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The blooming is a pet. I'm not using a low end webcam but the same chip as in a sbig ST7. The antiblooming version is nowhere as sensitive. THe problem is saturated stars with short exposures. This makes it difficult to image associated nebulosity etc. My setup will saturate a mag ~3 star in less than 1 sec so the 15 secs for eta carina certainly starts to bloom.
I don't think a digital SLR would help except that it isn't as sensitive.
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