Privacy
Cookies and Local Storage
GreenHalos does not use advertising or cross-site tracking cookies. Cloudflare Web Analytics measures aggregate traffic and performance without cookies.
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Application storage
GreenHalos does not write an application cookie. It can store one bounded browser-local preference record named greenhalos.preferences.v1 for language, theme, data and motion modes, hemisphere, visible layers and catalogue-location identifiers. The record is capped at 100 saved identifiers and 131,072 serialized bytes. Your browser can also retain ordinary cache data, navigation history and a geolocation permission choice under its own controls.
Necessary delivery data
Cloudflare may use strictly necessary security and delivery mechanisms when serving or protecting the site. GreenHalos does not use those mechanisms to build a cross-site aurora-viewing profile.
Cookie-free traffic measurement
Cloudflare Web Analytics loads one integrity-protected performance beacon and reports to greenhalos.com's own /cdn-cgi/rum endpoint. It does not add an analytics cookie or browser-storage identifier. GreenHalos uses the resulting aggregate visits, page views and performance measurements to understand traffic and improve the service.
Future changes
If GreenHalos introduces non-essential storage or processing, this notice and the available privacy controls will be updated before that technology is enabled. Consent will be requested where required by applicable law.