Design and Performance of the Carruthers Geocoronal Imager

arXiv:2606.31816 · astro-ph.IM, astro-ph.EP · Submitted 2026-06-30 · Read on arXiv

Martin Sirk, Alex M. Zhang, Thomas J. Immel, Jason B. McPhate, William W. Craig, Cathy Chou, Kodi Rider, Edward H. Wishnow, Anna L. Butterworth, Ellen R. Taylor, Lara Waldrop, John T. Clarke, Evan M. Widloski, Pascal Blain, Jérémy Brisbois, Jean-François Vandenrijt

astro-ph.IM, astro-ph.EP

Submitted: 2026-06-30

Comments: Preprint, in review by Space Sciences Reviews. To be published as part of the Carruthers mission special issue

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Calibration — 21× in this paper · explained in 7 episodes
• Accuracy — 15× in this paper · explained in 1 episode
• Aperture — 11× in this paper · explained in 1 episode
• alpha — 9× in this paper · explained in 1 episode
• Alignment — 6× in this paper · explained in 1 episode
• Narrow Field Imager — 3× in this paper
• Observing System Simulation Experiments — 2× in this paper
• Signal-to-noise ratio (SNR) — 2× in this paper · explained in 2 episodes
• Society of Photo-Optical Instrumentation Engineers — 2× in this paper
• Space Sciences Laboratory — 2× in this paper
• Wide Field Imager — 2× in this paper
• Carruthers Instrument Control Package — 1× in this paper
• Data Assimilation — 1× in this paper · explained in 2 episodes
• Fidelity — 1× in this paper · explained in 2 episodes
• Interstellar Mapping and Acceleration Probe — 1× in this paper
• Micro Channel Plate — 1× in this paper
• Monte Carlo framework — 1× in this paper · explained in 2 episodes
• Systematic Bias — 1× in this paper · explained in 3 episodes
• Total Integrated Scatter — 1× in this paper

Sources

• Forecasting the solar cycle using variational data assimilation: validation on cycles 22 to 25
• Theory for planetary exospheres: II. Radiation pressure effect on exospheric density profiles
• Carruthers Data Processing Pipeline: Photon Background Removal
• On-orbit Calibration of the Carruthers GCI: Radiometric Sensitivity
• On-orbit Calibration of the Carruthers GCI: Instrument Effect Correction

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