|
|
|
____________________
|
|
|
|
Earthquake stop press
Status of UKIRT
post-earthquake of 15 October 2006
|

|
UPDATE -
27-Oct-2006 HST
Confirmation that UKIRT is now operating well in Wide Field mode, no
further adjustments having been necessary.
UPDATE -
24-Oct-2006 HST
UKIRT operated successfully on the final night of its Cassegrain block,
which finished on Sunday 22-Oct-2006. It is now shutdown for
installation of the Wide-field camera WFCAM, which will occupy the
telescope for the coming 6 months. There are no apparent ongoing
problems relating to the earthquake and, pending pointing and wavefront
tests with WFCAM, we hope that this will be the final update on this
page. Many thanks to all those who have enquired and checked in here.
UPDATE -
18-Oct-2006 HST
Weather has held off for the start of the night and a pointing test has
been completed. A simple analysis of the results suggests that the
telescope has (at least) rotated around an approximately vertical axis
by about one arcminute, or approximately 2mm at each column. All three
Cassegrain instruments are now operable.
UPDATE
- 17-Oct-206 HST
Weather is still not allowing us to open and check pointing. CGS4 and
UFTI are now both operational and UIST is approaching its operating
temperature. A small aftershock of 4th magnitude was felt this morning
but the telescope shear pins remained intact. Estimates of the
magnitude of the Sunday earthquakes are creeping upwards - the main
quake is now 6.7 and the first aftershock was 6.0.
Progress at JCMT will be monitored at http://www.jach.hawaii.edu/JCMT/announce/earthquake_20061016.html
UPDATE
- 16-Oct-2006 HST
Two significant earthquakes registering 6.6 and 5.8 struck the islands
between 0700-0730hrs on Sunday 15 October. There were a number of
aftershocks. The epicenter was a few miles off the west coast of the
Big Island of Hawaii (west of Kailua-Kona for those with knowledge of
the region).
Hilo Office
The Hilo office is functioning normally. It was inspected on Sunday and
there is no apparent structural damage.
UKIRT
An observing run at UKIRT had ended an hour or so before the quake and
the observers were back at Hale Pohaku. Due to having worked split
night shifts, they were able to return to the telescope to conduct some
initial visual inspections but there was no power at the summit between
the time of the quake and about 1430hrs (some 7 hrs in total) so
further inspections were not possible.
Engineering inspections took place today and the mechanical systems
have been tested with no apparent faults or damage. The computer
systems are also up and running. Of the three instruments, one (CGS4)
is working, the other two are cooling down steadily and UFTI should be
available by second half of tonight. Provisionally, UKIRT is
operational pending the results of on-sky pointing and other tests
which will be done as soon as the weather permits.
JCMT
JCMT was being operated remotely on Sat/Sun and the TSS was at Hale
Pohaku when the quake struck. He was unable to go back to the summit
(without exceeding the 14 hour limit) so the visual checks were
conducted by the UKIRT observers. In similar circumstance to UKIRT (no
power etc), it was decided that further inspection would take place on
Monday 16 October.
That inspection work has now completed and there appear to be no
mechanical damage or faults. The computers are up and running
and, weather permitting (there is now a storm coming in!), the
telescope will be opened and exercised tonight. Closed-dome tests so
far indicate that the systems are all functional.
JAC Staff
There have been no reports of any injuries to staff or serious loss or
damage to homes or property.
|
|