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Spectral Reduction, Spectroscopy - Coggle Diagram
Spectral Reduction
Considerations for Real Observations
Atmospheric Dispersion Corrector
Slit Height and Position of Source
Guiding for Locating Slit
Binning
Stable Calibration
Extraction
Remove the Background
Reject Cosmic Rays
Trace the Orders
Optimal Extraction
Calibration & Reduction
Usual Reduction: Bias, Dark; Unusual Reduction: Flat with Chromatic Effect
Background Subtraction: Scattered Light Removal & Sky Subtraction
Calibration
Wavelength Calibration
Absorption Cell
Emission Lamp
Flux Calibration
Hot Stars
Compact Planetary Nebulae
Spectroscopy
Characteristics of Spectral Lines
FWHM & Profile
Line Broadening
Thermal (Hot & Fast Rotating)
Pressue (Gravity)
Instrumental Resolution
Natural (Quantum, Uncertainty Principle)
Flux
Emission
Absorption
EW (Equivalent Width)
Positvely Correlated with Column Density
Spectral Normalization: Removing the Cotinuum & Blaze
Estimate and Remove the Blaze Function
Redshift
Precise Radial Velocity