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Hi guys, so I finally got my HEQ5 PRO mount to track correctly and I decided to take a bunch of photos of the Orion Nebula(or at least part of it). I took as many photo's as I could with my Canon 1000D DSLR connected up at prime focus. I used 1600 ISO (max), 400 ISO and 100 ISO all with a shutter speed of 30" I have found these red, green and blue squiggles I think are called 'hot pixels' in all of my photo's after I've used DeepSkyStacker to merge them. They may be hard to see on here but in Photoshop they are everywhere Could someone please explain to me what is causing this and what can I do to avoid it in the future please. I feel like I've ruined a perfect night out! Or maybe there is a way to fix this? I was using a Skywatcher 200p for these. ISO 1600 30" ISO 400 30" ISO 100 30" Thanks, guys!