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What is the optimal ISO setting for my camera, deep space imaging
Hi anyone, just getting started with Asrophotography. I am curious to know what the optimal ISO setting is for my DSLR Canon 400D for deep space imaging, i want to minimise the exposure/tracking time but I dont want the images to be too grainy either, my cameria is currently set at 1600 ISO.
Basic Setup: Meade LX90 8" with wedge, Canon 400D, off-axis guider, Hirsch Foal 6.3 Focal reducer (which i have not tried out yet)
best
Alex
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