## Welcome to the 30m EMIR/HERA Time/Sensitivity Estimator
(J. Pety, S. Bardeau, E. Reynier)

This estimator was designed to allow you to quickly decide whether and how your propositions of observation are feasible. It thus computes and outputs simultaneously the results

- for 3 different weather conditions (i.e. excellent, good and average),
- for the different observing modes available (i.e. frequency switching, position switching and wobbler switching for tracked observations and frequency switching and position switching for OTF observations). The output repeats all the user input parameters. The searched numbers (either the reached sensitivity or the elapsed telescope time) are bracketed by ---> <--- for easy viewing.

The top options enable a quick change of the estimator behavior:

- SENSITIVITY|TIME: Estimates either the sensitivity or the telescope time.
- TRACKED|OTF: Estimates for either the tracked or the on-the-fly observing mode.
- WINTER|SUMMER: Estimates for either the winter or the summer season.
- VERBOSE TSYS|OTF: Toggles on or off additional information about the Tsys or the OTF computations.

All the buttons output the results associated with the newly selected estimator behavior.

Additional help is available in IRAM memo 2009-1 (EMIR) and IRAM memo 2010-1 (HERA).