This is a 61 shot stack..... that is; 61 separate photographs all taken using the features of my Nikon D5100. Settings are ISO 250 10mm and 30 second exposure at f7.1. Each shot was taken every 35 seconds (to allow 5 seconds for data write to the memory disk).
All shots were taken in RAW and any adjustments (lens correction etc) were applied equally to each shot. The first shot was brightened to give the mountain and foreground detail.
The 61 RAWs were then exported into JPGs and added as layers in GIMP - a free and easier to use Photoshop equivalent. These layers were combined using 'Lighten Only' into one flat image which you see above.
The long trail from bottom right to mid left is an airplane as is the short rising trail bottom right. The 'flash' center right is a meteor and its lingering footprint can be seen in a second exposure above it.
Finally the blurred marks across the image are clouds.