Pupil Scrambling Integral Field Unit (PSI) for the Robert Stobie Spectrograph on SALT
Pupil Scrambling Integral Field Unit (PSI) for the Robert Stobie Spectrograph on SALT
复制标题
SALT 上罗伯特·斯托比摄谱仪的瞳孔扰乱积分场单元 (PSI)
DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
L. Bing
中科院分区:
文献类型:
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作者:
Michael P. Smith;M. Wolf;M. Bershady;Guangwei Fu;L. Bing
We propose to build an integral field unit (IFU) for the Robert Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT). This IFU (PSI) will employ the scrambling properties of fibers to address fundamental problems in achieving photon-limited sky subtraction due to variations in pupil illumination during observations. PSI will be fully encapsulated with a compact folding scheme in a standard long slit mask—far thinner than any previous fiber-based implementation. The IFU will cover 14 x 24 arcsec on sky, achieving spectral resolution R ≡ λ/δλ up to 6200 and photon-limited sky subtraction for studies of faint extended gas around galaxies beyond the reach of current 4m-class instruments. It will incorporate new-technology octagonal shaped fiber cores coupled by telecentric, pupil-imaging lenslets to fully optimize pupil scrambling and provide 100% integral sky coverage.
影响因子:
4.9
作者:
Bundy, Kevin;Bershady, Matthew A.;Zhang, Kai
通讯作者:
Zhang, Kai