We present the current status of the TAO AIUC High Resolution Y Band Spectrograph-- TARdYS. This fiber injected, near infrared (0.843 - 1.117 um) spectrograph is designed for exoplanets characterization using the radial velocities technique, and will be installed at the TAO observatory
The novel optical design represents a cost-effective solution with a 1K detector in a semi-cryogenic setup allowing appropriate stability and precision required for high-resolution RV measurements.
A prototype has been assembled at AIUC and early results present an excellent image quality. The performance of a quasi-Littrow and a White Pupil setup have been compared, preferring the latter.
Currently, the project is acquiring the scientific detector. We are aiming for the widely used H1RG detector, and alternatively considering an InGaAs detector. In this talk we present the background thermal emission effect and first ideas to develop a mechanical and optical front-end including an image acquisition system and AO correction.