Gemini Observatory

Marianne TakamiyaOctober 2000

Instruments UnderwayMauna Kea Cerro Pachon

Instruments Underway

NIRI GMOS MICHELLE NIFS

T-ReCS GMOS GNIRS FLAMINGOS-2 NICI HROS

Mauna Kea Cerro Pachon

Instrument Availability Summary(Dates indicate first Community access)

1999

UH

AO

S

Gemini-South

Gemini-North

2000

OS

CIR

Op

’s H

an

d-o

ver

FLA

MIN

GO

S

CIR

PA

SS

NIR

I2001

GM

OS

T-R

eC

S

GM

OS

Op

’s H

an

d-o

ver

Hoku

pa’a

-85?

PH

OEN

IX2003

GN

IRS

HR

OS

LG

S A

LTA

IR

NIC

I

FLA

MIN

GO

S2

MIC

HELLE

2002

ALTA

IR

NIF

S

Next Generation Instruments

A near-infrared imager and spectrometer, optimized for MCAO, are likely the next set of instruments to be built within the Gemini program

FLAMINGOS-2 will provide some 1-2.5 µm slit spectroscopic capability as well

Imager Sample MCAO PSF across ~2 arcmin FOV Nominally 2x2 mosaic of 20482 arrays 1-2.5 µm Rockwell devices, either HAWAII-2 or CdZnTe

(requires detector development)

MCAO Optimized Spectrometer

Baseline design stems from current GIRMOS d-IFU tech study occurring at ATC and AAO ~2 arcmin deployment field 1 - 2.5 µm coverage using 6 detectors IFUs

• 12 deployable IFUs total• ~0.03” spatial sampling• ~1x1” field for each IFU• R ~ 6000

Demonstration Science Programs

Hokupa’a Demonstration Science - Plan

K’, H, CO and K-cont imaging of in and around the Galactic Centre to study the distribution of stellar populations vs. distance from Sgr A* 6-8 fields in the GC 2 control fields 3 arcmin along plane 2 fields in “Arches” 10 arcmin North

Hokupa’a Demonstration Science Results

Overview of data: FWHM (H,K’) = 0.1” - 0.15” 9 fields of 20”x20” mapped in H and K’ 6 min (K’) / 12min (H) to 40min per field CO and K-cont on most fields

CTIO

K-band

1.5 arcsec 6’

bow shock?

20 stars/arcsec2 at K~21

IRS7

40”

Astronomy Picture of the Day astropic.htm

OSCIR Demonstration Science: Planning

Four options considered for 10um deep field ‘Blank’ field survey - rejected

• FOV too small given mid-IR source counts; sensitivity shallow compared with ultra-deep ISO surveys

X-ray selected fields - rejected• No suitable sample of reliable hard X-ray sources

SCUBA-selected cluster fields SCUBA-selected HzRG fields

• Strategy is to observe the brightest from both cluster and HzRG lists, four targets in total

• Some are unknown quantities in the mid-IR; one is a bright-ish ISOCAM detection; one has a good redshift, and there is the potential for serendipity with some less identified (and perhaps higher redshift) counterparts

OSCIR Demonstration Science: Results

OSCIR DS observations not yet taken place…….but encouraging results (sensitivity, image quality &

PSF) from first engineering run

QuickStart Service Observing

QuickStart Overview

QuickStart enables scientific use of Hokupa'a/QUIRC and OSCIR prior to the start of normal operations The aims are to exercise proposal, planning and

operational procedures, refine telescope and instrument performance, train support staff and get data out into the community

Proposals were submitted via the National TACs and ITAC in (what will become) the normal process

Successful applications are being executed by Gemini staff in a service mode

• Phase II detailed definition performed by Gemini Contact Scientists (in consultation with PI if necessary)

• Planning and execution of later QuickStart blocks will have direct involvement of National Office support staff from US, UK and Canada

• (Manual) data processing follows pipeline procedures

QuickStart Proposal Statistics

Oversubscription assumes 420 hr available and nominal partner shares Likely to be underestimate as some proposals neglected to

include significant overheads

# props oversubscriptionHK/Q OSCIR

US 78 544 572 6.4UK 32 179 82 2.8Canada 29 104 120 4.1Australia 2 56 0 3.1Chile 6 15 5 1.1Argentina 9 14 0 1.6Brazil 8 10 6 1.8Gemini Staff 11 52 52 2.5University Hawaii 5 58 0 1.4

totals 180 1032 837

requested time (hr)

0.065 arcsec at 1.65um

Hokupa’a QuickStart Performance

Performance is consistent with expectations Including AO correction as a function of observing

conditions and WFS target brightness, overheads Will refine web information before CfP

Observing efficiency is consistent with the goal for QuickStart 30% ‘shutter-open’ (cf 15% during dedication imaging)

Semester 2001A Schedule(1 Feb - 31 July 2001)

Announcement and Call for Proposals - 1 Sept NIRI final (on-telescope) Acceptance Test (AT)

continues• NIRI passed pre-ship lab AT in May• Initial HBF lab characterisation occurred in June-July

NTAC deadline for 2001A normal cycle: end Sept Specific date varies slightly from partner to partner

Ranked proposals due at Gemini: 22 Nov ITAC: 13 Dec Semester 2001A runs 1 Feb - 31 July

Top-Level Operational Constraints for 2001A

All capabilites are made available in shared-risks mode Baseline instrument availability

Facility: NIRI Visitor: Hokupa’a+QUIRC, OSCIR Not CIRPASS, GMOS, other visitor instruments

Operational modes Queue Classical May also be partner-run service mode Queue & classical modes schedules as blocks

Permit observations of non-sidereal objects 30-50% engineering time

Planned 2001A Phase II Preparation

Require Observing Tool (OT) for NIRI queue observations Must contain high level of functionality to minimise

support staff effort• Define NIRI, GCAL and telescope configurations• Define telescope sequences• Field, position sequence and time visualisation• Develop OT library content of commonly-executed

configurations, sequences and calibrations to ease user learning curve

Beta-2 version was tested extensively; required development is well-understood

Require database to hold Phase II programs with simple query and reporting capabilities

Observing ToolBeta-2 Features

Target, offset and WFS positions, including graphical representations.

Detailed representation of NIRI OIWFS and vignetting.

Gemini Requirements Update

Available instruments semester 2001A: NIRI - near infrared OIWFS most likely only at f/14 UH AO - no OIWFS, NGS limiting magnitude R~16 OSCIR - no OIWFS GMOS CIRPASS - no OIFWS

Semester 2001A Proposals deadline was 30 September 2000. Use of

GSC1 Phase-II we expect to use GSC2

Gemini Requirements Update

Until final delivery of GSC 2.2 (January 2001), we will continue to use a combination of GSC 1, GSC2.1.X, USNO and Hipparcos/Tycho to support guide star selections in future semesters.

Once GSC 2.2 is delivered, it will be made available via our server to successful queue/classical observers, i.e. those who have been awarded time and are in Phase II.

AO programs require good astrometrics, proper motions, and classification to select adequate AOGS: R<16-17 with known proper motions and not too extended.

DSS II CADC delivered two copies in one band (red) to Gemini

~August 1999 Gemini does not have a large enough jukebox to house

all DSS II disks. Working a deal with NOAJ. ~1/3 of DSSII is installed in Subaru jukebox and

accessible via our secure network to Gemini since May 2000.

MOU has been signed two weeks ago by Directors of Subaru and Gemini. Green light (lawyers) to load rest of CDROMs in Subaru jukebox in early November.

For political reasons, good to have % of sky covered. From users perspective: quick way of knowing if area is

included in delivered survey.

GSC II

Delivery to Gemini started September 1999 Still not widely used within Gemini because of

decrease sky coverage compared with existing catalogs (GSC1, USNO, 2MASS). “Customers” (read: proposal writers and observers) prefer to use catalogs that will provide them with all sky coverage.

Fluxes in standard photometric system. For political reasons: good to know % of sky

covered. From an users perspective: Useful to know if

star/area is contained in delivered catalog (maybe a mute point now but…)