def __init__(self):
CameraBase.__init__(self)
FilterWheelBase.__init__(self)
self.drv = SBIGDrv()
self.ccd = SBIGDrv.imaging
self.dev = SBIGDrv.usb
self["device"] = 'USB'
self.lastTemp = 0
self.lastFilter = None
self.lastFrameStartTime = 0
self.lastFrameTemp = None
self.lastFrameFilename = ""
self.setHz(1.0 / 5)
self._supports = {CameraFeature.TEMPERATURE_CONTROL: True,
CameraFeature.PROGRAMMABLE_GAIN: False,
CameraFeature.PROGRAMMABLE_OVERSCAN: False,
CameraFeature.PROGRAMMABLE_FAN: False,
CameraFeature.PROGRAMMABLE_LEDS: True,
CameraFeature.PROGRAMMABLE_BIAS_LEVEL: False}
self._ccds = {SBIGDrv.imaging: CCD.IMAGING,
SBIGDrv.tracking: CCD.TRACKING}
self._adcs = {"12 bits": 0}
self._binnings = {"1x1": 0,
"2x2": 1,
"3x3": 2,
"9x9": 9}
self._binning_factors = {"1x1": 1,
"2x2": 2,
"3x3": 3,
"9x9": 9}
class SBIG(CameraBase, FilterWheelBase):
def __init__(self):
CameraBase.__init__(self)
FilterWheelBase.__init__(self)
self.drv = SBIGDrv()
self.ccd = SBIGDrv.imaging
self.dev = SBIGDrv.usb
self["device"] = 'USB'
self.lastTemp = 0
self.lastFilter = None
self.lastFrameStartTime = 0
self.lastFrameTemp = None
self.lastFrameFilename = ""
self.setHz(1.0 / 5)
self._supports = {CameraFeature.TEMPERATURE_CONTROL: True,
CameraFeature.PROGRAMMABLE_GAIN: False,
CameraFeature.PROGRAMMABLE_OVERSCAN: False,
CameraFeature.PROGRAMMABLE_FAN: False,
CameraFeature.PROGRAMMABLE_LEDS: True,
CameraFeature.PROGRAMMABLE_BIAS_LEVEL: False}
self._ccds = {SBIGDrv.imaging: CCD.IMAGING,
SBIGDrv.tracking: CCD.TRACKING}
self._adcs = {"12 bits": 0}
self._binnings = {"1x1": 0,
"2x2": 1,
"3x3": 2,
"9x9": 9}
self._binning_factors = {"1x1": 1,
"2x2": 2,
"3x3": 3,
"9x9": 9}
def __start__(self):
ccd_config = ""
if self['ccd'] == CCD.IMAGING:
self.ccd = SBIGDrv.imaging
self["ccd_model"] = "IMAGING"
else:
self.ccd = SBIGDrv.tracking
self["ccd_model"] = "TRACKING"
self.open(self.dev)
# make sure filter wheel is in the right position
self.setFilter(self.getFilters()[0])
self["camera_model"] = self.drv.cameraNames[self.ccd]
self["filter_wheel_model"] = self.drv.filterModel
def __stop__(self):
try:
self.stopFan()
self.stopCooling()
self.close()
except SBIGException:
pass
@lock
def open(self, device):
self.drv.openDriver()
self.drv.openDevice(device)
self.drv.establishLink()
self.drv.queryCCDInfo()
return True
@lock
def close(self):
try:
self.drv.closeDevice()
self.drv.closeDriver()
except SBIGException:
pass
@lock
def ping(self):
return self.drv.isLinked()
@lock
def startCooling(self, tempC):
self.drv.setTemperature(True, tempC)
return True
@lock
def stopCooling(self):
self.drv.setTemperature(False, self.getSetPoint())
return True
@lock
def isCooling(self):
return bool(self.drv.getTemperature()[0])
@lock
def getTemperature(self):
return self.drv.getTemperature()[-1]
@lock
def getSetPoint(self):
return self.drv.getTemperature()[-2]
@lock
def startFan(self, rate=None):
self.drv.startFan()
@lock
def stopFan(self):
self.drv.stopFan()
def isFanning(self):
return self.drv.isFanning()
def getFilter(self):
# SBIG support for this is very poor, we just keep track mannualy
return self.lastFilter
@lock
def setFilter(self, filter):
# Chimera uses filter starting with 0, and SBIG uses 1
position = self.drv.filters.get(
self._getFilterPosition(filter) + 1, None)
if not position:
raise ValueError("Selected filter not defined on SBIG driver.")
if self.lastFilter == None:
self.lastFilter = self.getFilter()
self.drv.setFilterPosition(position)
while self.drv.getFilterStatus() != 1: # while not idle
time.sleep(.5)
self.filterChange(filter, self.lastFilter)
self.lastFilter = filter
return True
def getCCDs(self):
return self._ccds
def getCurrentCCD(self):
return self.ccd
def getBinnings(self):
return self._binnings
def getADCs(self):
return self._adcs
def getPhysicalSize(self):
return self.drv.readoutModes[self.ccd][0].getSize()
def getPixelSize(self):
return self.drv.readoutModes[self.ccd][0].getPixelSize()
def getOverscanSize(self):
return (0, 0)
def getReadoutModes(self):
return self.drv.readoutModes
def supports(self, feature=None):
return self._supports[feature]
def _expose(self, imageRequest):
shutterRequest = imageRequest['shutter']
if shutterRequest == Shutter.OPEN:
shutter = SBIGDrv.openShutter
elif shutterRequest == Shutter.CLOSE:
shutter = SBIGDrv.closeShutter
elif shutterRequest == Shutter.LEAVE_AS_IS:
shutter = SBIGDrv.leaveShutter
else:
self.log.warning("Incorrect shutter option (%s)."
" Leaving shutter intact" % shutterRequest)
shutter = SBIGDrv.leaveShutter
# ok, start it
self.exposeBegin(imageRequest)
self.drv.startExposure(self.ccd,
int(imageRequest["exptime"] * 100), shutter)
# save time exposure started
self.lastFrameStartTime = dt.datetime.utcnow()
self.lastFrameTemp = self.getTemperature()
status = CameraStatus.OK
while self.drv.exposing(self.ccd):
# [ABORT POINT]
if self.abort.isSet():
status = CameraStatus.ABORTED
break
# this sleep is EXTREMELY important: without it, Python would stuck on this
# thread and abort will not work.
time.sleep(0.01)
# end exposure and returns
return self._endExposure(imageRequest, status)
def _endExposure(self, request, status):
self.drv.endExposure(self.ccd)
self.exposeComplete(request, status)
return True
def _readout(self, imageRequest):
(mode, binning, top, left,
width, height) = self._getReadoutModeInfo(imageRequest["binning"],
imageRequest["window"])
# readout
img = N.zeros((height, width), N.int32)
self.readoutBegin(imageRequest)
self.drv.startReadout(self.ccd, mode.mode, (top, left, width, height))
for line in range(height):
# [ABORT POINT]
if self.abort.isSet():
self._endReadout(None, CameraStatus.ABORTED)
return False
img[line] = self.drv.readoutLine(
self.ccd, mode.mode, (left, width))
proxy = self._saveImage(imageRequest, img,
{"frame_temperature": self.lastFrameTemp,
"frame_start_time": self.lastFrameStartTime,
"binning_factor": self._binning_factors[binning]})
return self._endReadout(proxy, CameraStatus.OK)
def _endReadout(self, proxy, status):
self.drv.endReadout(self.ccd)
self.readoutComplete(proxy, status)
return proxy
def getMetadata(self, request):
headers = []
headers += super(CameraBase, self).getMetadata(request)
headers += super(FilterWheelBase, self).getMetadata(request)
return headers