A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)

Simona Lombardo; Greg Aldering; Akos Hoffmann; Marek Kowalski; Daniel Kuesters; Klaus Reif; Mickael Rigault

doi:10.1117/12.2055066

A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)

Instrumentation and Methods for Astrophysics 2014-12-04 v1

Authors: Simona Lombardo , Greg Aldering , Akos Hoffmann , Marek Kowalski , Daniel Kuesters , Klaus Reif , Mickael Rigault

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

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 degree. 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.

Keywords

flux calibration integral field spectrograph observational cosmology optical surveys calibration apparatus telescope system

Cite

@article{arxiv.1412.1109,
  title  = {A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)},
  author = {Simona Lombardo and Greg Aldering and Akos Hoffmann and Marek Kowalski and Daniel Kuesters and Klaus Reif and Mickael Rigault},
  journal= {arXiv preprint arXiv:1412.1109},
  year   = {2014}
}

Comments

11 pages, 6 figures

A flux calibration device for the SuperNova Integral Field Spectrograph (SNIFS)

Abstract

Keywords

Cite

Comments

Related papers