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Cafuego - the eternal pursuit of doing less · Jun 23, 2025

Astrophotography with Mac OS X - Reprise

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Cafuego

Posted by cafuego on Monday 23 June 2025.

So, N years later, how is that going? It was going pretty well, but then there was a pandemic with lock-downs and curfews, which rather restricted access to dark skies.The obvious fix was to obtain access to dark skies, by way of a holiday house in the Wimmera.

In the mean time there were also a bunch of revolutions in astronomy, mostly to blame on open hardware. That means it is now possible to buy an off the shelf computer to control a bunch of mounts, cameras, auto-focusers, dew heaters and other gear. These are essentially raspberry pi machines with a modified operating system and (generally) a mobile app to control them.

Rather than fight software, keep laptops (and myself) out in the cold and kludge together VNC access, I got one of these machines (an asiair mini) and data acquisition is now mostly automated and not a problem. I set it up, tell it what I want, and in the morning I have images.

I do however still use open source software on Mac OS X to do my data processing. Notably I use Siril for pre-processing, stacking, stetching and noise reduction.

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