Requirements: Blender 4.2 LTS or newer. Scene generation and Cycles renders tested on 4.2 and 5.0.1. EEVEE has not been tested. Uses numpy, which is bundled with Blender. 8 GB RAM recommended.

Quick start (no scripting):

1. Unzip the download.
2. Open the .blend of the system you want (Kepler186_MHDINT.blend, Kepler62_MHDINT.blend or Kepler442_MHDINT.blend).
3. Press F12 to render the current frame, or Ctrl+F12 to render the animation.

Change the camera: go to the Scripting tab (the script is already open inside the .blend), set ONLY_SWITCH_CAMERA = "f" and press Alt+P. This does not rebuild the scene: it switches the camera and shows the objects that belong to that view. Camera keys: general, inner, top and one key per planet letter (Kepler-186 and Kepler-62: b, c, d, e, f; Kepler-442: general, top and b only).

Rebuild with your own settings:

1. In the Scripting tab, edit the settings at the top of kepler186_v1.0.py (or kepler62_v1.0.py, kepler442_v1.0.py). The main ones: the duration and speed of the animation, TRUE_SCALE, lighting, RESOLUTION (all with comments in the file).
2. Set ONLY_SWITCH_CAMERA = None and press Alt+P. The scene is rebuilt from scratch.

Read the data: select an object named MHDINT_… and open Object Properties → Custom Properties. Values carry their source and say whether they are measured, computed or illustrative.

Performance: each system rebuilds in a few seconds. At the default 1920×1080 and 128 samples a Cycles frame takes several minutes on a CPU and much less on a GPU; lower the samples for quick drafts.