Want to know the size (in kilometers or miles) of a sunspot, lunar crater, festoon on Jupiter, etc. that you see in a photographic image? My latest software creation called Automated Astronomical Object Feature Measurer (or AAOFM for short) can quickly and accurately tell you the answer. The app is offered free for download.
Click the image below to go to my website and choose the menu option to the left labeled Automated Astronomical Object Feature Measurer to go to the appropriate download area.