---
title: "Offline & Vacation Mode"
description: "Remote observatories lose internet; vacations happen. Offline Mode lets the rig keep imaging autonomously from its local cache – and keeps the books straight while disconnected. [![](https://astro-pm.com/wp-content/uploads/2026/07/Screenshot-2026-07-12-133524.png)](https://astro-pm.com/wp-content/uploads/2026/07/Screenshot-2026-07-12-133524.png) ### The Target Cache Every successful cloud fetch is cached on the NINA…"
url: "https://astro-pm.com/docs/offline-vacation-mode/"
updated: "2026-07-12"
category: Astro PM NINA Guide
---

# Offline & Vacation Mode

Remote observatories lose internet; vacations happen. Offline Mode lets the rig keep imaging autonomously from its local cache – and keeps the books straight while disconnected.

     [![](https://astro-pm.com/wp-content/uploads/2026/07/Screenshot-2026-07-12-133524.png)](https://astro-pm.com/wp-content/uploads/2026/07/Screenshot-2026-07-12-133524.png)

### The Target Cache

Every successful cloud fetch is cached on the NINA machine. When the cloud is unreachable – or Offline Mode is switched on deliberately – the plugin schedules from the cache instead, with a banner showing the cache’s age. Even the Options target browser works offline.

### Progress Counting Offline

With Offline Mode on, each captured light is counted against the **local cache** – so the next night’s schedule sees the reduced remaining work and multi-night accuracy is preserved without the cloud. When connectivity returns, normal cloud sync resumes.

### When to Use It

- **Deliberately** – flying somewhere while the observatory runs? Prime the cache (one online schedule build), enable Offline Mode, and the rig is self-sufficient.
- **Automatically** – even without the toggle, a failed cloud fetch falls back to the cache on its own; the toggle just removes the online attempt entirely.

   **Tip:** Make any last project changes in the desktop app BEFORE going offline – the cache snapshot is what the rig will follow until it reconnects.