In general, slower cranking and larger target sizes gives better results. In truth, the closer the model is to the camera, the better, but be sure to point out to students that the model represents a situation where the camera/spacecraft is light-years away from the star. an opaque light-colored (or white) sphere as the star at a distance of 60 cm or less. a light bulb as the model star at a distance of 1 meter or less, or It's best not to move the camera during a trial. png graphics file that you can open in a graphics program. You can "Save" the data for any trial as a. You may click Pause button, then Resume, anytime during Data Capture. To adjust vertical scale, either click "Autoscale" or manually enter minimum and maximum % values at bottom and top of y-axis.
If desired, change duration of "Capture Data" (default time = 30 seconds)Ĭlick "Capture Data" button and make planet(s) orbit.
Making the targeting circle slightly smaller than the star is better than having it slightly larger than the star. Set the size of target circle to fit the star using slider on right of screen.
#Iswiff mac software
Start the software and click on "Allow" to let brightness data to come in from the camera.Īim the camera at the model star and center the targeting circle on the model star in the camera view.Īlter the height of the camera/laptop or the star-planet model so that the planet(s) actually pass in front of the star as seen by the camera view. Set up planet(s) to orbit the model star (light bulb or white sphere).
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