NistClass¶

class astroquery.nist.NistClass[source]¶

Bases: astroquery.query.BaseQuery

Attributes Summary

`TIMEOUT`
`URL`
`energy_level_code`
`order_out_code`
`unit_code`
`wavelength_unit_code`

Methods Summary

`query`(args, *kwargs)	Queries the service and returns a table object.
`query_async`(minwav, maxwav[, linename, …])	Serves the same purpose as `query` but returns the raw HTTP response rather than a `Table` object.

Attributes Documentation

TIMEOUT = 30¶

URL = 'http://physics.nist.gov/cgi-bin/ASD/lines1.pl'¶

energy_level_code = {'EV': 1, 'R': 2, 'Rydberg': 2, 'cm': 0, 'cm-1': 0, 'eV': 1, 'electronvolt': 1, 'ev': 1, 'invcm': 0, 'rydberg': 2}¶

order_out_code = {'multiplet': 1, 'wavelength': 0}¶

unit_code = {'Angstrom': 0, 'nm': 1, 'um': 2}¶

wavelength_unit_code = {'vac+air': 4, 'vacuum': 3}¶

Methods Documentation

query(*args, **kwargs)¶

Queries the service and returns a table object.

Serves the same purpose as query but returns the raw HTTP response rather than a Table object.

Parameters:

minwav : astropy.units.Quantity object

The lower wavelength for the spectrum in appropriate units.

maxwav : astropy.units.Quantity object

The upper wavelength for the spectrum in appropriate units.

linename : str, optional

The spectrum to fetch. Defaults to “H I”

energy_level_unit : str, optional

The energy level units must be one of the following: ‘R’, ‘Rydberg’, ‘rydberg’, ‘cm’, ‘cm-1’, ‘EV’, ‘eV’, ‘electronvolt’, ‘ev’, ‘invcm’ Defaults to ‘eV’.

output_order : str, optional

Decide ordering of output. Must be one of following: [‘wavelength’, ‘multiplet’]. Defaults to ‘wavelength’.

wavelength_type : str, optional

Must be one of ‘vacuum’ or ‘vac+air’. Defaults to ‘vacuum’.

get_query_payload : bool, optional

If true then returns the dictionary of query parameters, posted to remote server. Defaults to False.

Returns:

table : A Table object.

query_async(minwav, maxwav, linename='H I', energy_level_unit='eV', output_order='wavelength', wavelength_type='vacuum', get_query_payload=False)[source]¶