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A comment on When Hubble stared at nothing for 100 hours (2015). Parent comment

Re:When Hubble stared at nothing for 100 hours (2015) by ISL on Friday July 24, 2020 @12:36PM (#23941516)
I'm sure they did start stacking as soon as they got the images. From a statistical perspective, 100 hr is roughly 3x better than 10 hr.
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