====== Instruments and Magnitude Systems ======

Sorted by version, the most recent first. This actually follows data releases associated to papers, so we explicitly refer to papers in the following sections. 

<color orange>Please use the complete installation scripts that you can find [[usage|here]] if you are not familiar with the package organization and want to reproduce published results.</color>

===== SDSS-II/SNLS3 Joint Analysis (JLA) =====
As in Betoule et al. (2014). Retrieved from the [[http://supernovae.in2p3.fr/sdss_snls_jla/ReadMe.html|SDSS-II/SNLS3 Joint Light-curve Analysis data release page]].

  * {{::salt2-4_data.tgz|}} (md5:af829c7f177c6037adcbe0a89360464a), complete salt2 data set
  * {{::jla-instruments-2-4.tar.gz}} only the intruments
  * {{::jla-magsys-2-4.tar.gz}} only the magnitude systems

===== SNLS 3 year Analysis (SNLS3) ===== 

As in Guy et al. (2010).

==== Instruments ====

For the SNLS3 release, the format for instruments has not changed much. The new thing is that for Megacam, there are for each band, several filter transmission files, for various radial distances to the center of the focal plane. The description of Landolt filters has also been modified (but they are clearly not well defined).


^ File ^ Instrument / Telescope ^ Reference ^
| {{:snls3-megacam-model.tar.gz}} | Megacam / CFHT | as used in SNLS3 analysis, transmission varies with position in the focal plane, see Regnault et al. (2009) for details |
| {{:snls3-landolt-model.tar.gz}} | Approximate model for Landolt system (which is not well defined) | As used in SNLS3 analysis, it corresponds to shifted Bessell filters. See Regnault et al. (2009) for a comprehensive discussion about this magnitude system. The exact shifts are from Conley et al. (2010). |
| {{::snls3-keplercam.tar.gz}} | Effective filters for Keplercam instrument | As used in SNLS3 analysis, downloaded from CfA3 . See Hicken et al. (2009) and SNLS3 usage in Conley et al. (2010).|
| {{::snls3-4shooter2.tar.gz}} | Effective filters for 4Shooter instrument | As used in SNLS3 analysis. See Hicken et al. (2009) and SNLS3 usage in Conley et al. (2010).|
| {{::snls3-sdss-model-doi2010.tar.gz}} | Effective filters for SDSS | As used in SNLS3 analysis. From table 4 of Doi et al. (2010) (airmass of 1.3). See SNLS3 usage in Conley et al. (2010).|
| {{::snls3-csp-swope.tar.gz}} | Effective filters for the Swope telescope (CSP collaboration) | As used in SNLS3 analysis. From CSP Filters web page, see Contreras et al. (2009). See SNLS3 usage in Conley et al. (2010).|
| {{::snls3-hst-acswf.tar.gz}} | Effective filters for ACSWF on HST | As used in SNLS3 analysis. From synphot (Space Telescope Science Institute). See SNLS3 usage in Conley et al. (2010).|
| {{::snls3-hst-nicmos2.tar.gz}} | Effective filters for NICMOS2 on HST | As used in SNLS3 analysis. From synphot (Space Telescope Science Institute). See SNLS3 usage in Conley et al. (2010).|

=== Same filters as above, but resampled with a 5 A wavelength step === 
(to avoid differences due to the usage of various interpolation techniques)

  * {{::snls3-Landolt-model-5a.tar.gz}}
  * {{::snls3-keplercam-5a.tar.gz}}
  * {{::snls3-4shooter2-5a.tar.gz}}
  * {{::snls3-sdss-model-doi2010-5a.tar.gz}}
  * {{::snls3-csp-Swope-5a.tar.gz}}
  * {{::snls3-hst-acswf-5a.tar.gz}}
  * {{::snls3-hst-nicmos2-5a.tar.gz}}

==== Magnitude systems ====
Magnitude systems are presented seperatly as the combination of data from different surveys requires the usage of different magnitude systems. Go [[usage|here]] for more documentation about how they are handled in the code.

^File ^Description and references
| {{::snls3-magsys-1.tar.gz}} |SNLS 3 year magnitude system, based on BD+17d4708. Defined in Regnault et al. (2009). File also contains magnitudes in Landolt, Keplercam, 4Shooter, Swope system.
| {{::snls3-sdss-magsys.tar.gz}} |SDSS magnitude system as used in Conley et al. (2010). Composed of AB offsets determined using SDSS mags of 3 solar analogs (see Holtzman et al. (2008) table 1), CALSPEC spectra for those three stars, and synthetic AB magnitudes using Doi et al. (2010) filters (table 4).
| {{::snls3-vega-magsys.tar.gz}} |Vega based magnitude system for Riess et al. (2007) HST data (ACSWF and NICMOS2 instruments).

===== SNLS 1st year Analysis (SNLS1) =====

As used in Astier et al. (2006)

==== Base data archive ====
  * {{::salt_base_data-1-0.tar.gz|}} : Base archive with new packaging.
Contains default fitmodel.card and data that describe a Vega magnitude system.

==== Instruments ====
^File ^Instrument / Telescope ^Reference^
| {{::landolt-1.tar.gz}} | Landolt system | as used in Astier 2006|
| {{::megacam-1-1.tar.gz}} | Megacam / CFHT | trimed version (neglect wav. regions with low eff.)|
| {{::acswf-1.tgz}} | ACS / HST | from A. Conley, based on synphot data|
| {{::nicmos2-1.tgz}} | NICMOS / HST | from A. Conley, based on synphot data|
| {{::mosaic2-1.tgz}} | Mosaic II / CTIO Blanco | from A. Conley, based on ESSENCE Data Release 1|
| {{::megacam-1.tar.gz}} | Megacam / CFHT | as used in Astier 2006|

Have a look at the [[usage|usage page]] for a description of how to use those files.