pypeit.spectrographs.apf_levy module

Implements APF-specific functions

class pypeit.spectrographs.apf_levy.APFLevySpectrograph[source]

Bases: Spectrograph

Child to handle APF specific code.

This spectrograph is partially supported. The data will be reduced but it will require some user intervention by editing the pypeit file.

camera = 'apf': Name of the spectrograph camera or arm. This is used by specdb, so use that naming convention

check_frame_type(ftype, fitstbl, exprng=None)[source]

Check for frames of the provided type.

Parameters:

ftype (str) – Type of frame to check. Must be a valid frame type; see frame-type Definitions.
fitstbl (astropy.table.Table) – The table with the metadata for one or more frames to check.
exprng (list, optional) – Range in the allowed exposure time for a frame of type ftype. See pypeit.core.framematch.check_frame_exptime().

Returns:

Boolean array with the flags selecting the exposures in fitstbl that are ftype type frames.

Return type:

numpy.ndarray

compound_meta(headarr, meta_key)[source]

Methods to generate metadata requiring interpretation of the header data, instead of simply reading the value of a header card.

Parameters:

headarr (list) – List of astropy.io.fits.Header objects.
meta_key (str) – Metadata keyword to construct.

Returns:

Metadata value read from the header(s).

Return type:

object

config_independent_frames()[source]

Define frame types that are independent of the fully defined instrument configuration.

This method returns a dictionary where the keys of the dictionary are the list of configuration-independent frame types. The value of each dictionary element can be set to one or more metadata keys that can be used to assign each frame type to a given configuration group. See set_configurations() and how it interprets the dictionary values, which can be None.

Returns:: Dictionary where the keys are the frame types that are configuration-independent and the values are the metadata keywords that can be used to assign the frames to a configuration group.
Return type:: dict

config_specific_par(scifile, inp_par=None)[source]

Modify the PypeIt parameters to hard-wired values used for specific instrument configurations.

Parameters:

scifile (str) – File to use when determining the configuration and how to adjust the input parameters.
inp_par (ParSet, optional) – Parameter set used for the full run of PypeIt. If None, use default_pypeit_par().

Returns:

The PypeIt parameter set adjusted for configuration specific parameter values.

Return type:

ParSet

configuration_keys()[source]

Return the default parameters to use for this instrument.

Returns:: Parameters required by all of PypeIt methods.
Return type:: PypeItPar

classmethod default_pypeit_par()[source]

Return the default parameters to use for this instrument.

Returns:: Parameters required by all of PypeIt methods.
Return type:: PypeItPar

ech_fixed_format = True: If an echelle spectrograph, this will be set to a boolean indicating whether it is a fixed format or tiltable echelle.

get_detector_par(det, hdu=None)[source]

Return metadata for the selected detector.

Parameters:

det (int) – 1-indexed detector number.
hdu (astropy.io.fits.HDUList, optional) – The open fits file with the raw image of interest. If not provided, frame-dependent parameters are set to a default.

Returns:

Object with the detector metadata.

Return type:

DetectorContainer

get_rawimage(raw_file, det, sec_includes_binning=True)[source]: Read the image

header_name = 'apf': Name of the spectrograph camera or arm from the Header. Usually the INSTRUME card.

init_meta()[source]

Define how metadata are derived from the spectrograph files.

That is, this associates the PypeIt-specific metadata keywords with the instrument-specific header cards using meta.

is_science(fitstbl)[source]: Return a boolean array selecting science frames.

name = 'apf_levy': The name of the spectrograph. See Spectrographs for the currently supported spectrographs.

ndet = 1: Number of detectors for this instrument.

property norders: Number of orders for this spectograph. Should only defined for echelle spectrographs, and it is undefined for the base class.

order_platescale(order_vec, binning=None)[source]

Return the platescale for each echelle order.

This routine is only defined for echelle spectrographs, and it is undefined in the base class.

Parameters:

order_vec (numpy.ndarray) – The vector providing the order numbers.
binning (str, optional) – The string defining the spectral and spatial binning.

Returns:

An array with the platescale for each order provided by order.

Return type:

numpy.ndarray

property order_spat_pos: Return the expected spatial position of each echelle order.

property orders: Return the order number for each echelle order.

pypeline = 'Echelle': String used to select the general pipeline approach for this spectrograph.

supported = True: Flag that PypeIt code base has been sufficiently tested with data from this spectrograph that it is officially supported by the development team.

telescope = Parameter Value Default Type Callable ---------------------------------------------------------------- name APF KECK str False longitude -121.63666666666666 None int, float False latitude 37.34333333333334 None int, float False elevation 1290.0000000004732 None int, float False fratio None None int, float False diameter 2.4 None int, float False eff_aperture None None int, float False : Instance of TelescopePar providing telescope-specific metadata.