Results Box keeps a record of your data. When a window pops up, it may be in your way. Either click and drag the title bar of the window to move it out of the way. Or, click on F ile and choose H ide window. Or go to V iew and toggle Results to appear or hide.
Aperture Go to the menu and choose .
7 and 14 are a good settings for most images. Use aperture to control the size of the star area and sky area that is used to collect all the brightness counts for a star. Slice Choose S l ice to see a profile of the brightness counts along a line and to measure distance in pixels. Go to the menu and choose . Move your cursor to the image.