Report
Calibration Unit Design for High-Resolution Infrared Spectrograph for Exoplanet Characterization (HISPEC)
| العنوان: | Calibration Unit Design for High-Resolution Infrared Spectrograph for Exoplanet Characterization (HISPEC) |
|---|---|
| المؤلفون: | Sappey, Ben, Konopacky, Quinn, Jovanovic, Nemanja, Baker, Ashley, Maire, Jerome, Halverson, Samuel, Mawet, Dimitri, Ruffio, Jean-Baptiste, Bertz, Rob, Fitzgerald, Michael, Beichman, Charles, Ruane, Garreth, Kassis, Marc, Johnson, Chris, Magnone, Ken, Team, HISPEC |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics |
| الوصف: | The latest generation of high-resolution spectrograph instruments on 10m-class telescopes continue to pursue challenging science cases. Consequently, ever more precise calibration methods are necessary to enable trail-blazing science methodology. We present the High-resolution Infrared SPectrograph for Exoplanet Characterization (HISPEC) Calibration Unit (CAL), designed to facilitate challenging science cases such as Doppler imaging of exoplanet atmospheres, precision radial velocity, and high-contrast high-resolution spectroscopy of nearby exoplanets. CAL builds upon the heritage from the pathfinder instrument Keck Planet Imager and Characterizer (KPIC) and utilizes four near-infrared (NIR) light sources encoded with wavelength information that are coupled into single-mode fibers. They can be used synchronously during science observations or asynchronously during daytime calibrations. A hollow cathode lamp (HCL) and a series of gas absorption cells provide absolute calibration from 0.98 {\mu}m to 2.5 {\mu}m. A laser frequency comb (LFC) provides stable, time-independent wavelength information during observation and CAL implements a lower finesse astro-etalon as a backup for the LFC. Design lessons from instrumentation like HISPEC will serve to inform the requirements for similar instruments for the ELTs in the future. Comment: 16 pages, 14 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2311.10239 |
| رقم الانضمام: | edsarx.2311.10239 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |