pypeit.spectrographs.tng_dolores module

Module for TNG/Dolores

class pypeit.spectrographs.tng_dolores.TNGDoloresSpectrograph[source]

Bases: Spectrograph

Child to handle Shane/Kast specific code

camera = 'DOLORES'

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.


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

Return type:


comment = 'DOLORES (LRS) spectrograph; LR-R'

A brief comment or description regarding PypeIt usage with this spectrograph.

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.


Metadata value read from the header(s).

Return type:


config_specific_par(scifile, inp_par=None)[source]

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

  • scifile (str) – File to use when determining the configuration and how to adjust the input parameters.

  • inp_par (pypeit.par.parset.ParSet, optional) – Parameter set used for the full run of PypeIt. If None, use default_pypeit_par().


The PypeIt paramter set adjusted for configuration specific parameter values.

Return type:



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.


List of keywords of data pulled from file headers and used to constuct the PypeItMetaData object.

Return type:


classmethod default_pypeit_par()[source]

Return the default parameters to use for this instrument.


Parameters required by all of PypeIt methods.

Return type:


get_detector_par(det, hdu=None)[source]

Return metadata for the selected detector.

  • det (int) – 1-indexed detector number.

  • hdu (, optional) – The open fits file with the raw image of interest. If not provided, frame-dependent parameters are set to a default.


Object with the detector metadata.

Return type:



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.

name = 'tng_dolores'

The name of the spectrograph. See Spectrographs for the currently supported spectrographs.

ndet = 1

Number of detectors for this instrument.


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.


List of keywords from the raw data files that should be propagated in output files.

Return type:


telescope = Parameter     Value                Default  Type        Callable ---------------------------------------------------------------- name          TNG                  KECK     str         False    longitude     -17.879999999999995  None     int, float  False    latitude      28.758333333333336   None     int, float  False    elevation     2326.999999998442    None     int, float  False    fratio        None                 None     int, float  False    diameter      3.58                 None     int, float  False    eff_aperture  None                 None     int, float  False   

Instance of TelescopePar providing telescope-specific metadata.

url = ''

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