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18 July 2024 Status of the dual-beam spectrograph upgrade project for transient follow-up with SALT
Janus D. Brink, Deon R. Lategan
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Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130969N (2024) https://doi.org/10.1117/12.3018312
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan
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Abstract
We present the status of an upgrade to the Robert-Stobie Spectrograph (RSS) on the Southern African Large Telescope (SALT). The instrument upgrade is primarily aimed at efficient identification spectroscopy of transients. The updated design extends the existing RSS by adding a new simultaneous red channel for wide visible wavelength coverage (360 nm to 900 nm). The design delivers R ~800 in the blue channel using the existing RSS optics and R ~2000 via the new red channel. We present the current status of the project and the advances in the opto-mechanical design.
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Janus D. Brink and Deon R. Lategan "Status of the dual-beam spectrograph upgrade project for transient follow-up with SALT", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130969N (18 July 2024); https://doi.org/10.1117/12.3018312
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KEYWORDS
Design
Mirrors
Optical gratings
Collimators
Reticles
Telescopes
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