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Brightness in top left of frame, any clues as to what might be causing this?
Ok, so first up please ignore the photo quality itself, and apologies if this is way too basic to be posting. I'm fairly astounded by the quality of the photos in the 'Beginners Astrophotography' forum, and feel a little out of place, but I have nowhere else to ask so sorry!
I had most settings completely wrong when I took it hence the shocking quality. What I am wondering is what might be causing the bright area in the top left corner of the image?
I'm keen to see what I can squeeze out of my Canon S5 in the way of wide field, time lapse, star trails, barn door, etc. The maximum exposure on the camera is 15 seconds, however I have loaded CHDK onto it which opens up long exposures, intervalometer, etc.
I took this photo during last weeks Aurora, I hastily set the camera up and just left it continuous shooting 50 second exposures. Every frame looks like this, with the blown out area in the top left. I've since tried this at home and I get this whenever I shoot in CHDK mode, if I shoot 15 second exposures with the default firmware I don't see it. One other thing is I have the cameras noise reduction turned off in CHDK, could it be this?
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