Thanks guys I've found loads of information and interesting stuff on here, and plenty of inspiration to go outside and look up too.
I just realised when I looked at my pictures that I hadn't reset my workflow so I had exported those pictures in super low quality because I'd just finished processing the thumbnails from a photoshoot. I hate it when that happens.
Anyway, back on topic I was amazed at what this little lens is capable of, I pointed it at Alpha Centauri and somehow managed to snap a reasonably clear shot of the binary system. It's not very big, and it's cropped pretty drastically but I'm quite proud of my $150 lens. I had to shoot it at 1/1000, F/16, ISO6400 because I haven't saved up enough to buy a tracking mount but I reckon that's not a bad effort.
http://i735.photobucket.com/albums/w...S/IMG_9142.jpg