Astronomy Observation Chair

As the nights get longer at my latitude (North West England) thoughts can now go back to observing the universe. Last year my wife bought me a brilliant present of a 8" reflecting telescope for a significant birthday.
I have been using it whenever there were clear skies last year and during the winter of this year.
One of the problems I found though was I just couldn't find a chair that was comfortable enough to cope with the varying angles possible with the telescope. When it was pointing upwards I had to stand, when it was pointing at around 45 degrees I had difficulty sitting or standing. When it was a low angles I just couldn't get a chair or stool down low enough.

I saw an article in last August's (2012) Sky At Night Magazine about building a suitable chair. Unfortunately the iPad version of the magazine didn't contain the plans. Undeterred I decided to google it. I mean everything is on the internet - right?