TY - GEN
T1 - Design, Assembly and Test of G-CLEF’s Exposure Meter I
T2 - Optical Instrument Science, Technology, and Applications III 2024
AU - Lupinari, Henrique
AU - Ben-Ami, Sagi
AU - Ribeiro, Rafael
AU - de Oliveira, Claudia Mendes
AU - Szentgyorgyi, Andrew
PY - 2024/6/17
Y1 - 2024/6/17
N2 - This project aims to formulate, design, build and test a versatile, high-efficiency, low-resolution spectrograph to function as the G-CLEF (GMT-Consortium Large Earth Finder) exposure meter. G-CLEF, the first-generation Giant Magellan Telescope’s (GMT) instrument, is a state-of-the-art, high-resolution echelle spectrograph for the GMT, expected to be completed for the telescope’s first light. The exposure meter plays a vital role in adjusting Barycentric Corrections (BC) of Doppler radial velocity (RV) by accounting for Earth’s chromatic atmospheric influences. Its significance becomes pronounced in Extreme Precision RV (EPRV) measurements, where the atmosphere’s wavelength dependency contributes to errors at the scale of tens of centimeters per second, the same level of precision required for detecting Earth-analog planets orbiting stars similar to the Sun, aligning with one of the primary scientific objectives of G-CLEF. This paper explores the scientific motivation in detail, describes the design trade-off analysis and the performance simulations aiming to achieve 1cm/s precision on EPRV measurements, and outlines the resulting principal parameters derived from these analyses.
AB - This project aims to formulate, design, build and test a versatile, high-efficiency, low-resolution spectrograph to function as the G-CLEF (GMT-Consortium Large Earth Finder) exposure meter. G-CLEF, the first-generation Giant Magellan Telescope’s (GMT) instrument, is a state-of-the-art, high-resolution echelle spectrograph for the GMT, expected to be completed for the telescope’s first light. The exposure meter plays a vital role in adjusting Barycentric Corrections (BC) of Doppler radial velocity (RV) by accounting for Earth’s chromatic atmospheric influences. Its significance becomes pronounced in Extreme Precision RV (EPRV) measurements, where the atmosphere’s wavelength dependency contributes to errors at the scale of tens of centimeters per second, the same level of precision required for detecting Earth-analog planets orbiting stars similar to the Sun, aligning with one of the primary scientific objectives of G-CLEF. This paper explores the scientific motivation in detail, describes the design trade-off analysis and the performance simulations aiming to achieve 1cm/s precision on EPRV measurements, and outlines the resulting principal parameters derived from these analyses.
UR - http://www.scopus.com/inward/record.url?scp=85200672627&partnerID=8YFLogxK
U2 - 10.1117/12.3028567
DO - 10.1117/12.3028567
M3 - Conference contribution
AN - SCOPUS:85200672627
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical Instrument Science, Technology, and Applications III
A2 - Munz, Holger
A2 - Sitarski, Breann N.
A2 - Youngworth, Richard N.
PB - SPIE
Y2 - 10 April 2024 through 11 April 2024
ER -