbara Research Center Dimensions
Overall: 88.9 x 40.64cm (2ft 11in. x 1ft 4in.) Materials
Mylar (Polyester), Nylon, Plastic, Stainless fabric, Magnesium, Cadmium Plating, Adhesive, Gold Plating Inventory Number
A19870194000
Credit Line
Transferred from NOAA
Data Source
National Air and Space Museum
Restrictions & Rights
Usage conditions apply
For more information, visit the Smithsonians Terms of Use.