laspec
Modules for basic operations on LAMOST spectra, etc.
If you make use of this package in your research, please cite the paper below:
author
Bo Zhang, bozhang@nao.cas.cn
home page
install
- for the latest stable version:
pip install -U laspec - for the latest github version:
pip install -U git+git://github.com/hypergravity/laspec
module structure
- binning
module for rebinning spectra- rebin(wave, flux, flux_err, mask): rebin spectra
- ccf
module for cross correlation function- sine_bell: a sine bell function
- wxcorr: weigted cross-correlation
- wxcorr_cost: negative CCF function
- wxcorr_spec: weigted cross-correlation of two spectra
- wxcorr_rvgrid: weighted cross correlation given an RV grid
- wxcorr_cost_binary: negative CCF function
- wxcorr_spec_binary: weigted cross-correlation of two spectra
- wxcorr_rvgrid_binary: weighted cross correlation given an RV grid
- RVM Radial Velocity Machine
- measure: measure the RV of single stars
- measure_binary: measure the RV of binary systems
- convolution
module for spectral Gaussian convolution- conv_spec: capable to tackle arbitrary R_hi and R_lo but relatively slow
- interpolation
interpolation, but slow, please do not use.- Interp1q: use numpy.interp instead
- lamost
module for LAMOST spectra and files- lamost_filepath(planid, mjd, spid, fiberid)
- lamost_filepath_med(planid, mjd, spid, fiberid)
- sdss_filepath(plate, mjd, fiberid)
- mrs
MRS module- MrsSpec: MRS spectrum (B / R)
- MrsEpoch: MRS epoch spectrum (B + R)
- MrsFits(astropy.io.fits.HDUList): MRS fits reader
- MrsSource(numpy.ndarray): MRS source constructor
- line_indices
module to measure spectral line index (EW)- measure_line_index: measure line index (EW)
- normalization
module to normalize spectra- normalize_spectrum_spline: a Python version of Chao's method (recommended)
- normalize_spectrum_poly: polynomial normalization
- normalize_spectrum_general： a unified wrapper of spline and poly
- NOTE: bad pixels (e.g., cosmic rays) should be properly removed before normallization
- qconv
quick convolution, designed for two cases:- conv_spec_Gaussian(wave, flux, R_hi=3e5, R_lo=2000): scalar resolution to scalar resolution instrumental broadening
- conv_spec_Rotation(wave, flux, vsini=100., epsilon=0.6): stellar rotation broadening
- read_spectrum
module to read LAMOST/SDSS spectra- read_spectrum(fp): read LAMOST low-res spectra
- read_lamostms(fp): read LAMOST medium-res spcetra
- spec
modules for operations on general spectra (deprecated)- Spec: spec class
- wavelength
module to convert wavelength between air and vacuum- wave_log10: log10 wavelength grid
- vac2air: convert wavelength from vacuum to air
- air2vac: convert wavelength from air to vacuum
acknowledgements
...
1 maintainer
Release files for laspec 2020.913.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| laspec-2020.913.0-py3-none-any.whl | Python 3 | none | any | Details |
Release files / laspec-2020.913.0-py3-none-any.whl
| Download URL | laspec-2020.913.0-py3-none-any.whl |
|---|---|
| Size | 22.5 MB |
| Tags | Python 3 |
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