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1# This file is part of obs_decam. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <http://www.gnu.org/licenses/>. 

21 

22from lsst.obs.base import FilterDefinition, FilterDefinitionCollection 

23 

24# lambdaMin and lambda max are chosen to be where the filter rises above 1% 

25# from http://www.ctio.noao.edu/noao/sites/default/files/DECam/DECam_filters_transmission.txt 

26DECAM_FILTER_DEFINITIONS = FilterDefinitionCollection( 

27 FilterDefinition(physical_filter="u DECam c0006 3500.0 1000.0", 

28 band="u", 

29 lambdaEff=350, lambdaMin=305, lambdaMax=403), 

30 FilterDefinition(physical_filter="g DECam SDSS c0001 4720.0 1520.0", 

31 band="g", 

32 lambdaEff=450, lambdaMin=394, lambdaMax=555), 

33 FilterDefinition(physical_filter="r DECam SDSS c0002 6415.0 1480.0", 

34 band="r", 

35 lambdaEff=600, lambdaMin=562, lambdaMax=725), 

36 FilterDefinition(physical_filter="i DECam SDSS c0003 7835.0 1470.0", 

37 band="i", 

38 lambdaEff=750, lambdaMin=699, lambdaMax=870,), 

39 FilterDefinition(physical_filter="z DECam SDSS c0004 9260.0 1520.0", 

40 band="z", 

41 lambdaEff=900, lambdaMin=837, lambdaMax=1016), 

42 FilterDefinition(physical_filter="Y DECam c0005 10095.0 1130.0", 

43 band="y", 

44 lambdaEff=1000, lambdaMin=941, lambdaMax=1080, 

45 alias={'Y'}), 

46 FilterDefinition(physical_filter="VR DECam c0007 6300.0 2600.0", 

47 band="VR", 

48 doc='A very broad-band filter, intended for "discovery", not "accurate photometry".' 

49 'For details, wee: http://www.ctio.noao.edu/noao/content/decam-vr-filter', 

50 lambdaEff=630, lambdaMin=490, lambdaMax=765), 

51 FilterDefinition(physical_filter="N964 DECam c0008 9645.0 94.0", 

52 band="N964", 

53 lambdaEff=964), 

54 FilterDefinition(physical_filter="solid plate 0.0 0.0", 

55 band="opaque", 

56 afw_name='SOLID', lambdaEff=0) 

57)