At some point the sensor noise swamps any signal, given your setup and processin... | Hacker News

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crazygringo on Oct 24, 2020 | parent | context | favorite | on: 2.5 Gigapixel Image of the Orion Constellation Too...

At some point the sensor noise swamps any signal, given your setup and processing.

So from a philosophical view every pixel holds a galaxy, but from a practical point of view sensor noise obliterates it.

I think it's reasonable to call the area in between visible stars "black" when received light is below the noise floor.

geon on Oct 25, 2020 [–]

I’m guessing that it is difficult to distinguish the “noise” of sub pixel galaxies from the thermal noise of the sensor.

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