Subaru/Keck Time Exchange Program

This is the instruction for Subaru users who intend to apply for Keck telescope time through the Subaru/Keck Time Exchange Program in S09A/2009A.

1. Details

Directors of Subaru Telescope and Keck Observatory agreed to continue a time exchange program for the semester which corresponds to 'S09A' of Subaru and '2009A' of Keck, both begin at 2009 February 1 and end at 2009 July 31. This time exchange program is coordinated so that astronomers in each community can mutually access to some of the unique instruments of each telescope.

Observations with both Keck and Subaru telescopes will be executed in a 'classical' mode. Keck observations are usually executed remotely from the Keck office at Waimea. Please refer to this Keck webpage .

Scientific merits of the proposals are reviewed and determined in each TAC independently (namely, proposals from the Subaru community using Keck are reviewed by Subaru TAC). Those who have direct access to Keck time must refrain from submitting proposals to this program.

2. Available Instruments and Observing Time

Keck instruments available to the Subaru community in S09A are as follows.

Keck I telescope:
LRIS

Keck II telescope:
DEIMOS
ESI
OSIRIS
NIRC2
NIRSPEC
+
Adaptive Optics with Laser Guide Stars (LGS-AO)
Adaptive Optics with Natural Guide Stars (NGS-AO)

LGS-AO or NGS-AO can be combined with OSIRIS and NIRC2 , but NIRSPEC is limited only to observations without AO.

LGS-AO backup program : Those who request LGS-AO time must prepare for a backup program, because cloudy conditions limit the propagation of the laser. For OSIRIS + LGS-AO proposers, OSIRIS with NGS-AO, NIRC2 with NGS-AO, and NIRSPEC without AO, are available as a backup instrument. For NIRC2 + LGS-AO proposers, NIRC2 with NGS-AO, and NIRSPEC without AO, are available.

The unique capabilities of these available Keck instruments, compared to the existing Subaru instruments, are briefly summarized for the Subaru community.

A brief summary of Keck instruments available this time
LRIS	LRIS is an optical spectrograph, with high sensitivity in the near-UV wavelength range (3300-4000 Angstroms). LRIS is used in combination with the recently commissioned Atmospheric Dispersion Compensator which improves the efficiency of LRIS between 3100 and 11,000 Angstroms. Because of the upgrade of the LRIS red detector, LRIS will not be available in 2009 February, and be available on a shared-risk basis in 2009 March - April.
DEIMOS	DEIMOS is an optical multi-object slit spectrograph. For medium-resolution spectroscopy (R = 1000-2000), the field of view (5x16 arcmin2) and the number of simultaneously observable objects (up to 150 objects per slitmask) are both 3 to 5 times larger than Subaru FOCAS .
ESI	ESI is an optical spectrograph, with high spectral resolution (R ~ 10000) and high throughput at >7000 Angstroms. It can cover 3900-11,000 Angstroms in a single exposure.
OSIRIS (with LGS/NGS-AO)	OSIRIS is an infrared integral field spectrograph. It can be combined with LGS/NGS-AO. The maximum field of view is larger than Gemini NIFS . OSIRIS requires AO.
NIRC2 (with LGS/NGS-AO)	High-spatial-resolution infrared imaging using LGS/NGS-AO is possible.
NIRSPEC (without AO)	NIRSPEC has he capability of medium-resolution (R=1000-2000) and high-resolution (R=25000) infrared spectroscopy at 1-5 micrometer.

Note that the above summary is not comprehensive. Please refer to the Keck instruments webpages for more details of the instruments.

The amount of the observing time available in S09A is 4 Keck II nights and maximum 2 Keck I nights . In S09A, maximum 2 LGS-AO nights are available to the Subaru community. The minimum amount of nights for each program is 1 night, because we cannot accept a number of short programs. Proposals requesting Target of Opportunity (ToO) observations are not accepted.

Keck DEIMOS has been highly oversubscribed in previous semesters. For DEIMOS proposers, if part of your scientific aims can be achieved with Subaru FOCAS or Gemini GMOS , and if telescope time allocation of Subaru FOCAS or Gemini GMOS, instead of Keck DEIMOS, is acceptable, please indicate so in section 13 of the proposal form. If Gemini GMOS time is allocated, proposers will have to prepare for the Gemini Phase-I form within a few days in 2008 middle November (soon after the Subaru TAC meeting date). It is recommended to read the Gemini Phase-I instruction carefully and make a preparation in advance.

3. Proposal Preparation for Programs using Keck Telescopes

Table 1. Guide for Proposers Applying for Keck Time
Phase-I Subaru Submission	Step 1. Proposers should submit their proposals to Subaru PROMS using a special application form (template_keck.tex) and a style file (subaru_keck.sty) by the deadline in Subaru S09A Call for Proposals (namely, noon, 2008 September 19, JST).

3-1. Step 1. Phase-I Submission to Subaru PROMS

Proposers intending to apply Keck observations via this Subaru Call for Proposals should use the special application form (template_keck.tex) and style file (subaru_keck.sty), which are similar to those for Subaru S09A Normal/Intensive program proposals. The form should be filled out following the instruction described below and be submitted to the Subaru PROMS. Proposals from the Subaru community to use Keck are treated as one of Subaru Open Use Programs and are reviewed in the same way as other Subaru proposals. All successful Subaru proposers will be asked to fill out the Keck Proposal Coversheet .

How to complete the Application Form:

Please follow the section 4 in the Call for Proposals.

"4-1 to 4-7":: Fill them as other Subaru proposals.
"4-8":: List LRIS or DEIMOS or ESI or OSIRIS (with LGS/NGS-AO) or NIRC2 (with LGS/NGS-AO) or NIRSPEC (without AO) for the instrument. Give the requested 'nights' in Normal Programs Form, as in the case of Subaru.
"4-9" to 4-13:: Fill them as other Subaru proposals. For DEIMOS proposers, if Subaru/FOCAS or Gemini/GMOS is acceptable as a backup instrument, please indicate so in section 13.
"4-14":: Describe "Observing Method and Technical Details" referring to Keck homepage
"4-15 to 4-18":: Fill them as other Subaru proposals.

4. Phase-I Contact Scientist

Phase-I Contact Scientist for Subaru Users applying for Keck time is Dr. Masa Imanishi (NAOJ) or Hideki Takami (NAOJ).