Coloring the Universe: Questions & Answers

1. Reflect: What can different wavelengths of light reveal about astronomical objects?(Answer not provided)
2. Choose the violet filter. What color passes through the violet filter?(Answer not provided)
3. With the violet filter selected, what colors of light are being blocked by the violet filter?(Answer not provided)
4. Objects in space can emit many different wavelengths of light, from gamma-rays to radio. If you had access to filters for all the different wavelengths of light and wanted to observe the ultraviolet light from an object in space, what filter would you use?(No selection)
5. The red shirt looks(Answer not provided)in the image taken through the red filter, and looks(Answer not provided)in the image taken through the blue filter, because the red filter(Answer not provided)red light, and the blue filter(Answer not provided)red light.
6. The green shirt looks(Answer not provided)in the image taken through the red filter, and looks(Answer not provided)in the image taken through the green filter, because the red filter(Answer not provided)green light and the green filter(Answer not provided)green light.

7. Try to recreate this image using the Color Filter Tool:

   • Turn on each filter by clicking the R, G, or B button.
   • Since the filtered images are in greyscale, they must be colorized. Do this by selecting a color from the dropdown menu in the center column.
   • Now adjust the color intensity sliders to create an image that looks similar to the full color image above.
8. The(Answer not provided)filter transmits the longest wavelengths of light which are(Answer not provided)light
9. The(Answer not provided)filter transmits the shortest wavelengths of light which are(Answer not provided)light
10. Which of these are broadband filters? Choose all that apply.
    • (No selection)
11. What two filters transmit green light?
    • (No selection)
12. What four colors of light are transmitted by the r filter?
    • (No selection)
13. If you wanted to detect a hot star that is giving off short wavelength visible light as well as ultraviolet light, which filter would be best to choose?
    • (No selection)
14. If you wanted to detect a gas and dust cloud that is giving off long wavelength visible light as well as infrared light, which filter would be best to choose?(Answer not provided)
15. If you wanted to detect a galaxy whose light has been stretched to the longest wavelengths that Rubin Observatory can observe, which filter would you use?
    • (No selection)
16. Star(Answer not provided)is hottest and appears brightest in the(Answer not provided)wavelength image, taken with the(Answer not provided)filter.
17. Star(Answer not provided)is coolest and appears brightest in the(Answer not provided)wavelength image, taken with the(Answer not provided)filter.

18. Create a color balanced image of this cluster with the hot star appearing blue, and the cool star appearing red. (Data from HSC-SSP and CLAUDS Surveys)
19. Regions of active star formation will emit large amounts of(Answer not provided)wavelength light.
20. In which filter is the active star forming region most clearly defined?
    • (No selection)

21. Create a color balanced image of this galaxy with the star forming regions appearing blue.
22. In which image does the most distant galaxy appear brightest?(Answer not provided)

23. Create a color balanced image with the most distant galaxy colorized red. (Data from HSC-SSP and CLAUDS Surveys)
24. Which of the following is a correct chromatic ordering for the four filters shown?(No selection)
25. Which one of the following is an example of an incorrect chromatic ordering for the four filters shown?(No selection)
26. As you have just learned, chromatic ordering of colors is used to communicate information about the wavelengths of light in the image. Give an example of how color(s) in your culture is used to communicate a message. What is the color, and what message does it communicate?(Answer not provided)

27. An image will appear when you select filters. Your goal is to create a color balanced image that shows where star formation is occurring in the galaxy.

    • Click on the filters you wish to use (it’s not necessary to use all six filters).
    • Assign a color to each filter using chromatic ordering.
    • Adjust the intensity sliders to create a color balanced image.

    You should now see a full color image of UGC12635, made by combining the light from the filters you chose. Data from the HSC-SSP and CLAUDS Surveys
28. What is something communicated by one of these images that your image didn’t communicate? Which image? Describe.(Answer not provided)
29. Write a caption for your image that provides information about UGC12635, similar to the amount of detail used in the captions above.(Answer not provided)
30. You are wearing a pair of sunglasses and notice that the lenses of your glasses make the color of the sun look yellow. What is the most likely explanation for this color change?(Answer not provided)
31. An object is imaged using the z, g, and u filters. What colors would you assign to each of these filters to chromatically order them? In your answer, provide the filter letter and its corresponding color.(Answer not provided)
32. What can different wavelengths of light reveal about astronomical objects?(Answer not provided)
33. Which type of object would you like to investigate?(No selection)
34. What question do you want to answer about your object?(Answer not provided)
35. What filters will you use for conducting your investigation? Why? (You don’t have to use all six filters.)(Answer not provided)

36. Create a color balanced and chromatically ordered image to answer your scientific question. (Data from HSC-SSP and CLAUDS Surveys)
37. Write a caption that describes how your image answers your scientific question.(Answer not provided)
38. When you first started making your image, it may not have looked as you expected. What didn't work? What changes or adjustments did you have to make in order to create a color balanced image that effectively answered your research question?(Answer not provided)