Please enable JavaScript.
Coggle requires JavaScript to display documents.
spectral reduction & spectroscopy - Coggle Diagram
spectral reduction & spectroscopy
Spectral Reduction
Extraction
Trace the oders
Remove the “background”
Reject cosmic rays
Collapse or Optimal extraction
Flux and Wavelength calibration
extinction
correction
flux standards:
compact planetary nebulae
hot stars
A, B, white dwarf
Calibration and reduction
Special Flats and Standards
Narrow flats
Telluric standards
Wavelength calibration frames
Background Subtraction
scattered light
sky
Considerations for real observations
slit height, position of star
binning
ADC, atmospheric dispersion corrector
stable between wavelength calibration and science and standards
guiding
Spectroscopy
Redshift and radial velocity
Line profile, line flux, etc.
line
broad lines:
H Paschen from a A star
(hot and fast rotating)
narrow lines:
tellurics (ISM, IGM)
Spectral normalization
Removing the cotinuum & blaze
Characteristics of Spectral Lines
FWHM
Profile
Flux
EW
EW and abundance analysis