24 July 2014 A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)
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Observational cosmology employing optical surveys often require precise flux calibration. In this context we present SNIFS Calibration Apparatus (SCALA), a flux calibration system developed for the SuperNova Integral Field Spectrograph (SNIFS), operating at the University of Hawaii 2.2 m telescope. SCALA consists of a hexagonal array of 18 small parabolic mirrors distributed over the face of, and feeding parallel light to, the telescope entrance pupil. The mirrors are illuminated by integrating spheres and a wavelength-tunable (from UV to IR) light source, generating light beams with opening angles of 1°. These nearly parallel beams are flat and flux-calibrated at a subpercent level, enabling us to calibrate our “telescope + SNIFS system” at the required precision.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Simona Lombardo, Simona Lombardo, Greg Aldering, Greg Aldering, Akos Hoffmann, Akos Hoffmann, Marek Kowalski, Marek Kowalski, Daniel Kuesters, Daniel Kuesters, Klaus Reif, Klaus Reif, Michael Rigault, Michael Rigault, } "A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91474R (24 July 2014); doi: 10.1117/12.2055066; https://doi.org/10.1117/12.2055066


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