Surgelle: Opposition Surge Full Moon
Cosmology & the Sky arc, page 168 of 193. Back to The Pixelated Physics Universe
Who they are
Surgelle has one line, and says it often: “Full moon. opposition surge. no dark time.”
Surgelle is a character of the Cosmology & the Sky arc: drawn in pixels, ruled by one piece of real physics, and never allowed to break it.
The physics
Opposition surge: the Moon brightens sharply near zero phase angle (full moon).
$$ \begin{gathered} B(g) = \frac{B_0}{1 + \tan(g/2)/h} \end{gathered} $$
| Symbol | Meaning | SI unit |
|---|---|---|
| $B(g)$ | opposition (shadow-hiding) enhancement | — |
| $B_0$ | amplitude of the surge | — |
| $g$ | phase angle | — |
| $h$ | angular-width parameter | — |
Sources
Crossovers
Surgelle meets Magnidra (Magnitude Scale). Surgelle's full Moon brightens sharply near zero phase angle. Magnidra records that jump in magnitudes, the scale where brighter means smaller.
Surgelle meets Backglowen (CCD Sky Background Noise). Surgelle's full Moon floods the sky with scattered light. Backglowen's sky-limited noise rises with it, so faint-object work waits for dark time.
Wear the lore
Concept keywords: Opposition Surge Full Moon, Surgelle, Cosmology & the Sky, physics lore, Pixelated Physics