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Tutorial:
Camera time efficiency simulation


Content:

  1. Introduction
  2. Why I like these cameras
  3. The Excel sheet with camera simulations: Low Dynamic, example 1
  4. High Dynamic, example 2
  5. Thermal Noise, example 3
  6. High Dynamic and very weak signal, example 4
  7. Readout Noise from calibration, example 5
  8. Download of Excel sheet

4: High Dynamic, example 2

Here I have changed one parameter, the maximum incoming photon flow that I don't want to saturate, now 1000 photons per pixel and second:

Camera time efficiency, example 2

Compare these values with Example 1 above, see Step 3: the S/N ratio of sub images and step 6: how many minutes it took to do the sequence.

If you have a camera with mechanical shutter you shouldn't do many short exposure photos, it has a limited lifetime and will broke. You must have a camera with electronic shutter. The ZWO has USB3 ports, that can give very high speeds and can reduce the dead time a lot but it also heat the camera.

Which camera is best? I will say all of them are very good, but it depends very much of what you will do and what telescope and environment you have.

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