Nikon D750 for Astrophotography

Started Dec 11, 2018 | Questions thread
sharkmelley
sharkmelley Senior Member • Posts: 2,705
Re: Nikon D750 for Astrophotography
2

DMcGarvey wrote:

For example, here is a 10 minute dark frame shot at ISO 1600 and taken at room temperature. Even after a massive curves stretch (as shown) only a small amount of noise is present, and it has no pattern, banding, or amp glow. This means the sensor is handling dark current noise as it's occurring.

No, it means the Nikon D750 is using spatial filtering on the raw data to reduce the noise. It's the same spatial filtering that turns small tightly-focused stars magenta/purple on the Nikon D750, as discussed earlier in this thread.

Mark

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