Modules for basic operations on LAMOST spectra, etc.
Bo Zhang, [email protected]
- for the latest stable version:
pip install -U laspec - for the latest github version:
pip install -U git+git://github.com/hypergravity/laspec
- binning
module for rebinning spectra- rebin(wave, flux, flux_err, mask): rebin spectra
- ccf
module for cross correlation function- xcorr_rvgrid: cross-correlation given an RV grid
- xcorr: standard cross-correlation
- sine_bell: a sine bell function
- 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)
- line_indices
module to measure spectral line index (EW)- measure_line_index: measure line index (EW)
- normalization
module to normalize spectra- normalize_spectrum: a Python version of Chao's method
- normalize_spectrum_iter: iterative normalization (recommended)
- 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
...