To analyze data from space and ground-based telescopes, scientists rely on
computers, not only to do calculations, but also to change numbers into images.
Scientists and programmers go through painstaking calibration and validation
processes to ensure that computers produce technically correct images. Visual
representation of X-ray data, and radio, infrared, ultraviolet, visible, and
gamma, involves the use of representative color techniques where colors in the
image represent intensity, energy, temperature, or another property of the
radiation. This activity creates models from numerical data. Each model will be
unique, depending upon how the photon intensity and energy data was processed –
binned and assigned color values – and then analyzed. Artistic representations
of this data will be made "by hand" and also by using web-based js9 imaging and
analysis software. This is one step in allowing students to do their own
astronomy research using real data sets.
TAKEAWAYS:
Scientists learn about astronomical objects from the light they produce. Colors in images are based on data from this light and are used to highlight different features.
SPEAKERS:
Pamela Perry (Lewiston High School: Lewiston, ME)