Equivalent Exposure Calculator
Have you ever visited a website with an impressive CCD image and wondered what it would take to get that picture with your equipment? This calculator will give you the necessary exposure time with a given CCD and telescope needed to match that taken with another camera and scope.
The camera and telescopes listed below are those for which data was readily available. There are currently 38 cameras and 87 telescopes to choose from. For other setups, data can be entered manually.