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Proceedings Paper

Compact total irradiance monitor flight demonstration
Author(s): David Harber; Zach Castleman; Ginger Drake; Samuel Van Dreser; Nat Farber; Karl Heuerman; Marc Miller; Joel Rutkowski; Alan Sims; Jacob Sprunck; Cameron Straatsma; Isaac Wanamaker; Wengang Zheng; Greg Kopp; Erik Richard; Peter Pilewskie; Nathan Tomlin; Michelle Stephens; Christopher Yung; Malcolm White; John Lehman
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Paper Abstract

The long-term balance between Earth’s absorption of solar energy and emission of radiation to space is a fundamental climate measurement. Total solar irradiance (TSI) has been measured from space, uninterrupted, for the past 40 years via a series of instruments. The Compact Total Irradiance Monitor (CTIM) is a CubeSat instrument that will demonstrate next-generation technology for monitoring total solar irradiance. It includes novel silicon-substrate room temperature vertically aligned carbon nanotube (VACNT) bolometers. The CTIM, an eight-channel 6U CubeSat instrument, is being built for a target launch date in late 2020. The basic design is similar to the SORCE, TCTE and TSIS Total Irradiance Monitors (TIM). Like TSIS TIM, it will measure the total irradiance of the Sun with an uncertainty of 0.0097% and a stability of <0.001%/year. The underlying technology, including the silicon substrate VACNT bolometers, has been demonstrated at the prototype-level. During 2019 we will build and test an engineering model of the detector subsystem. Following the testing of the engineering detector subsystem, we will build a flight detector unit and integrate it with a 6U CubeSat bus during late 2019 and 2020, in preparation for an on-orbit demonstration in 2021.

Paper Details

Date Published: 30 August 2019
PDF: 8 pages
Proc. SPIE 11131, CubeSats and SmallSats for Remote Sensing III, 111310D (30 August 2019);
Show Author Affiliations
David Harber, Lab. for Atmospheric and Space Physics (United States)
Zach Castleman, Lab. for Atmospheric and Space Physics (United States)
Ginger Drake, Lab. for Atmospheric and Space Physics (United States)
Samuel Van Dreser, Lab. for Atmospheric and Space Physics (United States)
Nat Farber, Lab. for Atmospheric and Space Physics (United States)
Karl Heuerman, Lab. for Atmospheric and Space Physics (United States)
Marc Miller, Lab. for Atmospheric and Space Physics (United States)
Joel Rutkowski, Lab. for Atmospheric and Space Physics (United States)
Alan Sims, Lab. for Atmospheric and Space Physics (United States)
Jacob Sprunck, Lab. for Atmospheric and Space Physics (United States)
Cameron Straatsma, Lab. for Atmospheric and Space Physics (United States)
Isaac Wanamaker, Lab. for Atmospheric and Space Physics (United States)
Wengang Zheng, Lab. for Atmospheric and Space Physics (United States)
Greg Kopp, Lab. for Atmospheric and Space Physics (United States)
Erik Richard, Lab. for Atmospheric and Space Physics (United States)
Peter Pilewskie, Lab. for Atmospheric and Space Physics (United States)
Dept. of Atmospheric and Oceanic Sciences (United States)
Nathan Tomlin, National Institute of Standards and Technology (United States)
Michelle Stephens, National Institute of Standards and Technology (United States)
Christopher Yung, National Institute of Standards and Technology (United States)
Malcolm White, National Institute of Standards and Technology (United States)
Univ. of Colorado Boulder (United States)
John Lehman, National Institute of Standards and Technology (United States)


Published in SPIE Proceedings Vol. 11131:
CubeSats and SmallSats for Remote Sensing III
Thomas S. Pagano; Charles D. Norton; Sachidananda R. Babu, Editor(s)

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