Requirements: version 4.2 LTS or newer. Scene generation and Cycles renders tested on 4.2 and 5.0.1. EEVEE has not been tested. 4 GB RAM minimum, 8 GB recommended. A Cycles render at 1600×800 takes about 1–2 minutes on a laptop CPU.

Quick start (no scripting):

1. Unzip the download.
2. Open TRAPPIST1_MHDINT.blend.
3. Press F12 to render the current frame, or Ctrl+F12 to render the animation.

Change the camera:In the Outliner, select any camera named MHDINT_Cam_… (Full_System, Mid_Planets, Inner, Top, or b to h), then press Ctrl+Numpad 0 to make it the active camera.

Rebuild with your own settings:

1. Go to the Scripting workspace and open trappist1_v1.0.py.
2. Edit the settings at the top of the file. The main ones:
3. DURATION_DAYS, DAYS_PER_SECOND, FPS: length and speed of the animation.
4. LIGHTING: "studio" or "physical".
5. TRUE_SCALE: True for real proportions.
6. SHOW_HABITABLE_ZONE, SHOW_ORBITS, SHOW_LABELS, COMPOSITOR_GLARE: turn elements on or off.
7. ACTIVE_CAMERA: general, mid, inner, top, or a planet letter b to h.
8. RESOLUTION: output size.
9. Press Alt+P (Run Script). The scene is rebuilt in about one second.
10. To switch camera without rebuilding, set ONLY_SWITCH_CAMERA = "e" (any key above) and press Alt+P.

Read the data:Select a planet (MHDINT_TRAPPIST1_b … _h) and open Object Properties → Custom Properties. You will find period, distance, mass, radius, density, insolation, equilibrium temperature, habitable-zone status, uncertainties and sources.