Hi all, thought I'd just let all you beginners out there know that you don't need to get fancy expensive equipment to take nice shots. Last night I placed a stock Canon 550d (nearly 10 years old) with it's 55-250mm zoom kit lens on a tripod with ball head on a Sightron Nano Tracker. I reckon you could probably buy the whole setup second hand for under $600, less if you already have a camera and lens. All you need is a little knowledge on how to polar align the tracker, some processing skills using mostly freeware programs downloaded from the Net and a program like Photoshop to make adjustments to your final image. The 30 second subs I took for this were shot at 3200 iso and I only took 40 of them. They were taken from an outer Melbourne suburb in Bortle 6 skies.
The low resolution image here doesn't do justice to the end result but viewed at full resolution on a large screen it looks great.