Sources

Picture 1

Slide 1

Picture 2

https://media.goboard.io/spectroscope_36046.htm

https://media.goboard.io/what-is-a-spectroscope.htm

http://amazing-space.stsci.edu/resources/explorations/groundup/lesson/basics/g23/

Slide 2

https://solarsystem.nasa.gov/deepimpact/science/spectroscopy.cfm