|NOTE: As announced here, the fibre spatial profiles were improved in February 2015,
and are now narrower and peak at higher ADU levels (10-30% higher). This will be helpful for programmes with faint targets. The ETC will issue a warning if your
observations reach close to saturation. In this case, please consider shorter exposure times and/or multiple exposures. Typically this should happen only if your
targets are brighter than V≈11.