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oh my lord that's horrible!
The histogram looks way shifted to the red end.. also when I set the black point on the levels function, the image looks horribly compressed and chunky. Might need a less-compressed version to try it on.
Does the internal NR take a 3 minute dark frame after the 3 minute exposure? You might have to take your own 3 minute dark and subtract that from the washed out one above.
The second one isn't as bad, but still it's pretty washed out. Below is the 2nd one with the levels adjusted, but again the image is horribly compressed and chunky.
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