Allsky camera, Astro tools, Electronics, Software

Autonomous Allsky camera with Raspberry PI. Part 3: shooting night sky in FITS using QHY5-IIM camera

This is the third part of the Allsky cycle. Please read previous articles to get complete information about this project: Part 1. Autonomous Allsky camera with Raspberry PI: an overview. Part 2. Autonomous Allsky camera with Raspberry PI: powering and lightning protection This time I will show my utility and script for shooting the night sky and processing the images.

Allsky camera, Astro tools, Electronics

Autonomous Allsky camera with Raspberry PI. Part 1: overview.

Allsky (or weather) camera is one of the most important parts of the modern observatory. It’s important to monitor sky conditions during night observations, especially when the observatory is remote controlled or fully automatic. Different vendors provide different solutions. But all they are share the same problems: very high prices, lack of autonomy (PC is required), and lack of useful…

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Allsky camera, Electronics, Linux system development

Connecting HTU21D temperature/humidity sensor to the Raspberry PI using simple C i2c interface

Previously in my projects, I’m always used well-known DHT22 (AM2302) temperature/humidity sensors. But I found that these sensors are not very stable and subject to hung. In my case, this device is worked for about two weeks and then stops responding until the power is rebooted. This is absolutely unacceptable on some distant and autonomous devices. After some googling, I…

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Allsky camera

Connecting MLX90614 infrared thermometer to the Raspberry PI

MLX90614 is a cheap and popular infrared thermometer from Melexis. This device is made in different versions for different purposes. You can get a general-purpose version with 0.5 accuracies or for medical purposes with accuracy up to 0.2. Also, you can choose the voltage you needed: 3.3v or 5v versions are available. With MLX90614, you can distantly measure the objects’…

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