Quickstart

Two ways to launch

Explore Mode — view existing SAGE26 results using a full path to your .par file:

sage-viewer --par /path/to/SAGE26/input/millennium.par

Launch Mode (wizard) — configure and run SAGE26. Run from your SAGE26 root so the wizard can find your .par files and executable automatically:

cd /path/to/SAGE26
sage-viewer

Explore Mode examples

miniMillennium

Open the printed URL (default http://localhost:8080) in any browser.

Launch on microUchuu

sage-viewer --par input/microuchuu.par --snap 49

Common options

# Start at a specific snapshot
sage-viewer --par input/millennium.par --snap 32

# Use a specific port
sage-viewer --par input/millennium.par --port 8888

# Limit haloes per snapshot (faster on slower machines)
sage-viewer --par input/millennium.par --max-halos 20000

# Use all CPUs for loading
sage-viewer --par input/millennium.par --n-jobs -1

First steps in the viewer

1. The scene loads at the requested snapshot (default: z=0, snap 63).
2. Use the timeline slider in the toolbar to jump to any snapshot.
3. Press ▶ Play to animate through cosmic time.
4. Toggle Dark Matter Haloes or Galaxies off in the Structure tab (right panel).
5. Change Colour by to ssfr to highlight star-forming galaxies.
6. In the Target tab, enter a halo index and press Go to fly there.
7. Double-click any point in the scene to select the nearest galaxy and see its properties in the info bar.