Shooting star trails with a Canon 20D wasn’t working. I got the images below using that camera and it took a lot of tweaking with Photoshop plug-ins to get them to look halfway decent. Today, however, with full-frame cameras or APS-C models like the Canon 70D I’m using it’s an entirely different story. There is not only a vast improvement in the amount of noise present in my files, but the camera has a robust buffer that will load a ton of shots onto your card without breaks of three or four minutes. That was my problem with shot #2. I took 14 frames of ten minutes each. Somewhere in that process the camera slowed down and loaded files onto the card, which broke up the continuity of the star trails. What I had were trails-with-gaps. Using the freeware called Startrails I was able to clean up the gaps a bit and obtain a more pleasing image.