The RHEA single-mode spectrograph

摘要

RHEA is a compact high-resolution single-mode spectrograph that can easily be produced in larger quantities as budgets allow. The instrument will be housed in a temperature-stabilized vacuum chamber which is surrounded by several layers of thermal shielding. The optical design employs cost-effective commercially available components, a cooled CMOS detector, and a double-fiber input which permits simultaneous wavelength calibration.