71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
import esbo_etc as eetc
|
|
from esbo_etc.lib.logger import logger
|
|
from esbo_etc.lib.cache import cache
|
|
import logging as log
|
|
import astropy.units as u
|
|
|
|
|
|
class esbo_etc:
|
|
"""
|
|
Top level class of the exposure time calculator
|
|
"""
|
|
|
|
def __init__(self, config: str = "esbo-etc_defaults.xml", logging: int = log.WARNING, spin: bool = False):
|
|
"""
|
|
Initialize a new exposure time calculator (ETC)
|
|
|
|
Parameters
|
|
----------
|
|
config : str
|
|
Path to the configuration file
|
|
logging : int
|
|
Loglevel from package logging
|
|
spin : bool
|
|
Show a spinner during computations
|
|
"""
|
|
self.__config = config
|
|
self.__logging = logging
|
|
self.__spin = spin
|
|
self.conf = None
|
|
|
|
def run(self) -> u.Quantity:
|
|
"""
|
|
|
|
Returns
|
|
-------
|
|
res: Quantity
|
|
The result of the computation. Depending on the input parameters, this will be either a dimensionless
|
|
signal-to-noise ratio (SNR), an exposure time in seconds or a sensitivity in apparent magnitues.
|
|
"""
|
|
# Set up logging
|
|
logger.setLevel(log.WARNING if self.__logging is None else self.__logging)
|
|
if self.__spin:
|
|
logger.addHandler(eetc.SpinnerHandler())
|
|
|
|
# Parse Configuration
|
|
logger.info("Parsing configuration...", extra={"spinning": True})
|
|
self.conf = eetc.Configuration(self.__config).conf
|
|
|
|
# Set up components
|
|
logger.info("Setting up components...", extra={"spinning": True})
|
|
target_factory = eetc.TargetFactory(self.conf.common)
|
|
oc_factory = eetc.OpticalComponentFactory(self.conf.common)
|
|
sensor_factory = eetc.SensorFactory(self.conf.common)
|
|
|
|
parent = target_factory.create(self.conf.astroscene.target)
|
|
parent = oc_factory.fromConfigBatch(self.conf, parent)
|
|
|
|
detector = sensor_factory.create(self.conf.instrument.sensor, parent)
|
|
|
|
# Calculate results
|
|
res = None
|
|
if hasattr(self.conf.common, "exposure_time") and hasattr(self.conf.common, "snr"):
|
|
res = detector.getSensitivity(self.conf.common.exposure_time(), self.conf.common.snr(),
|
|
self.conf.astroscene.target.mag)
|
|
elif hasattr(self.conf.common, "exposure_time"):
|
|
res = detector.getSNR(self.conf.common.exposure_time())
|
|
elif hasattr(self.conf.common, "snr"):
|
|
res = detector.getExpTime(self.conf.common.snr())
|
|
cache.close()
|
|
return res
|