How to estimate observing times

The following sections give a step by step method to estimate observing times. It should be noted that the most accurate way to calculate observing times is using the PGA software, or the LWS Time estimator.

• Calculation of S/N per ramp
• Calculation of number of ramps
• Calculation of the required integration time
• Calculation of the number of points in the scan
• Calculation of the required integration time for the observation
• Calculation of the TDT