Coverage for python/lsst/obs/cfht/_instrument.py: 57%
42 statements
« prev ^ index » next coverage.py v7.5.1, created at 2024-05-10 03:18 -0700
« prev ^ index » next coverage.py v7.5.1, created at 2024-05-10 03:18 -0700
1# This file is part of obs_cfht.
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"""Butler instrument description for the CFHT MegaCam camera.
23"""
25__all__ = ("MegaPrime",)
27import os
28from functools import lru_cache
30from astro_metadata_translator import MegaPrimeTranslator
31from lsst.afw.cameraGeom import makeCameraFromPath, CameraConfig
32from lsst.obs.base import Instrument, VisitSystem
33from .cfhtFilters import MEGAPRIME_FILTER_DEFINITIONS
35from lsst.utils.introspection import get_full_type_name
36from lsst.utils import getPackageDir
39class MegaPrime(Instrument):
40 filterDefinitions = MEGAPRIME_FILTER_DEFINITIONS
41 policyName = "megacam"
42 obsDataPackage = None
43 translatorClass = MegaPrimeTranslator
45 def __init__(self, **kwargs):
46 super().__init__(**kwargs)
47 packageDir = getPackageDir("obs_cfht")
48 self.configPaths = [os.path.join(packageDir, "config")]
50 @classmethod
51 def getName(cls):
52 return "MegaPrime"
54 def getCamera(self):
55 path = os.path.join(getPackageDir("obs_cfht"), self.policyName, "camera")
56 return self._getCameraFromPath(path)
58 @staticmethod
59 @lru_cache()
60 def _getCameraFromPath(path):
61 """Return the camera geometry given solely the path to the location
62 of that definition."""
63 config = CameraConfig()
64 config.load(os.path.join(path, "camera.py"))
65 return makeCameraFromPath(
66 cameraConfig=config,
67 ampInfoPath=path,
68 shortNameFunc=lambda name: name.replace(" ", "_"),
69 )
71 def register(self, registry, update=False):
72 camera = self.getCamera()
73 obsMax = 2**31
74 with registry.transaction():
75 registry.syncDimensionData(
76 "instrument",
77 {
78 "name": self.getName(), "detector_max": 36, "visit_max": obsMax, "exposure_max": obsMax,
79 "class_name": get_full_type_name(self),
80 # Some schemas support default visit_system
81 "visit_system": VisitSystem.ONE_TO_ONE.value,
82 },
83 update=update
84 )
86 for detector in camera:
87 registry.syncDimensionData(
88 "detector",
89 {
90 "instrument": self.getName(),
91 "id": detector.getId(),
92 "full_name": detector.getName(),
93 "name_in_raft": detector.getName(),
94 "raft": None, # MegaPrime does not have rafts
95 "purpose": str(detector.getType()).split(".")[-1],
96 },
97 update=update
98 )
100 self._registerFilters(registry, update=update)
102 def getRawFormatter(self, dataId):
103 # local import to prevent circular dependency
104 from .rawFormatter import MegaPrimeRawFormatter
105 return MegaPrimeRawFormatter