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DIY Instruments for Amateur Space by Sandy Antunes

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Chapter 4. Fundamental Detector Types

As we will often note, there are four flavors or types of data:

  • Images → imaging
  • Brightness → photometry
  • Color → spectroscopy
  • Timing → variability

Each involves a separate data goal, and together all four fold into your detector profile and its bandwidth needs (Example 4-1).

Example 4-1. Examples of data types
Brightness: e.g. 3.846 x 1,026 W in luminosity, 4.83 absolute magnitude

Spectral: e.g. "color image plus IR/thermal"

Timing: e.g. "On during the day, off at night"

You can also mix these data goals. An imaging spectrometer is a camera (imaging) that gives you a separate data frame for each color. Instead of seeing one picture, you can compare, for example, the image in red against the image in blue. ...

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