Home▸Space & Astronomy▸Echelle Spectrograph Lab (2D): Grating Orders, Stellar Absorption Lines and Radial Velocity

🌈 Echelle Spectrograph Lab (2D): Grating Orders, Stellar Absorption Lines and Radial Velocity

A 2D echelle spectrograph lab: grating equation, blaze and free spectral range, slit-, grating- and pixel-limited resolving power, a CCD echellogram of a star with 25 absorption lines and a Doppler radial-velocity fit, with six numerical checks.

Space & Astronomy2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

⚙ Under the hood

echelle spectrographdiffraction gratingradial velocityabsorption linesresolving powerastronomy instrumentsDoppler

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install