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RAW mode observationsRAW mode observations are less efficient than ADD mode (see tables below). Imaging
†: RAW mode is not available for these filters. Spectroscopy
*: ADD and RAW modes for NM FULL and NH produce exactly the same results (i.e., no gain of any kind by switchinng to RAW mode). We have found a serious flaw in the calculation of the observing efficiency of RAW mode published in 2011 August. We have now corrected these numbers above. We sincerely apologise for those who considered using RAW mode but abandoned the idea upon seeing the erroneously calculated extremely low efficiencies between 2011 August and 2014 October. Takuya Fujiyoshi |