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Introducing: ScopeHunter

This is something I was busy with the last couple of months: ScopeHunter. It’s a internet search engine for optical instruments. It checks quite an amount of auction-…

Sunspot AR2014 on a sunny Dutch morning

Spring really hit the lowlands today. In a t-shirt, 18 degrees Celcius with my trusty Celestron C6 and a DIY solarfilter. Image shows sunspots AR2014, AR2016 and a…

Astronomy YouTube channels worth checking

The years when YouTube was only a place where you could only find videos from kittens and fail videos containing people with skate boards crashing into fences are…

Making a cheap dew controller using a LED dimmer

After short circuiting a 12 Volt hair dryer which I used for dew prevention at a starparty a few months ago, I thought it was time to get…

Remote control your GoTo telescope mount using a Raspberry Pi and SkySafari

SkySafari is a great astronomy app for smart devices like the iPhone, iPad and Android. The SkySafari Plus and Pro versions add the possibility to remote control your…

Light pollution Cinema

I admit, looking at images made by the ISS crew or time lapse movies made by orbiting satellites of our planet at night can be quite beautiful and…

Lichtvervuiling in Utrecht

Sorry, this post is in Dutch. Afgelopen week ben ik een avondje op stap geweest met Stefan Speelberg, 2e jaars student aan de Hogeschool voor Journalistiek. Zijn opdracht…

Using the Raspberry Pi for camera surveillance using Motion and cloud storage

February, 16th 2014 A fully updated post using BoxFS2 with oauth2 authentication. The previous version of this post used an old version of BoxFS which is now obsolete…

The Registax 6 initialize error

In my previous post I wrote about using the Philips webcams with the Linux 3.0 kernel and problems which might occur. Last week I had to opportunity to…

Philips webcams and the Linux 3.x kernel

The Philips SPC900 and ToU Cam Pro II webcams are still very popular by amateur astronomers who want to try out some basic planetary astrophotography. I happen to…