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AIROPA IV: Validating point spread function reconstruction on various science cases
Lu, Jessica R.; Fitzgerald, Michael P.; Do, Tuan +7 more
We present an analysis of six independent on-sky datasets taken with the Keck-II/NIRC2 instrument. Using the off-axis point spread function (PSF) reconstruction software AIROPA, we extract stellar astrometry, photometry, and other fitting metrics to characterize the performance of this package. We test the effectiveness of AIROPA to reconstruct th…
Emu: a case study for TDI-like imaging for infrared observation from space
Nordlander, Thomas; Casagrande, Luca; Ireland, Michael +14 more
A wide-field zenith-looking telescope operating in a mode similar to time-delay-integration (TDI) or drift scan imaging can perform an infrared sky survey without active pointing control, but it requires a high-speed, low-noise infrared detector. Operating from a hosted payload platform on the International Space Station (ISS), the Emu space teles…
Astrometric errors introduced by interpixel capacitive coupling in hybridized arrays
Baum, Stefi; Ninkov, Zoran; Donlon, Kevan
Interpixel capacitance (IPC) between adjacent pixels in hybridized arrays gives rise to an electrostatic cross talk. This cross talk causes MTF degradation and blurring of images or spectra collected using these devices. As pixel size is driven down from the 18-µm pixel pitch of the H2RG read out circuits to the 10- or 15-µm H4RGs IPC …
Principal component analysis of up-the-ramp sampled infrared array data
Rauscher, Bernard J.; Arendt, Richard G.; Fixsen, Dale J. +3 more
We describe the results of principal component analysis (PCA) of up-the-ramp sampled infrared (IR) array data from the Hubble Space Telescope wide field camera 3 (WFC3 IR), James Webb Space Telescope NIRSpec, and prototype Wide Field Infrared Survey Telescope's wide field instrument detectors. These systems use, respectively, Teledyne H1R, H2RG, a…