def makeCamera(name="SDSS", outputDir=None):
"""Make a camera
@param name: name of the camera
@param outputDir: If not None, write the objects used to make the camera to this location
@return a camera object
"""
camConfig = CameraConfig()
camConfig.name = name
camConfig.detectorList = {}
camConfig.plateScale = 16.5 # arcsec/mm
pScaleRad = geom.arcsecToRad(camConfig.plateScale)
radialDistortCoeffs = [0.0, 1.0 / pScaleRad]
tConfig = afwGeom.TransformConfig()
tConfig.transform.name = 'inverted'
radialClass = afwGeom.transformRegistry['radial']
tConfig.transform.active.transform.retarget(radialClass)
tConfig.transform.active.transform.coeffs = radialDistortCoeffs
tmc = TransformMapConfig()
tmc.nativeSys = FOCAL_PLANE.getSysName()
tmc.transforms = {FIELD_ANGLE.getSysName(): tConfig}
camConfig.transformDict = tmc
ccdId = 0
ampInfoCatDict = {}
for i in range(6):
dewarName = str(i + 1)
filters = "riuzg"
for j, c in enumerate(reversed(filters)):
ccdName = "%s%s" % (c, dewarName)
offsetPoint = geom.Point2D(25.4 * 2.5 * (2.5 - i),
25.4 * 2.1 * (2.0 - j))
ccdInfo = makeCcd(ccdName, ccdId, offsetPoint)
ampInfoCatDict[ccdName] = ccdInfo['ampInfo']
camConfig.detectorList[ccdId] = ccdInfo['ccdConfig']
ccdId += 1
if outputDir is not None:
camConfig.save(os.path.join(outputDir, 'camera.py'))
for k in ampInfoCatDict:
ampInfoCatDict[k].writeFits(
os.path.join(outputDir, "%s.fits" % (k)))
return makeCameraFromAmpLists(camConfig, ampInfoCatDict)
pincushion = 0.925
# Don't have this yet ticket/3155
# camConfig.boresiteOffset_x = 0.
# camConfig.boresiteOffset_y = 0.
tConfig = afwGeom.TransformConfig()
tConfig.transform.name = 'inverted'
radialClass = afwGeom.transformRegistry['radial']
tConfig.transform.active.transform.retarget(radialClass)
# According to Dave M. the simulated LSST transform is well approximated (1/3 pix)
# by a scale and a pincusion.
tConfig.transform.active.transform.coeffs = [
0., 1. / pScaleRad, 0., pincushion / pScaleRad
]
# tConfig.transform.active.boresiteOffset_x = camConfig.boresiteOffset_x
# tConfig.transform.active.boresiteOffset_y = camConfig.boresiteOffset_y
tmc = TransformMapConfig()
tmc.nativeSys = FOCAL_PLANE.getSysName()
tmc.transforms = {FIELD_ANGLE.getSysName(): tConfig}
camConfig.transformDict = tmc
def makeDir(dirPath, doClobber=False):
"""Make a directory; if it exists then clobber or fail, depending on doClobber
@param[in] dirPath: path of directory to create
@param[in] doClobber: what to do if dirPath already exists:
if True and dirPath is a dir, then delete it and recreate it, else raise an exception
@throw RuntimeError if dirPath exists and doClobber False
"""
if os.path.exists(dirPath):
if doClobber and os.path.isdir(dirPath):
print("Clobbering directory %r" % (dirPath, ))