SOLO：为SPHEREx设计的宽视场小行星光变监测系统
SOLO: wide-field asteroid light curve monitoring system for SPHEREx
AI总结：
SOLO是为SPHEREx设计的宽视场小行星光变监测系统，通过高采样率观测获取绝对校准的光变曲线，用于支持小行星目录的构建与科学应用。
摘要：
我们介绍了Solar system Objects Light curve Observatory（SOLO），一个宽视场、高采样率的光学巡天系统，旨在获取绝对校准的小行星光变曲线，并转换为Gaia G波段的光度系统，以支持SPHEREx小行星目录（SSOC）。SOLO于2025年7月安装在加利福尼亚州的Sierra远程天文台，并优化用于连续多夜监测小行星亮度变化。我们描述了系统配置、远程操作和数据还原管道，并通过调试数据评估其光学和光度性能。SOLO在11.6平方度的视场内实现了稳定的光度校准，并达到180秒曝光下G ~ 17.5的10-sigma极限光度。多夜获取的样本小行星光变曲线显示了相同旋转相位下的一致绝对光度，验证了估计的性能。最后，我们概述了SOLO与NASA SPHEREx任务的计划操作使用。SOLO的完整科学操作计划于2026年1月开始。利用这些数据，我们旨在每年获得约10^3条绝对校准的小行星光变曲线，用于支持SPHEREx SSOC的建设和科学利用。
英文摘要：
We present the Solar system Objects Light curve Observatory (SOLO), a wide-field, high-cadence optical survey system designed to obtain absolutely calibrated asteroid light curves, converted to the Gaia G-band photometric system, in support of the SPHEREx Solar System Object Catalog (SSOC). SOLO was installed at the Sierra Remote Observatories (SRO) in California, USA, in July 2025 and is optimized for continuous, multi-night monitoring of asteroid brightness variations. We describe the system configuration, remote operation, and data reduction pipeline, and evaluate its optical and photometric performance using commissioning data. SOLO achieves stable photometric calibration across the 11.6 deg^2 field of view and reaches a 10-sigma limiting magnitude of G ~ 17.5 for a 180 sec exposure. Sample asteroid light curves obtained over multiple nights demonstrate consistent absolute photometry at the same rotational phase, validating the estimated performance. Finally, we outline the planned operational use of SOLO in connection with NASA's SPHEREx mission. Full science operations of SOLO are scheduled to begin in January 2026. Using these data, we aim to obtain on the order of 10^3 absolutely calibrated asteroid light curves per year in the Gaia G-band, which will be used to support the construction and scientific utilization of the SPHEREx SSOC.
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