358 lines
11 KiB
ReStructuredText
358 lines
11 KiB
ReStructuredText
Currently, ESBO-ETC only supports detectors of the type :ref:`imager`.
|
|
|
|
.. code-block:: xml
|
|
|
|
<sensor type="">
|
|
|
|
Attributes:
|
|
* | **type:** str
|
|
| The type of the detector. Has to be one of [``Imager``].
|
|
|
|
.. _imager:
|
|
|
|
Imager
|
|
------
|
|
The Imager sensor type allows to model a generic imaging sensor which uses a pixel based array to create only spatially resolved images. The imager-component contains several parameters which are explained in the following.
|
|
|
|
.. code-block:: xml
|
|
:linenos:
|
|
|
|
<sensor type="Imager">
|
|
<f_number val="13" val_unit=""/>
|
|
<pixel_geometry val="1024, 1024" val_unit="pix"/>
|
|
<center_offset val="0.0, 0.0" val_unit="pix"/>
|
|
<pixel>
|
|
<quantum_efficiency val="data/ccd/QE.txt"/>
|
|
<pixel_size val="6.5" val_unit="um"/>
|
|
<dark_current val="0.6" val_unit="electron / (pix * s)"/>
|
|
<sigma_read_out val="1.4" val_unit="electron(1/2) / pix"/>
|
|
<well_capacity val="30000" val_unit="electron"/>
|
|
</pixel>
|
|
<photometric_aperture>
|
|
<shape val="circle"/>
|
|
<contained_energy val="80"/>
|
|
<aperture_size val="100" val_unit="pix"/>
|
|
</photometric_aperture>
|
|
</sensor>
|
|
|
|
f_number
|
|
^^^^^^^^
|
|
The working focal number of the instrument.
|
|
|
|
.. code-block:: xml
|
|
|
|
<f_number val="13" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the working focal number of the instrument.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the working focal number of the instrument. This has to be emtpy (dimensionless).
|
|
|
|
.. _pixel_geometry:
|
|
|
|
pixel_geometry
|
|
^^^^^^^^^^^^^^
|
|
The geometry of the sensor's pixel array.
|
|
|
|
.. code-block:: xml
|
|
|
|
<pixel_geometry val="1024, 1024" val_unit="pix"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The geometry of the sensor's pixel array as a comma separated list of the number of pixels per dimension (X, Y).
|
|
* | **val_unit:** str, *optional* = "pix"
|
|
| The unit of the geometry of the sensor's pixel array. This has to be ``pix``.
|
|
|
|
.. _center_offset:
|
|
|
|
center_offset
|
|
^^^^^^^^^^^^^
|
|
The PSF's center offset from the arithmetical center of the detector array which is defined as half of the number of pixels per dimension as defined in :ref:`pixel_geometry`
|
|
|
|
.. code-block:: xml
|
|
|
|
<center_offset val="0.0, 0.0" val_unit="pix"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| PSF's center offset as a comma separated list of the offset in pixels per dimension (X, Y).
|
|
* | **val_unit:** str, *optional* = "pix"
|
|
| The unit of the PSF's center offset. This has to be ``pix``.
|
|
|
|
pixel
|
|
^^^^^
|
|
The pixel-container contains parameters which apply to all pixels of the sensor array.
|
|
|
|
.. code-block:: xml
|
|
:linenos:
|
|
|
|
<pixel>
|
|
<quantum_efficiency val="data/ccd/QE.txt"/>
|
|
<pixel_size val="6.5" val_unit="um"/>
|
|
<dark_current val="0.6" val_unit="electron / (pix * s)"/>
|
|
<sigma_read_out val="1.4" val_unit="electron(1/2) / pix"/>
|
|
<well_capacity val="30000" val_unit="electron"/>
|
|
</pixel>
|
|
|
|
quantum_efficiency
|
|
""""""""""""""""""
|
|
The quantum efficiency of a detector pixel.
|
|
|
|
.. code-block:: xml
|
|
|
|
<quantum_efficiency val="data/ccd/QE.txt"/>
|
|
|
|
Attributes:
|
|
* | **val:** (float, str)
|
|
| Either the value of the quantum efficiency or the path to the file containing the quantum efficiency values. For details on the required file structure see also :ref:`reading_csv`.
|
|
* | **val_unit:** str, *optional* = "electron / photon"
|
|
| The unit of the edge length of a detector pixel. This has to be ``electron / photon``.
|
|
|
|
pixel_size
|
|
""""""""""
|
|
The spatial size of each detector pixel. Each pixel is assumed to be of quadratic.
|
|
|
|
.. code-block:: xml
|
|
|
|
<pixel_size val="6.5" val_unit="um"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the edge length of a detector pixel.
|
|
* | **val_unit:** str, *optional* = "m"
|
|
| The unit of the edge length of a detector pixel. This has to be one of [``m``, ``cm``, ``mm``, ``um``, ``nm``, ``pm``]. The default is ``m``.
|
|
|
|
dark_current
|
|
""""""""""""
|
|
The dark current of a detector pixel.
|
|
|
|
.. code-block:: xml
|
|
|
|
<dark_current val="0.6" val_unit="electron / (pix * s)"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the dark current of a detector pixel.
|
|
* | **val_unit:** str, *optional* = "electron / (pix * s)"
|
|
| The unit of the dark current of a detector pixel. This has to be ``electron / (pix * s)``.
|
|
|
|
sigma_read_out
|
|
""""""""""""""
|
|
The read out noise of a detector pixel.
|
|
|
|
.. code-block:: xml
|
|
|
|
<sigma_read_out val="1.4" val_unit="electron(1/2) / pix"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the read out noise of a detector pixel.
|
|
* | **val_unit:** str, *optional* = "electron(1/2) / pix"
|
|
| The unit of the read out noise of a detector pixel. This has to be ``electron(1/2) / pix``.
|
|
|
|
well_capacity
|
|
"""""""""""""
|
|
The well capacity of a detector pixel.
|
|
|
|
.. code-block:: xml
|
|
|
|
<well_capacity val="30000" val_unit="electron"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the well capacity of a detector pixel.
|
|
* | **val_unit:** str, *optional* = "electron"
|
|
| The unit of the well capacity of a detector pixel. This has to be ``electron``.
|
|
|
|
photometric_aperture
|
|
^^^^^^^^^^^^^^^^^^^^
|
|
*optional*
|
|
|
|
The photometric_aperture-container contains parameters for the photometric aperture of the observation. This container is only required, if the :ref:`target` has the shape ``point``.
|
|
|
|
.. code-block:: xml
|
|
:linenos:
|
|
|
|
<photometric_aperture/>
|
|
<shape val="circle"/>
|
|
<contained_energy val="80"/>
|
|
<aperture_size val="100" val_unit="pix"/>
|
|
</photometric_aperture>
|
|
|
|
shape
|
|
"""""
|
|
The shape of the photometric aperture which will be placed around the center of the PSF which is defined by :ref:`center_offset`. After the radius of the photometric aperture was calculated using a disk for the given :ref:`contained_energy`, this radius will be used as radius or edge length of the photometric aperture shape.
|
|
|
|
.. code-block:: xml
|
|
|
|
<shape val="circle"/>
|
|
|
|
Attributes:
|
|
* | **val:** str
|
|
| The shape of the photometric aperture. This has to be one of [``circle``, ``square``].
|
|
|
|
.. _contained_energy:
|
|
|
|
contained_energy
|
|
""""""""""""""""
|
|
*optional*
|
|
|
|
The energy to be contained within the photometric aperture. This value will used for the computation of the radius of the photometric aperture.
|
|
|
|
.. code-block:: xml
|
|
|
|
<contained_energy val="80"/>
|
|
|
|
Attributes:
|
|
* | **val:** (float, str)
|
|
| The energy to be contained within the photometric aperture. This can be either the percentage of contained energy or one of [``Peak``, ``FWHM``, ``Min``].
|
|
|
|
aperture_size
|
|
""""""""""""""""
|
|
*optional*
|
|
|
|
The radius respectively the edge length of the photometric aperture in pixels. If this parameter is given, the :ref:`contained_energy` parameter will be ignored.
|
|
|
|
.. code-block:: xml
|
|
|
|
<aperture_size val="100" val_unit="pix"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The radius respectively the edge length of the photometric aperture.
|
|
* | **val_unit:** str, *optional* = "pix"
|
|
| The unit of the radius respectively the edge length of the photometric aperture. This has to be ``pix``.
|
|
|
|
Heterodyne
|
|
----------
|
|
The heterodyne sensor type allows to model a generic DSB heterodyne radio receiver which uses an local oscillator and an mixer to create spectral images. The heterodyne-component contains several parameters which are explained in the following. All parameters are defined according to the `Guide to GREAT <https://www.sofia.usra.edu/science/proposing-and-observing/observers-handbook-cycle-9/6-great/61-specifications#PerformanceGREAT>`_.
|
|
|
|
.. code-block:: xml
|
|
:linenos:
|
|
|
|
<sensor type="Heterodyne">
|
|
<aperture_efficiency val="0.55" val_unit=""/>
|
|
<main_beam_efficiency val="0.67" val_unit=""/>
|
|
<receiver_temp val="1050" val_unit="K"/>
|
|
<eta_fss val="0.97" val_unit=""/>
|
|
<lambda_line val="157.774" val_unit="um"/>
|
|
<lambda_local_oscillator val="158" val_unit="um"/>
|
|
<kappa val="1" val_unit=""/>
|
|
<n_on val="10" val_unit=""/>
|
|
</sensor>
|
|
|
|
aperture_efficiency
|
|
^^^^^^^^^^^^^^^^^^^
|
|
The aperture efficiency of the instrument.
|
|
|
|
.. code-block:: xml
|
|
|
|
<aperture_efficiency val="0.55" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the aperture efficiency of the instrument.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the aperture efficiency of the instrument. This has to be emtpy (dimensionless).
|
|
|
|
main_beam_efficiency
|
|
^^^^^^^^^^^^^^^^^^^^
|
|
The main beam efficiency of the instrument.
|
|
|
|
.. code-block:: xml
|
|
|
|
<main_beam_efficiency val="0.67" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The value of the main beam efficiency of the instrument.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the main beam efficiency of the instrument. This has to be emtpy (dimensionless).
|
|
|
|
receiver_temp
|
|
^^^^^^^^^^^^^
|
|
The receiver's noise temperature.
|
|
|
|
.. code-block:: xml
|
|
|
|
<receiver_temp val="1050" val_unit="K"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The receiver's noise temperature.
|
|
* | **val_unit:** str, *optional* = "K"
|
|
| The unit of the receiver temperature. This has to be on of [``K``, ``Celsius``].
|
|
|
|
eta_fss
|
|
^^^^^^^
|
|
The forward scattering efficiency of the detector.
|
|
|
|
.. code-block:: xml
|
|
|
|
<eta_fss val="0.97" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The forward scattering efficiency of the detector.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the forward scattering efficiency of the instrument. This has to be emtpy (dimensionless).
|
|
|
|
lambda_line
|
|
^^^^^^^^^^^
|
|
The wavelength or frequency of the observed line.
|
|
|
|
.. code-block:: xml
|
|
|
|
<lambda_line val="157.774" val_unit="um"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The wavelength of the observed line.
|
|
* | **val_unit:** str, *optional* = "m"
|
|
| The unit of the observed line wavelength. This has to be on of [``nm``, ``um``, ``mm``, ``cm``, ``m``, ``Hz``, ``kHZ``, ``MHz``, ``GHz``, ``THz``].
|
|
|
|
lambda_local_oscillator
|
|
^^^^^^^^^^^
|
|
The wavelength or frequency of the local oscillator. This parameter is optional. If no value is given, the noise temperature of the signal band is doubled.
|
|
|
|
.. code-block:: xml
|
|
|
|
<lambda_local_oscillator val="158" val_unit="um"/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The wavelength of the local oscillator.
|
|
* | **val_unit:** str, *optional* = "m"
|
|
| The unit of the local oscillator wavelength. This has to be on of [``nm``, ``um``, ``mm``, ``cm``, ``m``, ``Hz``, ``kHZ``, ``MHz``, ``GHz``, ``THz``].
|
|
|
|
|
|
kappa
|
|
^^^^^
|
|
The instrument's backend degradation factor.
|
|
|
|
.. code-block:: xml
|
|
|
|
<kappa val="1" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The instrument's backend degradation factor.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the backend degradation factor. This has to be emtpy (dimensionless).
|
|
|
|
n_on
|
|
^^^^
|
|
The number of on-source observations per off-source observation.
|
|
|
|
.. code-block:: xml
|
|
|
|
<n_on val="10" val_unit=""/>
|
|
|
|
Attributes:
|
|
* | **val:** float
|
|
| The number of on-source observations per off-source observation.
|
|
* | **val_unit:** str, *optional* = ""
|
|
| The unit of the number of on-source observations per off-source observation. This has to be emtpy (dimensionless).
|