Earth and moon eclipse

examples/scenes/lunar-eclipse.toml

@@ -0,0 +1,19 @@
+# The total lunar eclipse of 2025 March 14 at mid-totality (06:58:44 UTC), seen through
+# a 400 mm lens from 7000 km out on the line from Earth's center to the Moon. Needs the
+# astrokit feature and its kernels.
+#
+#   resolved render --scene examples/scenes/lunar-eclipse.toml --lighting L1 --preview lunar.png
+#
+# At lighting L1 the Moon is inside Earth's shadow and dark. At L0 it is drawn without
+# Earth's shadow, as a full Moon. Earth's atmosphere bends red light into the shadow
+# and a real eclipsed Moon glows a dim red; that comes with the atmosphere (M4).
+
+epoch = "2025-03-14T06:58:44 UTC"
+
+[camera]
+focal_length = 0.4
+
+[observer]
+position = [-6956600.88, 697838.87, 344565.04]
+look_at = [-399016819.56, 40026652.30, 19763566.70]
+up = [0, 0, 1]