Obtain the two required images from the location indicated by your instructor and OPEN the two images using the HOU Image Processing software. Keep your web browser open and move back and forth between the HOU software and the browser as you go through the tutorial. Below are links to explanations of the four main steps involved in the image analysis process. Subtract the sky value from both images 2. Normalize the brightness values of the two images 4.
Subtractions come out the best if they are done in the above order.
Revised 8 November, 1998. This tutorial is the result of the collaborative efforts of Hughes Pack, Drew Trainor, Will Dane, Tim Spuck, Jodi Asbell-Clarke, John Roop and Edward Guice.