§ Notes

1. LIRIS: slit-mask preparation and manufacture takes approximately eleven weeks; PIs awarded time in multi-slit mode are strongly encouraged to initiate the design of slit masks at the earliest opportunity. Information about slit-mask design and timelines are given here; please email queries to the LIRIS MOS specialist Cecilia Fariña (cf@ing.iac.es). As of semester 2014B, the cost of manufacturing the slit masks (600 - 900 euros per mask) must be covered by the home institution of the proposing team.
2. ACAM: observations can be made at any time, except when an instrument is mounted at WHT prime focus.
3. AF2: improvements to the target-acquisition procedure and to the mapping of field distortion at WHT prime focus have improved the acquisition accuracy to better than 0.4 arcsec for 90% of fibres out to 20 arcmin from the center of the field of view (beyond this radius, there is significant vignetting). For reference, in seeing of 0.5 - 1.5 arcsec, a fibre-centring error of 0.4 arcsec leads to ~ 10% loss of light from a point source, relative to that from a well-centred fibre. Teams applying to use AF2 are encouraged to check the latest AF2 news.
4. INT WFC: offered at rotator angle 180 degrees only. When there is compelling scientific justification, other rotator angles (0, 90 or 270-degrees) can be offered for the duration of the run; changes to the rotator angle within a run are not permitted.
5. Visitor instruments: applicants wishing to submit proposals to use these should in the first instance contact the relevant person named in the above table. Applicants wishing to submit a proposal based on a new (to ING) visitor instrument should follow these instructions.
6. CCDs: specifications and technical details are given on the ING detectors page.
7. Filters: details are given on the ING filters page.