Astronomy
Transit Light Curve
F = 1 − δ·e^(−(t−t₀)²/w)
When a planet crosses its star's disk the measured brightness dips by a fraction equal to the area ratio of the two disks, tracing a shallow well in the light curve.
Computed & rendered in pure C# on the frozen OnlyCSharp 1.8 library — animation baked to GIF with the library's own
Gif encoder (no GPU, no ffmpeg, no external packages).