Poster + Paper
18 July 2024 Roadmap of GHOST@Gemini's precision radial velocity mode
Venu Kalari, Andreas Seifahrt, Ruben Diaz
Author Affiliations +
Conference Poster
Abstract
GHOST is a newly operational optical fiber-fed high-resolution spectrograph at the Gemini South 8.1m telescope. It currently offers the choice of two resolution modes captured by one (or two) input IFUs with a FOV of 1.2” and a spectral resolving power of 56,000 and 76,000 for the unbinned CCDs. At the high-resolution mode, one can also instigate a simultaneous ThXe calibration lamp, which along with a simultaneous pseudo-slit profile constructed from reformatting the input IFU image will allow for precision radial velocity measurements. Here we talk about the proposed roadmap towards full queue operations, potential upgrades, and the error terms contributing to the final on-sky RV precision, which is estimated to be in the 1-10ms−1 range.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Venu Kalari, Andreas Seifahrt, and Ruben Diaz "Roadmap of GHOST@Gemini's precision radial velocity mode", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309628 (18 July 2024); https://doi.org/10.1117/12.3021130
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KEYWORDS
Spectrographs

Telescopes

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