AAT Service Observing Programme

PROPOSAL deadlines are 1st March, 1st June, 1st September and 1st December.

News

Rapid switching between UCLES and UHRF is now possible, allowing
more flexible scheduling of the service programmes for both instruments.

There is an alternative AAOmega dichroic available with red/blue
cut-off at 670 nm, extending the spectrograph's reach at the red end.
However, because dichroic changes are not possible during the night, the
original 570 nm dichroic is the default option. A strong case must therefore
be made for using the 670.

AAOmega fld file deadlines of Jan 15, Apr 15, Jul 15 and Oct 15.
have been established for observations executable over the three months
following each date. Fld files not sent by the appropriate deadline will
not be observed during that period. Please send fld files to the
Service Manager.

Key Links for Proposers (and AAO Observers)

Service Proposal Directory: Status of all current programmes in the
queue for each instrument. (Individual proposal files are also available here
for AAO internal access.)
Service Observing Report Form: AAO internal access only.
Observing Report Archive: AAO internal access only.

General Information

Introduction

How to apply

Application forms

AAT service schedules

Service proposal status summaries

Service observing reports

AAOmega/SPIRAL Service Information

Introduction

The Anglo-Australian Observatory operates a service observing programme at the Anglo-Australian Telescope (AAT) for programmes that require up to six hours of observing time. Service time is normally allocated for programmes that require a small amount of data to complete a programme, to look at individual targets of interest, or to try out new observing techniques.

Service proposal deadlines are set four times each year at three-monthly intervals. the deadlines are 1st March, 1st June, 1st September and 1st December . The proposals are graded by a three member panel, a process which takes 3-4 weeks, before being accepted into the service programme.

In detail, the AAT service proposal system operates as follows:

Service proposals may be submitted for programmes that require up to six hours observing time. The following instruments will be available for service observations:

AAOmega
IRIS2
SPIRAL
UCLES
UHRF

A summary of upcoming service nights is given here.
Service proposal deadlines are set at regular 3-month intervals (March, June, September and December).
Service proposals are refereed by a 3-member panel, normally within three to four weeks of the service proposal deadline. The panel consists of an AAO staff member together with one UK and one Australian member of AATAC. If further information is required then a service proposal may be returned to the applicant for modification.
The referees grade service proposals on a scale of 1 (low) to 5 (high) and an average grade is assigned. To ensure service time remains competitive with scheduled AAT programmes, proposals assigned an average grade below 2.5 will not be executed. After a proposal has been refereed, the AAO will advise the sender of the averaged grade assigned by the referees.
Service proposals expire after a period of 18 months but may be resubmitted at any time.
AAOmega fld file deadlines are also at 3-month intervals: Jan 15, Apr 15, Jul 15 and Oct 15 (i.e. approximately 6 weeks following the main proposal deadline). Fld files will need to be submitted via email to the Service Manager by these dates for inclusion in any scheduling during the subsequent three month period.
In addition to service time, a small amount of Director's time may be available for projects which require urgent scheduling, or to try out new programmes. Users who wish to request Director's time should contact the Director by email.
For exceptional events, Target of Opportunity (ToO) observations may be scheduled at short notice, at the discretion of the Director. Users requesting ToO observations should contact the Director by email.
Data will be made available as FITS format files. Wherever possible, these will be transferred to the proposer by anonymous ftp. Alternatively, files will be written to removable storage media.
Information on the current status of service proposals is given in a service proposal status summary.

How to apply for service time

For information on the capabilities and sensitivities of AAT instruments, see the AAO Instruments and Documentation Web page which has links to instrument fact sheets, manuals and guides for proposal preparation .
If you plan to submit an AAOmega or SPIRAL service application then please read the essential AAOmega/SPIRAL Service Information.
If you need further advice then contact the AAO instrument scientist by email.
Fill in the appropriate service proposal application form. This should include a short scientific justification of up to 50 lines.
When ready, submit the form by clicking on the submit button. The information you provide will be emailed to the service proposal manager at the AAO. The AAO will acknowledge receipt of your application and will assign a service proposal number by return email.
If you have any problems with the service proposal system, please contact the Service Manager, by email.

Application forms

Note that WFI is no longer offered in service mode.

AAT service schedules

The schedule of service nights for remainder of 06B and the 07A semester are given below. The full AAT schedule can be found here.

Upcoming AAT Service nights
29 Feb 2008	0.6 (B)	AAOmega
28-29 Mar 2008	0.6 (B) + 0.6 (B)	AAOmega
14 Apr 2008	1.0 (B)	UCLES/UHRF
15-16 Apr 2008	2.0 (B)	IRIS2
27 May 2008	0.3 (G)	AAOmega
29-31 May 2008	1.0 (G) + 2.0 (D)	AAOmega
11 Jul 2008	1.0 (B)	SPIRAL
20-21 Jul 2008	2.0 (B)	IRIS2
22 Jul 2008	1.0 (B)	UCLES
23-24 Jul 2008	0.6 (B) + 0.6 (G)	AAOmega
25-26 Jul 2008	2.0 (G)	AAOmega

AAT service proposal summaries

The following tables provide information on the status of service proposals accepted at the AAT. Please note that service proposals expire after a period of 18 months but may be re-submitted at any time.

Service observing reports

A nightly report is submitted by the AAO astronomer carrying out the service observing, which is normally forwarded to the PI of an observed programme.

Special AAOmega/SPIRAL Service Information

AAOmega is the most complex of all the instruments offered in Service Mode, and is used in two modes:

(1) as a multi-object spectrograph, fed from prime focus, or
(2) as spectrograph for the SPIRAL IFU, and fed from cassegrain focus.

Proposers using AAOmega in either mode should carefully note the following:

Refer to the AAOmega Instrument Page for up-to-date information about the AAOmega and its capabilities. SPIRAL proposers should also consult the separate SPIRAL Instrument Page.
Length: Proposals may be up to 6 hours in length.
Assess Your Competition: Proposals are flexibly scheduled for execution based on proposal grade, instrumental configuration, observing conditions and target availability. You will maximise the chances of your proposal getting executed if your proposal can make use of:
   (1) bright or grey time,
   (2) the most common grating configuration (385R + 580V),
   (3) less popular parts of the sky, and
   (4) less demanding conditions of seeing and transparency.
Proposals adjudged of insufficient merit (ie. grade less than 2.5) will not be implemented. You can check the status of current proposals (and their grades) on the AAOmega Status Page to assess potential competition before you submit.
Preparation: Proposers should consult the guide to Preparing AAOmega Observations. Poorly-formed observing plans and/or observing files can result in programmes missing valuable observing opportunities.
Exposure Times: Proposals should be prepared using either the AAOmega S/N calculator for multi-object spectroscopy programmes, or the SPIRAL S/N calculator for the IFU. The required S/N should also be clearly stated in the proposal, so that exposure times can be adjusted (if necessary) based on latest AAOmega performance.
SPIRAL Position Angles: The default position angle for SPIRAL is 0 degrees. Any change in SPIRAL position angle requires the telescope to be slewed to zenith and changed manually, incurring a 15 minute overhead. New calibration frames are required for each new position angle. Proposers are advised to discuss with the SPIRAL Instrument Scientist any programmes requiring several position angle changes in advance of proposal submission.
Gratings: All gratings are available for either mode. Grating changes are not possible during a night, although grating angles can be changed. Refer to the online AAOmega Grating Calculator.
Fibres: There are 392 science fibres + 8 guide fibres on each plate, for multi-object spectroscopy. Nod-and-Shuffle is enabled for up to 200 fibres, with or without cross-beam switching, but mini-shuffling is not yet enabled. For SPIRAL, various sky subtraction strategies are available depending on the nature of the source and the aim of the observations: please consult the Instrument Scientists for advice, (listed at the bottom).
Proposal Submission: (1) Multi-object spectrosocopy proposals should be submitted using the AAOmega Service Application Form. (2) IFU proposals should be submitted using the separate SPIRAL Service Application Form.
.fld Files: AAOmega uses .fld files for positional information in multi-object spectroscopic runs. We now encourage proposers to submit these at the time of proposal submission, or at least before one of the fld deadlines: Jan 15, Apr 15, Jul 15, Oct 15, for inclusion in scheduling. All fld files should conform to the guidelines on the web page Preparing AAOmega Observations.
SPIRAL Acquisition: The small SPIRAL field-of-view makes finding charts (5 arcmin on a side) indispensible in most cases. This is particularly so for targets that are large and extended and/or very faint. Strategies for blind acquisition off a nearby bright star should be given in these cases.
Queries related to AAOmega should be directed to the Instrument Scientist, Rob Sharp, rgsATaao.gov.au (or Will Saunders, willATaao.gov.au).