2P

P) Two Images of any kind
Don’t feel bad if you did not find the asteroid in that single image. Its almost impossible unless you have previous knowledge of its position!
Could displaying two asteroid images at the same time help? How? Type your answer in the JOURNAL below.
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Let’s first explore the idea of using two images at a time with galaxies and/or planets.
The link to Afterglow Access is here if you do not already have it open:para1:
1. TWO IMAGES
a) In Afterglow Access, go back to your file library folder on the upper left and open the Sample folder. Scroll down the list and find the IDATA folder. Scroll down in this folder and find the M83 (galaxy) images – there are three. Click on any two to select them. Then click on Open on the lower right. Your teacher or leader may also have 3D or tactile models of this galaxy available.
**NOTE: You can also try two Jupiter images. Again, open the SAMPLE folder in Afterglow Access, open one Jupiter image from the IDATA folder, and then one Jupiter image from the Winston Salem Teacher Workshop folder, which is also in the Sample folder.

b) Afterglow Access has options to show two images at once. In your file library list, click on the image you want to display. You will notice this puts your image in a tab at the top of the viewer window. You may click on as many images as you would like and they will appear in tabs across the top of the viewer window.
– To see two images in the viewer screen at once, go to the very left side of your screen. Under the file library icon is the Workbench Settings icon. Click on this. Choose how you would like to view the two images listed in the tab. Close the workbench settings and open the file library. The file highlighted in blue is the active screen.
c) In the viewer panel, find the settings for each image (they are directly under the image).”Zoom To Fit” the current active image. If you are also using the 3D models, ask yourself what “Zoom To Fit” means for these.
d) Record a few ideas in the JOURNAL BOX below as to what an astronomer might want to do with two images of the same object.
e) Try the sonification tool on the two images.
f) Record how sonification could help you. Does the tool work when the image is oriented in a different manner? (Recall the Image Orientation Options are available at the bottom of the Display Settings panel (right side).
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2. ADDING TWO IMAGES
Answer the following questions in the JOURNAL BOX below.
a) Why do you think an astronomer would want to add two images together?
– Relate this to a pair of like sounds. Two phones with the same tone app would demonstrate this nicely. Would there be any reason to combine the pair of sounds?
b) Now go back to the two images. What would need to be done before adding two images together? List several things in the JOURNAL BOX.
c) You will have the opportunity to explore the “Image Calculator” tool, which includes addition, in the next part.

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3. QUORUM ACTIVITY
This activity has a set of matrices. Use the link below to open the Quorum Box in a new tab. Either arrange side by side, or use ctrl tab# to navigate between this tab, which has the instructions, and Afterglow Access.
FIRST, output the two matrices (with a “space” in between them), then predict what you would need to do to get them to look the same. Record your predictions in the JOURNAL BOX.
SECOND, use Quorum commands to make them look the same. Possible choices: Shift, RotateRight/Left, FlipVertical/Horizontal, Transpose.
MAKE SURE you output both matrices in the beginning, and then again after you do the commands. Output “space” between the matrices for easier examination.
****REMEMBER to save the matrix you are manipulating to a new matrix AFTER EACH command!
Afterglow Access has an Aligning Tool. It is the 9th tool down in the column on the right of the workbench. You will need to have two images that are from the same area of the sky. We will explore this tool at the end of the next part.
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JOURNAL BOX
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