Coverage for python/lsst/obs/cfht/_instrument.py: 48%
40 statements
« prev ^ index » next coverage.py v7.2.5, created at 2023-05-19 05:44 -0700
« prev ^ index » next coverage.py v7.2.5, created at 2023-05-19 05:44 -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 lsst.afw.cameraGeom import makeCameraFromPath, CameraConfig
31from lsst.obs.base import Instrument, VisitSystem
32from .cfhtFilters import MEGAPRIME_FILTER_DEFINITIONS
34from lsst.utils.introspection import get_full_type_name
35from lsst.utils import getPackageDir
38class MegaPrime(Instrument):
39 filterDefinitions = MEGAPRIME_FILTER_DEFINITIONS
40 policyName = "megacam"
41 obsDataPackage = None
43 def __init__(self, **kwargs):
44 super().__init__(**kwargs)
45 packageDir = getPackageDir("obs_cfht")
46 self.configPaths = [os.path.join(packageDir, "config")]
48 @classmethod
49 def getName(cls):
50 return "MegaPrime"
52 def getCamera(self):
53 path = os.path.join(getPackageDir("obs_cfht"), self.policyName, "camera")
54 return self._getCameraFromPath(path)
56 @staticmethod
57 @lru_cache()
58 def _getCameraFromPath(path):
59 """Return the camera geometry given solely the path to the location
60 of that definition."""
61 config = CameraConfig()
62 config.load(os.path.join(path, "camera.py"))
63 return makeCameraFromPath(
64 cameraConfig=config,
65 ampInfoPath=path,
66 shortNameFunc=lambda name: name.replace(" ", "_"),
67 )
69 def register(self, registry, update=False):
70 camera = self.getCamera()
71 obsMax = 2**31
72 with registry.transaction():
73 registry.syncDimensionData(
74 "instrument",
75 {
76 "name": self.getName(), "detector_max": 36, "visit_max": obsMax, "exposure_max": obsMax,
77 "class_name": get_full_type_name(self),
78 # Some schemas support default visit_system
79 "visit_system": VisitSystem.ONE_TO_ONE.value,
80 },
81 update=update
82 )
84 for detector in camera:
85 registry.syncDimensionData(
86 "detector",
87 {
88 "instrument": self.getName(),
89 "id": detector.getId(),
90 "full_name": detector.getName(),
91 "name_in_raft": detector.getName(),
92 "raft": None, # MegaPrime does not have rafts
93 "purpose": str(detector.getType()).split(".")[-1],
94 },
95 update=update
96 )
98 self._registerFilters(registry, update=update)
100 def getRawFormatter(self, dataId):
101 # local import to prevent circular dependency
102 from .rawFormatter import MegaPrimeRawFormatter
103 return MegaPrimeRawFormatter