pypeit.spectrographs.p200_dbsp module

Module for P200/DBSP specific methods.

class pypeit.spectrographs.p200_dbsp.P200DBSPBlueSpectrograph[source]

Bases: P200DBSPSpectrograph

Child to handle P200/DBSP blue specific code

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

comment = 'Blue camera': A brief comment or description regarding PypeIt usage with this spectrograph.

compound_meta(headarr: List[Header], meta_key: str)[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_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

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

get_detector_par(det: int, hdu: HDUList | None = None)[source]

Return metadata for the selected detector.

Warning

Many of the necessary detector parameters are read from the file header, meaning the hdu argument is effectively required for P200/DBSPb. The optional use of hdu is only viable for automatically generated documentation.

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

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

name = 'p200_dbsp_blue': The name of the spectrograph. See Spectrographs for the currently supported spectrographs.

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.

class pypeit.spectrographs.p200_dbsp.P200DBSPRedSpectrograph[source]

Bases: P200DBSPSpectrograph

Child to handle P200/DBSPr red specific code

bpm(filename, det, shape=None, msbias=None)[source]

Override parent bpm function with BPM specific to P200 DBSPr.

Parameters:

det (int) – Detector number
msbias (numpy.ndarray) – Processed bias frame used when constructing the bpm (see bpm_frombias())

Returns:

bpix – 0 = ok; 1 = Mask

Return type:

ndarray

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

comment = 'Red camera': A brief comment or description regarding PypeIt usage with this spectrograph.

compound_meta(headarr: List[Header], meta_key: str)[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_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

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

get_detector_par(det: int, hdu: HDUList | None = None)[source]

Return metadata for the selected detector.

Warning

Many of the necessary detector parameters are read from the file header, meaning the hdu argument is effectively required for P200/DBSPr. The optional use of hdu is only viable for automatically generated documentation.

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

header_name = 'DBSP_RED2': Name of the spectrograph camera or arm from the Header. Usually the INSTRUME card.

name = 'p200_dbsp_red': The name of the spectrograph. See Spectrographs for the currently supported spectrographs.

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.

class pypeit.spectrographs.p200_dbsp.P200DBSPSpectrograph[source]

Bases: Spectrograph

Child to handle P200/DBSP specific code

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: List[Header], meta_key: str)[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

configuration_keys()[source]

Return the metadata keys that define a unique instrument configuration.

This list is used by PypeItMetaData to identify the unique configurations among the list of frames read for a given reduction.

Returns:: List of keywords of data pulled from file headers and used to constuct the PypeItMetaData object.
Return type:: list

get_rawimage(raw_file, det)[source]

Read raw spectrograph image files and return data and relevant metadata needed for image processing.

For P200/DBSP, the DATASEC and OSCANSEC regions are read directly from the file header and are automatically adjusted to account for the on-chip binning. This is a simple wrapper for pypeit.spectrographs.spectrograph.Spectrograph.get_rawimage() that sets sec_includes_binning to True. See the base-class function for the detailed descriptions of the input parameters and returned objects.

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.

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

pypeit_file_keys()[source]

Define the list of keys to be output into a standard PypeIt file.

Returns:: The list of keywords in the relevant PypeItMetaData instance to print to the PypeIt Reduction File.
Return type:: list

raw_header_cards()[source]

Return additional raw header cards to be propagated in downstream output files for configuration identification.

The list of raw data FITS keywords should be those used to populate the configuration_keys() or are used in config_specific_par() for a particular spectrograph, if different from the name of the PypeIt metadata keyword.

This list is used by subheader_for_spec() to include additional FITS keywords in downstream output files.

Returns:: List of keywords from the raw data files that should be propagated in output files.
Return type:: list

telescope = Parameter Value Default Type Callable ---------------------------------------------------------------- name P200 KECK str False longitude -116.86300000000003 None int, float False latitude 33.35600000000001 None int, float False elevation 1705.999999999058 None int, float False fratio None None int, float False diameter 5.1 None int, float False eff_aperture None None int, float False : Instance of TelescopePar providing telescope-specific metadata.

url = 'https://sites.astro.caltech.edu/palomar/observer/200inchResources/dbspoverview.html': Reference url

pypeit.spectrographs.p200_dbsp.flip_fits_slice(s: str) → str[source]