Subaru/Gemini Time Exchange Program

This is the instruction for Subaru users who intend to apply for Gemini telescope time through the Subaru/Gemini Time Exchange Program in S17B/2017B.
Only Japan or Taiwan researchers (i.e., those belonging to institutes in Japan or Taiwan, or those of Japanese nationality) are eligible for this Subaru -> Gemini application.

1. Details

Directors of Subaru Telescope and Gemini Observatory agreed to continue a time exchange program for the semester which corresponds to 'S17B' of Subaru and '2017B' of Gemini, both begin at 2017 August 1 and end at 2018 January 31. This time exchange program is coordinated so that astronomers in each community can mutually access unique instruments of each telescope.

In S17B, normal observations with Gemini telescope, except ToO observations, will be executed in a 'classical' or 'queue' mode whichever you prefer. Proposals requesting Target of Opportunity (ToO) observations can be submitted to Gemini, where accepted ToO programs will be executed in a queue mode.

Gemini North will not be available from August 1th to August 28th for the repairing work of the dome shutter. The new Gemini South laser is expected to be commissioned in August 2017.

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

1.1 Gemini Large and Long Program (LLP)

The Subaru community can apply for the Gemini Large and Long Program (LLP), through the Subaru-Gemini time exchange program. Please refer to this page for more details. A letter of intent is not necessary, if you submit through the Subaru-Gemini time exchange program. Subaru TAC will review the submitted LLP programs. Please use the same format as used for the Subaru Intensive Program. The default mode of executing LLP is Priority Visitor Mode. It is strongly recommended to visit the Gemini Observatory for your first LLP run, to see the telescope and instrument, and interact with the Gemini staff on data reduction, etc. After your second run, a queue mode will be an option, but ‘Eavesdropping’ is strongly recommended.

1.2 Fast Turnaround Program

The Subaru community can apply for Fast Turnaround programs, in which up to 5 nights per semester are available for Subaru Community. Their submission deadlines are independent from the deadline of the S17B Call for Proposals The review of Fast Turnaround programs is made following the rule set by Gemini and is done independently from Subaru TAC.

2. Available Instruments and Observing Time

Gemini instruments available to the Subaru community in S17B are as follows:
GMOS (North or South)
NIFS (North)
NIRI (North)
GNIRS (North): The short red camera is not available
Altair (Adaptive Optics; AO) (North)
GRACES (visitor instrument) (North)
DSSI (visitor instrument) (North & South)
PHOENIX (visitor instrument) (South)
GSAOI (South): Queue only, Bands 1 & 2 (IQ70&IQ85)
GeMS (Multi-conjugate Adaptive Optics; MCAO) (South): Queue only, Bands 1 & 2 (IQ70&IQ85)
FLAMINGOS-2 (South) (imaging and long-slit modes)
GPI (South)

Please check the Gemini 2017B Call for Proposals, which will be released around 2017 March 1 (MST).

For Altair , AO with both laser guide stars (LGS) and natural guide stars (NGS) are available with combination of NIFS, NIRI, and GNIRS.

LGS-AO backup program (for classical observations): Since both good seeing and photometric conditions are needed for successful LGS-AO observations while the success rate is not high (~25%), those who intend to conduct such AO observation (in classical mode) must prepare a backup program. For NIFS + LGS-AO proposers, NIFS without LGS-AO (namely, NGS-AO or without AO), GNIRS without LGS-AO, and GMOS are available as backup instruments. For NIRI + LGS-AO proposers, NIRI without LGS-AO, GNIRS without LGS-AO, and GMOS are available. For GNIRS + LGS-AO proposers, GNIRS without LGS-AO, and GMOS are available. For LGS-AO proposers, the scientific importance of the backup program is also taken into account in the proposal evaluation process.

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

A brief summary of Gemini instruments
GMOS GMOS is an optical spectrograph with the Nod and Shuffle capability. Higher sensitivity than Subaru FOCAS may be expected depending on observing modes. GMOS has an integral field spectroscopic capability.
NIFS NIFS is an infrared integral field spectrograph. LGS/NGS-AO is available. Higher sensitivity than Keck OSIRIS may be expected, particularly in the K-band.
NIRI Infrared imaging with LGS/NGS-AO is possible.
GNIRS Infrared JHK longslit or cross-dispersed spectroscopy with LGS/NGS-AO is possible.
GSAOI Near-infrared, wide-field, high-spatial-resolution imaging is possible, in combination with Multi-Conjugate Adaptive Optics system (GeMS).
GPI Extreme adaptive-optics imaging polarimeter/integral-field spectrometer
FLAMINGOS-2 Near-infrared imaging (6.'1 diameter circular field) and multi-object spectroscopy (R = 1200-3000 within a 2'x6' quasi-rectangular field) of southern sources are possible (this MOS mode is not opened at present but only the long-slit mode is available for spectroscopy).
GRACES GRACES utilizes a 270 m fiber optic feed to the ESPaDOnS spectrograph at CFHT, providing a maximum resolving power of R~67,000 between 400 and 1,000 nm. The throughput redward of 600 nm is competitive with existing high-resolution spectrographs on 8-10 m class telescopes.
Phoenix Phoenix is a high spectral resolution (R~50,000-80,000) near-IR (1-5μm) echelon spectrometer
DSSI DSSI (Differential Speckle Survey Instrument) provides simultaneous diffraction-limited optical imaging (FWHM~0.02" at 650nm) of targets as faint as V~16-17, in 2 channels over a ~2.8–5.6 arcsecond field-of-view.

Note that the above summary is not comprehensive. Please refer to the Gemini webpage for the details of the instruments and telescopes.

We anticipate that the amount of the exchange time available in S17B is minimum 5 nights, but the actual number of exchange nights is dependent on the oversubscription rate of both telescopes and scientific evaluation by each TAC. The minimum amount of requested nights for each classical program is 1 night. However, for queue observations, programs which require repeated observations of short exposures are welcome.

All Gemini instruments listed above are available for ToO programs. There are two types of ToO observations. Rapid ToOs require observations within 24 hours, while Standard ToOs will have a slower response time of more than 24 hours. The PI must specify whether the observations require Rapid or Standard response. Rapid ToO programs will be charged for time spent on any observation that the Rapid ToO interrupts; both Rapid and Standard ToO programs will be charged for all on-sky calibrations.

Target coordinates
Gemini North (non-LGS) RA = 19:00 → 12:30 hour and DEC= -37 → +90 degree
Gemini North (LGS) RA = 20:00 → 11:30 hour and DEC= -27 → +68 degree
GSAOI+GeMS (South) RA = 19:00 → 11:00 hour and DEC= -75 → +15 degree
GPI (South) RA = 16:00 → 12:00 hour and DEC= -80 → +20 degree
Other Gemini South Instr. RA = 16:00 → 12:00 hour and DEC= -90 → +28 degree

Since individual instruments may have additional RA limits imposed, it is important to check the Gemini 2017B Call for Proposals, which will be released on around 2017 March 1 (MST).

3. Proposal Preparation for Programs using Gemini Telescopes

Table 1. Guide for Proposers Applying for Gemini Time
Phase-I Subaru Submission Step 1. Proposers should submit their proposals via the webform by the deadline in Subaru S17B Call for Proposals (namely, noon, 2017 March 7, JST).
Phase-I Gemini Submission Step 2. They also need to file their proposals to Gemini by the electronic submission using PIT (Phase I Tool) by the deadline described in Gemini 2017B Call for Proposals (2017 March 31 MST).
Phase-II Submission Step 3. For the accepted proposals, Phase-II submission to Gemini Observatory is necessary.


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

Proposers intending to apply Gemini observations via this Subaru Call for Proposals should access the ProMS 2.0 page to fill the webform. Proposals from the Subaru community to use Gemini are treated as ones of the Subaru Open Use Programs and are reviewed in the same way as other Subaru proposals.

How to complete the Application Form:

Please follow the instructions detailed in 'How to Submit'.

"1-13"(Scheduling Requirements):
If your request "queue" observations, please provide detailed information here.
"1-15"(Observing Method and Technical Details):
Describe by referring to Gemini webpage.

3-2. Step 2. Phase-I Submission to Gemini

All the proposals requesting Gemini time should also be submitted to Gemini's Phase I Application, by the deadline for Gemini's semester 2017B Call for Proposals (2017 March 31 MST). Gemini has released a new Phase I Tool, please be sure to download the latest version from the website. With the new Tool, the science and technical cases, with Figures, Tables and References, are attached as a single PDF file. Latex and Word templates are available for download from the Gemini page, which explain the required contents and page limits.

We understand that such double submissions are inconvenient, but it is needed to match the current proposal processing systems of Subaru and Gemini. Your description in the technical justification section in the Gemini Phase-I form will be used for technical evaluation by Gemini. Regarding the scientific justification (SJ) section, you can just give the same SJ (of 2 pages; i.e., you do not have to reduce it) as submitted to Subaru TAC, despite that the prescribed SJ length in Gemini Phase-I form is only 1 page. SJ is used by Gemini staff for the purpose of understanding the science goal in order to provide adequate support. The target names cannot be concealed in Gemini Phase-I submission.

Please read the instruction in Gemini 2017B Call for Proposals carefully, when available (around 2016 March 1 MST). Subaru users should use Gemini PIT and submit their proposal by the deadline 2017 March 31 (MST). Please select "Subaru" for the "partner" in PIT submission tab page.

Table 2. Gemini Phase I Submission
Deadline Subaru users should submit their Gemini Phase I application by 2017 March 31 (MST).
Submission Please use Gemini PIT and select "Subaru" as the "partner" in the "Submit" tab page.

3-3. Step 3. Phase-II Submission to Gemini

The PIs of the accepted programs have to complete the Phase-II proposal submission to Gemini by themselves, following the instruction in the web page, Phase-II Overview.

4. Phase-I Contact

Please contact cfp_consult_at_optik-ml.mtk.nao.ac.jp.

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