OneSpec
Overview
Generally, the ultimate PypeIt spectrum output is a single spectrum per source, fully calibrated and (as desired) with a Telluric correction performed.
The standard way to generate this file is with the pypeit_coadd_1dspec script script.
The naming of this file is user-generated, i.e. it can be anything you wish.
The header of the primary extension includes the core_meta of PypeIt, e.g. RA, DEC, MJD, and configuration parameters of the instrument.
Inspection
You view the spectrum using the lt_xspec script
(pypeit_show_1dspec will not work), which loads the data
and launches a GUI from the linetools package. e.g.:
lt_xspec J1217p3905_coadd.fits
Current Data Model
Internally, the spectrum for a single object is held by the
OneSpec class.
Here is its datamodel, which is written as an astropy.io.fits.BinTableHDU in the first HDU of the file.
Version 1.0.2
HDU Name |
HDU Type |
Data Type |
Description |
|---|---|---|---|
|
… |
Empty data HDU. Contains basic header information. |
|
|
… |
Single spectrum data; see |
All wavelengths are in vacuum and flux units depend on whether Fluxing was performed.