Subject: APO 3.5m users committee minutes, Nov 2014 meeting
From: Suzanne Hawley
Submitted: Sun, 7 Dec 2014 23:08:04 -0800 (PST)
Message number: 1348
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APO 3.5-m Users Committee Phonecon, 11/17/14
Attending: Suzanne Hawley, Mark Klaene, Bill Ketzeback, Joe Huehnerhoff,
Scott Anderson, Rachel Kuzio de Naray, Joanne Hughes Clark, John
Wisniewski, Jon Holtzman, David Brown (for Michael Strauss), Mark
Hammergren, Jeff Bary, John Bally, Rene Walterbos, and Bruce Gillespie
**********************************
User feedback and comments from institutional representatives:
o Washington - Scott had no issues or concerns.
o Georgia State - Rachel had no issues or concerns.
o Seattle - Joanne reported that there was a pointing/software issue on
one night that was later resolved. SPIcam worked well, and the seeing was
great.
o Oklahoma - John had no issues or concerns.
o Princeton - David said that the PU users have no reported issues.
o NMSU - Jon had no issues or concerns.
o Chicago/Adler - Mark mentioned problems with the new Chebyshev tracking
routines; these are being worked on with Russell Owen.
o NAPG - Jeff said the users are happy.
o Virginia - No report.
o Colorado - John had no user concerns.
o Johns Hopkins - No report.
**********************************
Discussion of telescope/instruments report:
Mark highlighted the report below. There were two occurrences of issues
with the azimuthal motion of the telescope, which are now understood.
Also, TripleSpec twice produced corrupted images, and then corrected
itself in later image files. Staff at Virginia are looking into it. Joe
reported that the new imager, ARCTIC, is currently pumped down, powered
on, and he is starting the characterization of the CCD. Bill reported
that ARCSAT has been behaving well, although there have been a couple of
instances of software glitches. It seems that most ARCSAT users have been
happy with the shared-risk observing program.
*************************
3.5-m Telescope and Instruments Highlights
10/22/14 through 11/14/14
0) Overview
Weather for the end of October and the first half of November has started
to cool off with several nights with high humidity. We have yet to see
our first snow fall of the year.
1) Telescope
We had two instances of telescope runaways. We believe we understand each
instance and have taken corrective measures in software. Otherwise the
telescope has been behaving well with the new TCC software.
2) Instruments
DIS has been operating normally.
Agile is operational.
TripleSpec has had two instances of corrupted images. The first instance
the problem corrected itself before further troubleshooting could be done.
The second is being investigated. Mike Skrutskie is on site and we are
consulting with him.
SPIcam was operational during this period.
Echelle inter-order light is holding with no additional issues.
NIC-FPS continues to operate in shared-risk observing mode due to
occasional image corruption issue. NFS less than 9 is operational.
GIFS is operational.
3) ARCTIC
The instrument development is proceeding on schedule. The dewar has a
loaner CCD from STA and has been integrated with the readout electronics
by Bob Leach. It is at UW for further testing and development. The
optics order will be placed within the next few weeks. We hope to start
fabricating the remainder of the instrument after the first of the year.
**********************************
Report on Board meeting:
Suzanne said that the ARC Board of Governors meeting went well, and thanks
for all the slides that showed scientific results from the past year.
Notable in the past year was the unusually bad weather in September. The
overall downtime rate of 0.6% is similar to the last few years and is
again an impressive achievement and tribute to the 3.5m staff. The new
TCC and ARCTIC development were also highlighted. It was pointed out that
with the new GSU partnership and existing leases, we are now financially
solvent through 2016, and the plan is that extra income will be invested
in infrastructure and instrumentation upgrades. Rene added that the Board
was pleased with the stability of the telescope partnership and its
operations, as well as the new developments either underway or being
planned.
Mark led a discussion at the Board meeting on the pending situation at
Sunspot with the National Solar Observatory. Although the date may slip,
it is currently believed that the NSF will relieve NSO of responsibility
for the Sunspot site in 2017. The biggest impact to APO will be access to
water. Other concerns entail use of the aluminizing chamber, housing for
staff and visitors, and the occasional use of heavy equipment. All these
are at risk, and we are discussing with NMSU a proposal to take over
limited operations at Sunspot of the critical facilities and services we
need. This said, it is apparently not completely clear to us what are the
intentions of the NSF when NSO leaves.
**********************************
GIFS update:
Mark announced that GIFS is up and running, and is being kept cold. The
instrument is available for remote use on the telescope, and there is
on-line documentation. Engineers at GSFC are planning to bring a
photon-counting detector for engineering in 2015. If interested, contact
John Wisniewski at Oklahoma or Michael McElwain at GSFC. It is hoped that
the new detector will be at APO in the second quarter. Suzanne added that
she hopes that ARC users will start to use GIFS as a real facility
instrument, and potential users should try it out to learn its
capabilities.
**********************************
APOGEE fiber link to 3.5m (action item):
Suzanne said she is still polling the community to see how much interest
there is for a fiber run from the 3.5-m telescope to the H-band APOGEE
spectrograph at the Sloan telescope. Based on discussions at the Board
meeting, it appears that SDSS is OK with the concept of the instrument
being scheduled for use with the 3.5-m telescope perhaps 2-3 nights/month.
The Users Committee members relayed the levels of interest for this
capability at their respective institutions:
o Scott (UW) - mild interest
o Joanne (Seattle) - mild interest
o Rachel (GSU) - none to lukewarm
o JohnW (Okla) - mild
o David (Princeton) - no update from last month
o Jon (NMSU) - Strong interest, especially potential for Gaia follow-up
o Jeff (NAPG) - young stars, mild interest
o John (Colorado) - Strong interest, two specific science cases
o Don York (Chicago) - Strong interest
Suzanne added that we could consider laying fibers between all the APO
telescopes, which would provide additional opportunities. Suzanne asked
for two people to work with Nick MacDonald at UW to develop a technical
and scientific case for the fiber project, either as internally funded or
with new funding from external sources. John Bally and Jon Holtzman
agreed to be on the panel. Bruce also volunteered, and Don York has
expressed interest. Any other interested users are welcome to join,
please send email to Jon H. and Suzanne.
**********************************
New optical spectrograph design study:
Suzanne said that she talked with the ARC Board about the need to replace
DIS in the next few years. Before developing a concrete plan for a new
spectrograph, we first need to have a group to study what characteristics
and science a new spectrograph would address, which would lead to
instrumental design requirements. We need to find a Principal
Investigator willing to lead the design and construction of the new
spectrograph which will likely be a $2M project. This led to an action
item:
=====> ACTION: Users Committee members to poll their constituents to
engage and enlist people who are willing to be involved with the
specification and development of a new optical spectrograph.
**********************************
Miscellaneous:
Suzanne informed the Board at the recent meeting that she intends to step
down as Director of the ARC 3.5-m telescope, likely when her current (4th)
term ends in December, 2016. A Director search will probably be initiated
sometime next year, so there will be some overlap in 2016. If anyone is
potentially interested, Suzanne would be happy to discuss the job with
them even before the formal search process begins.
**********************************
ACTION ITEMS:
[open from previous meeting]:
=====> Action: users committee to gather information from users about
scientific interest in a fiber feed to APOGEE (2.5m) and smaller
telescopes on site.
Status: Commmittee appointed, other users welcome to join, action
item closed.
[new from this meeting]:
=====> ACTION: Users Committee members to poll their constituents to find
people who are willing to be involved with the specification and
development of a new optical spectrograph.
**********************************
Next meeting: The next Users Committee phonecon will be on Monday 15
December. The agenda and other materials will be sent to the committee
members during the preceding week.
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