INTRODUCTION
This is a tutorial explaining how to install an operating system and software into a micro SD card to use in a Raspberry Pi 3B or Raspberry Pi 3B+ for astro imaging and control of the relevant hardware. The software to capture images, control camera cooling and other things such as the mount etc. is called INDI and provides a set of drivers to control all the hardware.The Raspberry Pi will run in what is called "headless" mode - meaning that no human interfaces are directly connected to the RPi - instead the RPi is connected to the local area network (LAN) using either Ethernet (preferred for speed and reliability) or WiFi. Everything is then controlled from indoors on a computer also connected to the LAN. This computer is called a "client" and the Raspberry Pi a "server".
This tutorial will detail all the steps involved in installing the operating system and software - there are rather a lot of them, hence the need for a tutorial but there is a script that is downloaded that does all the difficult stuff. I believe that anyone with some knowledge of computers should be capable of following these steps and setting up a working Linux based astro imaging system. The Raspberry Pi can be put on the pier (or tripod) or even directly on the telescope mounting and would replace a laptop for instance, reducing the use of long cables etc.
The operating system used is Ubuntu Mate and involves using a monitor, keyboard and mouse (or trackball) in order to set up the operating system and enable remote control before the RPi can be used headless in the observatory or on a tripod. The Raspberry Pi is a "proper" computer though a bit slower and with less storage space that a desktop or laptop (called a Single Board Computer). When powered up the operating system goes into a setup routine and you just have to answer the questions, same as when setting up any computer. Near the beginning there's an opportunity to set up WiFi so you'll need your WiFi password if you want to use WiFi. This section can be skipped if using Ethernet cable rather than WiFi.
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