Coverage for python/lsst/obs/lsst/filters.py : 100%

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1# This file is part of obs_lsst.
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/>.
22__all__ = ()
24from lsst.obs.base import FilterDefinition, FilterDefinitionCollection
25from .translators.lsst import FILTER_DELIMITER
28LSSTCAM_FILTER_DEFINITIONS = FilterDefinitionCollection(
29 FilterDefinition(physical_filter="NONE",
30 lambdaEff=0.0,
31 alias={"no_filter", "OPEN"}),
32 FilterDefinition(physical_filter="275CutOn",
33 lambdaEff=0.0),
34 FilterDefinition(physical_filter="550CutOn",
35 lambdaEff=0.0),
36 # The LSST Filters from L. Jones 04/07/10
37 FilterDefinition(physical_filter="u",
38 abstract_filter="u",
39 lambdaEff=364.59, lambdaMin=324.0, lambdaMax=395.0),
40 FilterDefinition(physical_filter="g",
41 abstract_filter="g",
42 lambdaEff=476.31, lambdaMin=405.0, lambdaMax=552.0),
43 FilterDefinition(physical_filter="r",
44 abstract_filter="r",
45 lambdaEff=619.42, lambdaMin=552.0, lambdaMax=691.0),
46 FilterDefinition(physical_filter="i",
47 abstract_filter="i",
48 lambdaEff=752.06, lambdaMin=818.0, lambdaMax=921.0),
49 FilterDefinition(physical_filter="z",
50 abstract_filter="z",
51 lambdaEff=866.85, lambdaMin=922.0, lambdaMax=997.0),
52 # official y filter
53 FilterDefinition(physical_filter="y",
54 abstract_filter="y",
55 lambdaEff=971.68, lambdaMin=975.0, lambdaMax=1075.0, alias=['y4']),
56)
58# LATISS filters include a grating in the name so we need to construct
59# filters for each combination of filter+grating.
60_latiss_filters = (
61 FilterDefinition(physical_filter="NONE",
62 lambdaEff=0.0,
63 alias={"no_filter", "OPEN"}),
64 FilterDefinition(physical_filter="blank_bk7_wg05",
65 lambdaEff=0.0),
66 FilterDefinition(physical_filter="KPNO_1111_436nm",
67 abstract_filter="g",
68 lambdaEff=436.0, lambdaMin=386.0, lambdaMax=486.0),
69 FilterDefinition(physical_filter="KPNO_373A_677nm",
70 abstract_filter="r",
71 lambdaEff=677.0, lambdaMin=624.0, lambdaMax=730.0),
72 FilterDefinition(physical_filter="KPNO_406_828nm",
73 abstract_filter="z",
74 lambdaEff=828.0, lambdaMin=738.5, lambdaMax=917.5),
75 FilterDefinition(physical_filter="diffuser",
76 lambdaEff=0.0),
77 FilterDefinition(physical_filter="EMPTY",
78 lambdaEff=0.0),
79 FilterDefinition(physical_filter="????",
80 lambdaEff=0.0),
81 FilterDefinition(physical_filter="BG40",
82 # abstract_filter="g", # afw only allows one g filter
83 lambdaEff=472.0, lambdaMin=334.5, lambdaMax=609.5),
84 FilterDefinition(physical_filter="quadnotch1",
85 lambdaEff=0.0),
86 FilterDefinition(physical_filter="RG610",
87 lambdaEff=0.0),
88)
90# Form a new set of filter definitions from all the explicit filters
91_latiss_gratings = ("ronchi90lpmm", "ronchi170lpmm", "EMPTY", "????", "NONE")
93# Include the filters without the grating in case someone wants
94# to retrieve a filter by an actual filter name
95_latiss_filter_and_grating = [f for f in _latiss_filters]
97for filter in _latiss_filters:
98 for grating in _latiss_gratings:
99 # FilterDefinition is a frozen dataclass
100 new_name = FILTER_DELIMITER.join([filter.physical_filter, grating])
102 # Also need to update aliases
103 new_aliases = {FILTER_DELIMITER.join([a, grating]) for a in filter.alias}
105 combo = FilterDefinition(physical_filter=new_name,
106 lambdaEff=filter.lambdaEff,
107 lambdaMin=filter.lambdaMin,
108 lambdaMax=filter.lambdaMax,
109 alias=new_aliases)
110 _latiss_filter_and_grating.append(combo)
113LATISS_FILTER_DEFINITIONS = FilterDefinitionCollection(*_latiss_filter_and_grating)