2017A&A...607A.113L


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.22CET12:24:33

2017A&A...607A.113L - Astronomy and Astrophysics, volume 607A, 113-113 (2017/11-1)

SCALA: In situ calibration for integral field spectrographs.

LOMBARDO S., KUSTERS D., KOWALSKI M., ALDERING G., ANTILOGUS P., BAILEY S., BALTAY C., BARBARY K., BAUGH D., BONGARD S., BOONE K., BUTON C., CHEN J., CHOTARD N., COPIN Y., DIXON S., FAGRELIUS P., FEINDT U., FOUCHEZ D., GANGLER E., HAYDEN B., HILLEBRANDT W., HOFFMANN A., KIM A.G., LEGET P.-F., McKAY L., NORDIN J., PAIN R., PECONTAL E., PEREIRA R., PERLMUTTER S., RABINOWITZ D., REIF K., RIGAULT M., RUBIN D., RUNGE K., SAUNDERS C., SMADJA G., SUZUKI N., TAUBENBERGER S., TAO C., THOMAS R.C. (The Nearby Supernova Factory)

Abstract (from CDS):

Aims. The scientific yield of current and future optical surveys is increasingly limited by systematic uncertainties in the flux calibration. This is the case for type Ia supernova (SN Ia) cosmology programs, where an improved calibration directly translates into improved cosmological constraints. Current methodology rests on models of stars. Here we aim to obtain flux calibration that is traceable to state-of-the-art detector-based calibration.
Methods. We present the SNIFS Calibration Apparatus (SCALA), a color (relative) flux calibration system developed for the SuperNova integral field spectrograph (SNIFS), operating at the University of Hawaii 2.2m (UH 88) telescope.
Results. By comparing the color trend of the illumination generated by SCALA during two commissioning runs, and to previous laboratory measurements, we show that we can determine the light emitted by SCALA with a long-term repeatability better than 1%. We describe the calibration procedure necessary to control for system aging. We present measurements of the SNIFS throughput as estimated by SCALA observations.
Conclusions. The SCALA calibration unit is now fully deployed at the UH 88 telescope, and with it color-calibration between 4000Å and 9000Å is stable at the percent level over a one-year baseline.

Abstract Copyright: © ESO, 2017

Journal keyword(s): telescopes - instrumentation: miscellaneous - standards - methods: data analysis - methods: data analysis

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GD 153 WD* 12 57 02.3224875106 +22 01 52.634392478 11.883 13.060 13.349 13.488 13.669 DA1.2 300 0
2 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0Va 2473 0
3 NAME Local Bubble ISM ~ ~           ~ 664 0

    Equat.    Gal    SGal    Ecl

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2019.11.22-12:24:33

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