Speaker
Edgar Marrufo Villalpando
(The University of Chicago)
Description
Ultra-low readout noise detectors will enable increased sensitivity to high-density and high-redshift spectroscopic surveys to place tighter constraints on dark energy and dark matter (e.g., a Stage-5 Spectroscopic Survey). We present the first on-sky results from an ultra-low-readout-noise Skipper charge-coupled device (CCD) focal plane prototype for the SOAR Integral Field Spectrograph (SIFS). We present charge-quantized, photon-counting observations from a quasar at redshift z ~ 3.5 (HB89 1159+123) and show the detector sensitivity increase for faint spectral features. We demonstrate signal-to-noise performance improvements for SIFS observations in the low-background, readout-noise-dominated regime.
Primary authors
Alex Drlica-Wagner
(Fermilab)
Edgar Marrufo Villalpando
(The University of Chicago)
Brandon Roach
(Kavli Institute for Cosmological Physics)