To obtain a proper installation I had to install libz3-dev, libcfitsio-dev and libnova-dev.
A symbolic link from /lib/arm-linux-gnueabihf/libz.so.1 to /lib/arm-linux-gnueabihf/libz.so was needed
otherwise I had the error message ld can not find lz
import sys, time, logging
import PyIndi
import numpy as np
exp_time=sys.argv[1]
name=sys.argv[2]
class IndiClient(PyIndi.BaseClient):
device = None
def __init__(self):
super(IndiClient, self).__init__()
self.logger = logging.getLogger('PyQtIndi.IndiClient')
self.logger.info('creating an instance of PyQtIndi.IndiClient')
def newDevice(self, d):
self.logger.info("new device " + d.getDeviceName())
if d.getDeviceName() == "Atik 383L+ CCD":
print ("found Atik 383L+ CCD")
self.logger.info("Atik 383L+ CCD")
# save reference to the device in member variable
self.device = d
'''
if d.getDeviceName() == "ZWO CCD ASI120MC":
print ("found ZWO CCD ASI120MC")
self.logger.info("ZWO CCD ASI120MC")
# save reference to the device in member variable
self.device = d
'''
def newProperty(self, p):
self.logger.info("new property "+ p.getName() + " for device "+ p.getDeviceName())
if self.device is not None and p.getName() == "CONNECTION" and p.getDeviceName() == self.device.getDeviceName():
self.logger.info("Got property CONNECTION for CCD Simulator!")
# connect to device
self.connectDevice(self.device.getDeviceName())
# set BLOB mode to BLOB_ALSO
self.setBLOBMode(1, self.device.getDeviceName(), None)
if p.getName() == "CCD_EXPOSURE":
# take first exposure
self.takeExposure()
def removeProperty(self, p):
self.logger.info("remove property "+ p.getName() + " for device "+ p.getDeviceName())
def newBLOB(self, bp):
#self.logger.info("new BLOB "+ bp.name)
# get image data
img = bp.getblobdata()
import io
# write image data to StringIO buffer
blobfile = io.BytesIO(img)
# open a file and save buffer to disk
with open("/home/user/Desktop/"+name+".fit", "wb") as f:
f.write(blobfile.getvalue())
# start new exposure for timelapse images!
# self.takeExposure()
# disconnect from server
self.disconnectServer()
def newSwitch(self, svp):
self.logger.info ("new Switch "+ svp.name + " for device "+ svp.device)
def newNumber(self, nvp):
self.logger.info("new Number "+ nvp.name + " for device "+ nvp.device)
def newText(self, tvp):
self.logger.info("new Text "+ tvp.name + " for device "+ tvp.device)
def newLight(self, lvp):
self.logger.info("new Light "+ lvp.name + " for device "+ lvp.device)
def newMessage(self, d, m):
#self.logger.info("new Message "+ d.messageQueue(m))
pass
def serverConnected(self):
print("Server connected ("+self.getHost()+":"+str(self.getPort())+")")
def serverDisconnected(self, code):
self.logger.info("Server disconnected (exit code = "+str(code)+","+str(self.getHost())+":"+str(self.getPort())+")")
def takeExposure(self):
self.logger.info(">>>>>>>>")
#get current exposure time
exp = self.device.getNumber("CCD_EXPOSURE")
exp[0].value = np.float(exp_time)
# send new exposure time to server/device
self.sendNewNumber(exp)
logging.basicConfig(format='%(asctime)s %(message)s', level=logging.INFO)
# instantiate the client
indiclient=IndiClient()
# set indi server localhost and port 7624
indiclient.setServer("localhost",7624)
# connect to indi server
print("Connecting to indiserver")
if (not(indiclient.connectServer())):
print("No indiserver running on "+indiclient.getHost()+":"+str(indiclient.getPort())+" - Try to run")
print(" indiserver indi_simulator_telescope indi_simulator_ccd")
sys.exit(1)
# start endless loop, client works asynchron in background
while True:
time.sleep(1)
So now I have a program, which takes an exposure of specified length and generate a file at the Desktop, but how do I control the cooling of the camera via python.
Do I just need to set the CCD_TEMPERATURE and the camera is taking care of the control loop, or do I have to monitor the CCD_TEMPERATURE and then switch the CCD_COOLER on and off? Is there some example code for this, especially with some syntax example?