The main long-term repository for ING data (from the WHT, INT and JKT) is
the data archive at CASU
in Cambridge, UK.
In addition, ING maintains a
local engineering archive
(accessible to staff only)
which currently holds a copy of all WHT and INT data taken after 18 July 2011.
The engineering archive is used e.g. for quality control and troubleshooting,
and when PIs request a copy of mislaid data.
WEAVE, the new multi-object spectrograph at the WHT
(first light expected early 2020),
there will be stored in a dedicated data archive (hosted by TNG on La Palma).
WEAVE data will also be copied to the
ING's local engineering archive, but not to the CASU archive.
During the era of WEAVE, observations from non-WEAVE instruments will
continue to be copied to the CASU archive and to ING's local engineering
Digital observing logs back to January 1993 can be obtained (if more than a
year old) by querying the
Prior to 1993, observations were logged in A3 paper logbooks, currently stored at ING.
For an individual exposure, most of the information given in the
corresponding line of the observing log is reproduced in the
FITS headers of the raw data.