SkySurvey

class whampy.SkySurvey(filename=None, mode='local', idl_var=None, file_list=None, extension=None, max_raw_vel=False, from_table=None, tuner_list=None, unreduced_list=None, input_data_R=False, survey='mw_ha', **kwargs)

Bases: SkySurveyMixin, Table

Core WHAM SkySurvey CLass

Load, view, manipulate, and plot basic results from WHAM Sky Survey

Parameters:

filename: ‘str’, optional, must be keyword

filename of WHAM survey fits file Defaults to URL can also be idl sav file

mode: ‘str’, optional, must be keyword

can be “local” or “remote” to signify using local file or remote access

idl_var: ‘str’, optional, must be keyword

if provided, points to name of IDL structure in sav file containing relevant data by default, will take the first variable that is a numpy.recarray

file_list: ‘str’, ‘listlike’, optional, must be keyword

if provided, reads combo fits files directly

extension: ‘str’, optional, must be keyword

extension to load from fits file default to “ATMSUB”

max_raw_vel: ‘bool’, optional, must be keyword

if True, returns max RAWSPEC velocity

from_table: `astropy.table.Table`, `dictionary`, optional, must be keyword

if provided, initializes directly from a Table

tuner_list: ‘str’, ‘listlike’, optional, must be keyword

if provided, reads tuner spectra fits files directly

unreduced_list: `str`, `listtlike`, optional, must be keyword

if provided, reads unreduced data (RAW/PROC SPEC)

input_data_R: `bool`, optional, must be keyword

if True, assumed input data unit is Rayleighs

survey: ‘str’, optional, must be keyword

specifies which WHAM survey data to load options are

“mw_ha”:Milky Way Sky Survey of H-Alpha “mw_sii”:Milky Way [SII] Survey (preliminary) “lmc_ha”:Large Magellanic Cloud H-Alpha Survey (Smart et al. 2023) “smc_ha”:Small Magellanic Cloud H-Alpha Survey (Smart et al. 2019)

Methods Summary

sky_section(bounds[, radius, wrap_at_180])

Extract a sub section of the survey from the sky

Methods Documentation

sky_section(bounds, radius=None, wrap_at_180=True)

Extract a sub section of the survey from the sky

Parameters:

bounds: `list` or `Quantity` or `SkyCoord`

if list or Quantity must be formatted as:

[min Galactic Longitude, max Galactic Longitude, min Galactic Latitude, max Galactic Latitude] or [center Galactic Longitude, center Galactic Latitude] and requires radius keyword to be set default units of u.deg are assumed

if `SkyCoord’, must be length 4 or length 1 or length 2

length 4 specifies 4 corners of rectangular shape length 1 specifies center of circular region and requires radius keyword to be set length 2 specifies two corners of rectangular region

radius: ‘number’ or ‘Quantity’, optional, must be keyword

sets radius of circular region

wrap_at_180: `bool`, optional, must be keyword

if True, wraps longitude angles at 180d use if mapping accross Galactic Center