In-Flight Calibration and Performance of the OSIRIS-REx Touch And Go Camera System (TAGCAMS)

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In-Flight Calibration and Performance of the OSIRIS-REx Touch And Go Camera System (TAGCAMS) B.J. Bos1 · D.S. Nelson2 · J.Y. Pelgrift2 · A.J. Liounis1 · D. Doelling3 · C.D. Norman4 · R.D. Olds4 · C.W. May4 · R. Witherspoon4 · E. Church4 · D. Huish4 · C.D. Adam2 · E. Sahr2 · J. Kidd5 · K. Drozd5 · W.M. Owen6 · M.C. Moreau1 · L.T. Seals1 · J. Butt1 · D. LeDuc1 · K. Alkiek1 · L.R. Chevres-Fernandez1 · K.E. Gordon1 · K. Khlopenkov7 · C. Haney7 · R. Bhatt7 · J. Hikes1 · A. Wolfram1 · M. Caplinger8 · M.A. Ravine8 · K. Getzandanner1 · A. Bartels1 · D.S. Lauretta5 Received: 25 October 2019 / Accepted: 27 April 2020 © This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply 2020

Abstract The Touch And Go Camera System (TAGCAMS) is a three-camera-head instrument onboard NASA’s OSIRIS-REx asteroid sample return mission spacecraft. The purpose of TAGCAMS is to facilitate navigation to the target asteroid, (101955) Bennu; confirm acquisition of the asteroid sample; document asteroid sample stowage; and provide supplementary imaging for OSIRIS-REx science investigations. During the almost two-year OSIRIS-REx outbound cruise phase we pursued nine TAGCAMS imaging campaigns to check, calibrate and characterize the camera system’s performance before asteroid arrival and proximity operations began in late 2018. The TAGCAMS in-flight calibration dataset provides the relevant information to enable the three cameras to complete their primary observation goals during asteroid operations. The key performance parameters that we investigated in flight included: linearity, responsivity (both point source and extended body), dark current, hot pixels, pointing, image geometry transformation, imOSIRIS-REx Edited by Dante Lauretta and Christopher T. Russell

B B.J. Bos

[email protected]

1

NASA Goddard Space Flight Center, Greenbelt, MD, USA

2

KinetX Inc., Simi Valley, CA, USA

3

NASA Langley Research Center, Hampton, VA, USA

4

Lockheed Martin Space, Littleton, CO, USA

5

Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA

6

Jet Propulsion Laboratory, Pasadena, CA, USA

7

Science Systems and Applications, Inc., Hampton, VA, USA

8

Malin Space Science Systems, San Diego, CA, USA

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age quality and stray light. Analyses of the in-flight performance either confirmed the continued applicability of the TAGCAMS ground test results or substantially improved upon the ground test knowledge. In addition, the TAGCAMS calibration observations identified the source of a spacecraft outgassing feature that guided successful remediation efforts prior to asteroid arrival. Keywords Bennu · Cameras · Spacecraft · Remote sensing · Instruments · Imaging systems · Planetary missions · Asteroid · Sample return

1 Introduction and Overview The National Aeronautics and Space Administration (NASA) launched the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) asteroid sample return mission o

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