DESI's instrumentation, including a 3.2-degree prime-focus corrector, 5020 fiber positioners across ten petals, and ten three-channel spectrographs, has been successfully installed and meets all performance goals for a five-year survey of 40 million galaxies and quasars.
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Updated Planck CMB measurements give ns = 0.9649 ± 0.0042, r < 0.056, confirm flatness at 0.4 percent, and show no evidence for scale-dependent features or non-slow-roll dynamics in the inflaton potential.
citing papers explorer
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Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument
DESI's instrumentation, including a 3.2-degree prime-focus corrector, 5020 fiber positioners across ten petals, and ten three-channel spectrographs, has been successfully installed and meets all performance goals for a five-year survey of 40 million galaxies and quasars.
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Planck 2018 results. X. Constraints on inflation
Updated Planck CMB measurements give ns = 0.9649 ± 0.0042, r < 0.056, confirm flatness at 0.4 percent, and show no evidence for scale-dependent features or non-slow-roll dynamics in the inflaton potential.