[20141108]
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2014/11/07 HST
Hilo: Fujiwara, Imanishi, Kashikawa, Minowa, Takato, Iwata
Skype: Masaomi Tanaka, Narita, Takashi Hattori
- Iwata explained past activities and expected timelines. Goal is to have draft to
present to SAC in Dec (12/24 JST) and present a draft plan in Subaru Users Meeting
(1/13-15 JST), and have a plan fixed by the end of 2015.
- for HDS Narita is thinking about using dichroic mirror and fibre at NsIR to enable
simultaneous spectroscopy optical and IR
- MIMIZUKU, SWIMS: need to review carefully the technical feasibility for easy
commissioning and being open to wide community for science use
- TUE frequency can be reduced if we decommission CsOpt / FOCAS. The question is
that day crew man power is sufficient to continue handling TUEs for HSC, PFS and
additionally CsOpt / NsOpt. Although for HSC and PFS two weeks-long runs are expected,
but Imanishi pointed out that in the past Suprime-Cam runs have been 10 days or so,
and the TUE frequency does not change significantly (HSC and PFS exchanges are much
more complicated) if we keep FOCAS. Iwata commented that aging of telescope and
enclosure is making day crews more and more busy.
- We need to figure out how much reduction of the number of instruments. One milestone
is the commissioning of PFS which would require significant man power and can last three
years or more. We need to estimate resources required for PFS commissioning and operations.
- Takato commented that PFS spectrographs have no moving parts and they will not be
cooled down (stable temperature control is required). Coldheads will run for 10 years
without replacement. So they are expected to be not consuming man power so much as
FMOS spectrographs did. However, the larger number of spectrographs and cold heads will
increase the probability of failure.
- A question was raised that why NAOJ HQ is requesting Subaru Telescope to reduce the
number of instruments.
[ Publication survey statistics ]
- rate of number of papers considered here among total publications?
[ Radar chart to evaluate priorities ]
- Demand:
- number of proposals submitted
- Competitiveness:
- Number of high score proposals?
- Publications / night?
- Citation index?
- Failure rate:
- downtime from operators logs
- cancelled nights
- Work load for maintenance / running cost
- Alternative opportunities:
- Time exchange programs (Keck, Gemini)
- TAO instruments
- Radar chart will be used to prioritize the instruments. Timeline would depend on the
other conditions such as commissioning of new instruments, expansion of time exchange
programs etc.
[ Action Items ]
- Estimate manpower required for PFS commissioning and operations (Takato)
- Collect information to produce radar chart
- Competitiveness: publications / open-use statistics (Tanaka, Iwata)
- Demand and Competitiveness: referee scores (Imanishi)
- Failure rate: (Imanishi)
- Work load / running cost: (Hattori)
- Alternative / time exchange: (Kashikawa, Narita)
Next meeting: (tentative)
HST: 11/25 13:00 - 14:30 annex meeting room
JST: 11/26 8:00 - 9:30
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