Exposure time calculator

A new version of the Exposure Time Calculator was released which now includes estimates of the expected peak counts both for photometry and spectroscopy, both with point and extended sources, and with warnings (e.g., if a target might be saturated in the given exposure time) and clarifying texts. Also binning and multiple exposures has been added as an input options. See

http://www.not.iac.es/observing/forms/signal/v2.0/index.php