Settings
Red light / night vision mode
Shifts the whole interface to deep red so your dark adaptation survives checking the plan at the eyepiece.
Show objects as seen visually
Off shows the long-exposure photographic version instead — useful for identification, misleading for expectations.
Data & privacy
Your sites, equipment and preferences are stored locally in this browser. Positional astronomy is computed on your device with astronomy-engine — nothing about where you observe leaves the page.