DIY. An Astro Tracker in Two Nights
After reading an article about amateur astronomy, I decided to take pictures of stars with the help of a common camera using no telescope. In the mentioned article I learnt about Astro Trackers. An Astro Tracker is a device that is used to compensate rotation of the sky of stars in long-exposures. Googling for a while, I found out that it’s no problem to buy them, but the price was a bit high.