J/A+A/549/A8 Atmospheric extinction properties above Mauna Kea (Buton+, 2013)
Atmospheric extinction properties above Mauna Kea from the Nearby Supernova
Factory spectro-photometric data set.
Buton C., Copin Y., Aldering G., Antilogus P., Aragon C., Bailey S.,
Baltay C., Bongard S., Canto A., Cellier-Holzem F., Childress M.,
Chotard N., Fakhouri H.K., Gangler E., Guy J., Hsiao E.Y., Kerschhaggl M.,
Kowalski M., Loken S., Nugent P., Paech K., Pain R., Pecontal E.,
Pereira R., Perlmutter S., Rabinowitz D., M.Rigault, Runge K., Scalzo R.,
Smadja G., Tao C., Thomas R.C., Weaver B.A., Wu C.,
The Nearby Supernova Factory
<Astron. Astrophys. 549, A8 (2013)>
=2013A&A...549A...8B 2013A&A...549A...8B
ADC_Keywords: Extinction ; Spectrophotometry
Keywords: atmospheric effects - instrumentation: spectrographs -
methods: observational - techniques: imaging spectroscopy
Abstract:
We present a new atmospheric extinction curve for Mauna Kea spanning
3200-9700Å. It is the most comprehensive to date, being based on
some 4285 standard star spectra obtained on 478 nights spread over a
period of 7 years obtained by the Nearby SuperNova Factory using the
SuperNova Integral Field Spectrograph. This mean curve and its
dispersion can be used as an aid in calibrating spectroscopic or
imaging data from Mauna Kea, and in estimating the calibration
uncertainty associated with the use of a mean extinction curve. Our
method for decomposing the extinction curve into physical components,
and the ability to determine the chromatic portion of the extinction
even on cloudy nights, is described and verified over the wide range
of conditions sampled by our large dataset. We demonstrate good
agreement with atmospheric science data obtain at nearby Mauna Loa
Observatory, and with previously published measurements of the
extinction above Mauna Kea.
Description:
SNfactory median atmospheric extinction [mag/airmass] and its
decomposition into physical components (Ozone, Aerosol optical depth
and Aerosol Angstroem exponent) from 3200Å to 10000Å (2Å
bins).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
snfext.dat 69 3551 Atmospheric extinction at Mauna Kea
snfext.fits 2880 28 FITS file for atmospheric extinction
--------------------------------------------------------------------------------
See also:
J/A+AS/109/293 : Heterochromatic extinction. I. (Grebel+, 1995)
J/A+AS/109/313 : Heterochromatic Atmospheric Extinction (Roberts+, 1995)
J/other/JAD/18.3 : Infrared extinction spectra of aerosols (Sterken+, 2012)
Byte-by-byte Description of file: snfext.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 13 E12.8 0.1nm lambda Wavelength (Å)
16- 27 E12.8 mag Ext Median atmospheric extinction,
in mag/airmass unit
30- 41 E12.8 mag kR Rayleigh scattering, in mag/airmass unit
43- 55 E13.8 mag kO3 Ozone scattering, in mag/airmass unit
58- 69 E12.8 mag ka Aerosols scattering, in mag/airmass unit
--------------------------------------------------------------------------------
Acknowledgements:
C. Buton, cbuton(at)me.com
(End) C. Buton [Universitaet Bonn], Patricia Vannier [CDS] 05-Oct-2012