Back to Light and Stellar SpectroscopyLesson 13 of 30
VVASTWARD

C01

Light and Stellar SpectroscopyModule 3Instruments and Calibration
Module 3 / Lesson 13 of 3035 min
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What Does Spectral Resolution Mean?

When can an instrument separate two nearby spectral features?

Use R = λ/Δλ to turn a vague idea of detail into a measurable wavelength limit.

An optical spectrograph compares a blended pair of spectral lines with a clearly separated pair.
Vastward artistic reconstruction of two nearby wavelengths changing from one blended feature into two measurable lines.

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