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When light goes astray, part 2 | Astronomy.com
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When light goes astray, part 2

Astroimager Adam Block offers a solution for dealing with scattered light in a celestial image.
RELATED TOPICS: ASTROIMAGING
AdamBlock_2013
Last month, I presented frightening examples of scattered light — literal ghost images! This time we look at another scary picture and conquer our fear by completely fixing the issue.

Image #1 shows an inverted, high-contrast image of NGC 2903 (a beautiful galaxy in Leo) with a band of light stretching across the field. I chose to display an inverted version to make certain the light comes across in print. But even normally displayed on a monitor, the glow is apparent and unwelcome.

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