{"title":"Roadmap of GHOST@Gemini's Precision Radial Velocity Mode","authors":"Venu M. Kalari, Andreas Seifahrt, Ruben Diaz","doi":"arxiv-2409.05656","DOIUrl":null,"url":null,"abstract":"GHOST is a newly operational optical fiber-fed high-resolution spectrograph\nat the Gemini South 8.1m telescope. It currently offers the choice of two\nresolution modes captured by one (or two) input IFUs with a FOV of 1.2'' and a\nspectral resolving power of 56,000 and 76,000 for the unbinned CCDs. At the\nhigh-resolution mode, one can also instigate a simultaneous ThXe calibration\nlamp, which along with a simultaneous pseudo-slit profile constructed from\nreformatting the input IFU image will allow for precision radial velocity\nmeasurements. Here we talk about the proposed roadmap towards full queue\noperations, potential upgrades, and the error terms contributing to the final\non-sky RV precision, which is estimated to be in the 1-10 m s$^{-1}$ range.","PeriodicalId":501163,"journal":{"name":"arXiv - PHYS - Instrumentation and Methods for Astrophysics","volume":"293 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Instrumentation and Methods for Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.05656","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
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 1-10 m s$^{-1}$ range.
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