44°08′ N · 076°30′ W  ·  HALE PARK  ·  EST. 1926

LUMENPLANETARIUM

One hundred years of the same ceiling.
The centennial season opens 12 September.

Centennial season Become a member

I  ·  FIRST LIGHT  ·  12 MARCH 1926

Opening night begins, as always, with Orion.

On the evening of 12 March 1926, chief operator Edda Lang dimmed four hundred house lamps, brought the projector up to speed by hand, and gave the city back a sky it had already paved over. The first figure to reach the plaster was Orion — shoulders first, then the belt, then the sword.

Every opening night for a hundred years has started the same way. The audience changes. He doesn't.

Nights the dome has opened
26,712
Projectors, total, ever
4
Stars on the ceiling tonight
4,572
Ceilings
1

II  ·  ONE HUNDRED ORBITS

A century, ring by ring.

Each ring is a decade. Read from the centre out — 1926 at the core, tonight at the rim.

  1. 1926First light. Orion, a hand-cranked lamp, 412 wooden seats.
  2. 1937The Zeiss Model II arrives by sea in eleven crates. One lens broken; its replacement comes by post.
  3. 1948School matinées begin. Admission: ten cents, plus one question for the operator.
  4. 1957Sputnik week. The queue wraps Hale Park twice; shows run until two in the morning.
  5. 196920 July. The landing, relayed by radio beneath a projected Sea of Tranquility.
  6. 1986Halley's comet disappoints the sky. The dome fills anyway — four shows a night.
  7. 2003The Zeiss retires from daily duty after 66 years; 2,400 signatures on its crate. Restored, it keeps Sundays.
  8. 2011Full-dome laser projection arrives. The plaster is repainted the same off-white it was in 1926.
  9. 2020A closed year. The operator reads the night sky over local radio — 214 broadcasts, nightly at nine.
  10. 2026The centennial season opens 12 September. Same ceiling, next century.
fig. 1 — the century, to scale · one ring = ten years

III  ·  THE CENTENNIAL SEASON  ·  SEP 2026 — JAN 2027

Six shows, plotted like objects.

Date along the bottom, hour of night up the side — read it the way the operators chart a rising planet.

Nº1 · 20h00 Nº2 · 19h30 Nº3 · 22h30 Nº4 · 17h00 Nº5 · 21h00 Nº6 · 23h00
fig. 2 — season chart · date × hour of night, plotted RA/Dec-fashion
  1. Nº 1

    First Light, Restaged

    Sat 12 Sep · 20h00 · the restored Zeiss

    The 1926 opening program run note-for-note from Edda Lang's cue sheets, on the 1937 Zeiss — hand cues, house lamps, the original eleven-minute silence included.

  2. Nº 2

    Star-Stuff

    Fri 2 Oct · 19h30 · full dome

    Where your iron came from. Nucleosynthesis traced from hydrogen to the calcium in your teeth, ending on the only slide that matters: a mirror.

  3. Nº 3

    Dark Adaptation

    Sat 24 Oct · 22h30 · no narration

    Forty minutes, no voice, no music. The lamps go from city-bright to moonless-dark over half an hour, and 4,572 stars arrive in the order your eyes can earn them.

  4. Nº 4

    The Quiet Sun

    Sun 8 Nov · 17h00 · matinée

    Our own star at the flat bottom of its cycle — granulation, the long minimum, and why a boring sun is the best kind to live beside.

  5. Nº 5

    Naked-Eye Winter

    Sat 5 Dec · 21h00 · dress warmly, it ends outside

    The winter sky with no instrument but patience: finding the ecliptic, holding the Pleiades sideways, and walking out of the dome able to do it again alone.

  6. Nº 6

    One Hundred Orbits

    Thu 31 Dec · 23h00 · the centennial crossing

    The year turns over under the dome. A century of cue sheets in sixty minutes, and at midnight the ceiling shows the sky of 12 March 1926 — then tonight's, for comparison.

IV  ·  PROVENANCE

The dome shows you your own provenance.

“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood were made in the interiors of collapsing stars. We are made of star-stuff.”

— Carl Sagan, 1973

It is the oldest line in our script, and the only one no operator has ever cut. Every element in you heavier than hydrogen was assembled inside a star that no longer exists. What the projector throws on the plaster is not scenery. It is ancestry.

Sung properly in Nº 2 · Star-Stuff, 2 October.

V  ·  MEMBERSHIP BY STELLAR CLASS

Pick a class. Keep the lamp lit.

Members funded the 2003 restoration and every ten-cent matinée since 1948. Classes follow the stars: cooler burns longer, hotter carries further.

School matinées have cost ten cents since 1948. Members are why.

VI  ·  THE DOME ITSELF

Arrive twenty minutes early. The dark needs the time more than we do.

Dark adaptation is part of the show: your eyes take about twenty minutes to open all the way, so the foyer lights step down while you wait. By the time you're seated, the ceiling can afford to whisper.

ADDRESS
7 Observatory Walk, Hale Park
HOURS
Wed–Sun · doors 17h00 · last seating 22h30
DOME
18.3 m plaster · 212 reclined seats
PROJECTORS
Zeiss Model II (1937, restored 2003, runs Sundays) · full-dome laser (2011)