overview of the gemini science user...

Overview of the Gemini science user experience

André-Nicolas Chené for the

Gemini Science User Support Department

Proposal

(Peer review)Time allocation

Observations

Programpreparation

Quality controlArchiving

Data reduction

Data analysis

THE LIFE CYCLE OF GEMINI PROGRAMS

Idea

Publication

There are many ways to get time becausethere are many ways to do research!

Regular proposal

Large & Long programs

Fast turnaround

Director Discretionary

TimePoor Weather

When Once per semester

Once per year

Once per month Anytime Anytime

RefereeingNational

Allocation Committees

LLP Program Time Allocation

Committee

Other proposers! (No TAC)

Chief Scientist (John

Blakeslee)

Head of Science

Operation

What for? Routine programs

Large allocation

and/or multi-semester

Immediate, short and/or

follow-up

Special opportunities Bright targets

Observing mode

Queue, Classical,

Priority Visitor

Priority Visitor (Queue

occasionally)Queue Queue Queue

Phase I: Proposal

For “regular” projects

● Submitted during the Calls for Proposals (CfP): in October (A semester) and March (B semester)

● Programs lifetime is 6 months:Feb-Jul for A semester and Aug-Jan for B semester

● Full access to all capabilities

● Classical or Queue

Phase I: Proposal → regular

For projects that require 100s of hours and/or several semesters

● For participating partners (have to reserve 20% of their time)

● Letter of intent required in February, and proposal submitted with the B semester CfP

● Can stay active for up to 3 years!

Phase I: Proposal → LLP

24 publications so far since 2015 on:

Exoplanets Lensed galaxies

Asteroids Low-mass galaxy evolution

Kuiper Belt objects Faint Halo objects

Supernovae Quasars

For rapid response

● Submitted every month (e.g., 26 Feb)

○ Evaluation starts the first of the following month (e.g., 1 Mar)

○ Answer sent the 3rd week (e.g., 15 Mar)

○ Program starts the next month (e.g., 1 Apr)

○ Program ends after 3 month (e.g., 30 Jun)

● All proposers serve as referee

● Limited access to Visiting Instruments

Phase I: Proposal → FT

24 publications so far since 2015 on various topics!

For extraordinary opportunities

● Submitted directly to the Chief Scientist (John Blakeslee)

● High priority programs

● Report on work progress 4 months after observations

● Oversubscription “auto-regulated”

Phase I: Proposal → DDT

‘Oumuamua

Meech et al. (2017)

For when we open on cloudy nights

● Submitted directly to the Head of Science Operation

● For bright targets (typical 2-4m telescope projects)

● For poor seeing (1”) and/or thick clouds (extinc. > 1mag)

● Approved based on schedule

● Best effort basis

Phase I: Proposal → PW

There are many ways to get time becausethere are many ways we do research!

Regular proposal

Large & Long programs

Fast turnaround

Director Discretionary

TimePoor Weather

When Once per semester

Once per year

Once per month

Anytime Anytime

RefereeingNational

Allocation Committees

LLP Program Time Allocation

Committee

Peer reviewed! (No TAC)

Chief Scientist (John

Blakeslee)

Head of Science

Operation

What for?“Business as usual”

Ambitious large or long

projects

Immediate, short and/or

follow-up

Special opportunities

Typically for 2-4 meter-class

Over- subscription

2 5 2 <2 N/A

Weather loss5%10%20%65%

Phase I: Proposal

www.gemini.edu/PIT-tutorial

All the proposals are prepared the same way!

Phase I: Proposal

PIT tutorial material available:

http://www.gemini.edu/PIT-tutorial

I have got a program (in queue mode)! So what?

● Will I get data?

● What should I do now? And when?

● What if something is wrong?

● What if there is something I don’t understand?

● What if there is something I don’t like?

Phase II: Expectations

¯\_(ツ)_/¯

The earlier your program is prepared, the better!


www.gemini.edu/OT-tutorial OT tutorial material available:

http://www.gemini.edu/PIT-tutorial

The likelihood to get data (in queue mode) depends on:

1. Program band (1, 2, 3)

2. Program type (Q, LP, DD, FT, PW)

3. Program restrictions (timing windows, weather, sampling)

4. Program status (ToO, started, intru. configuration, ...)


The likelihood to get data depends on 1. the Band

● Band 1 has absolute priority● Band 3 are “fillers”● Band 2 are successful when

the semester goes well

Phase II: Observations → expectations

Band 3 program are “fillers”

Will only be started if:

● Weather conditions not covered by Band 1 and 2

● RAs not covered by Band 1 and 2

● Has a reasonable chance of getting completed, or a useful

subset of observations can be completed.

● Brownie points for thesis project.

● If it is a GMOS program, it is better the configuration is

commonly used by Band 1 and 2 programs.


The likelihood to get data depends on 2. the program type

DD FT Q LP Others

Band 1

Band 1 Band 1 Band 1

Band 2

Band 2 Band 2 Band 2 ENG

Band 3

Band 4 (PW)


(Priority increases from bottom to top)

NOTE: this is a methodology

The likelihood to get data depends on 2. the program type

● Normal Queue (Q) : Regular queue programs are in Band 1-3 (Band 4 = PW).

● Director's Discretionary (DD) (Bands 1 and 2): Band 1 DD == Band 0.25 Q.

● Fast Turnaround (FT) (Bands 1 and 2): Band 1 FT == Band 0.5 Q.

● Large and Long Programs (LP) (Bands 1 and 2): These behave as normal queue programs and should be scheduled as such, unless there is a priority visitor (PV) run.

● Instrument Monitoring (ENG-###) : These are treated as Band 2.



The likelihood to get data depends on 3. the program restrictions

● Timing Windows: Timing windows matter, and observations can be scheduled in better conditions than requested if needed to try and meet a timing window.

● Time frequency: Same as for Timing Windows, time frequency requirement is followed (after the priority based on the Bands has been considered).

● Weather constraints: ○ Best weather conditions (IQ20%, CC50%) happen 10-15% of the time.

○ Execution in better than requested conditions will on average lead to lower completion rates!

○ Water Vapor and Sky Background restrictions are taken into account.



The likelihood to get data depends on 4. the program status

● Rapid ToOs: Take absolute priority (within their band) when they are triggered.

● Standard ToOs: Need to be done before their timing window ends (days to weeks).

● Current completion: Programs that have been started should get priority over non-started ones, until they reach 80% completion.

● R.A.: Earlier targets take priority if we are about to lose them.

● Instrument configuration: Between two equivalent programs, one can take priority if it needs the same configuration as a higher priority program.

● Visiting instruments programs: Because they are “block scheduled”, they get higher priority when the instrument is on the telescope.

● Known thesis projects: They are completed first



Every night, observing plans are made by the QC, respecting priorities

One plan per possible weather condition!


Be a support astronomer!

www.gemini.edu/GCG

http://www.gemini.edu/GCG

Cloud-based archivearchive.gemini.edu

Phase II: Archiving

https://archive.gemini.edu

I have got data!!! Now, what do I do?

Phase III: Resources

1. Go on www.gemini.edu/DR, and go to “Processing Software” to download and install the Gemini IRAF packages (if you do not have them already)

2. Go back on www.gemini.edu/DR, and click on “Getting Started”3. Select your instrument and visit the different links

Contains documents, examples, cookbooks and/or presentations

4. If this is not satisfactory, open IRAF and load the packagescl> geminigemini> instrument_name

5. Print the example on your screen (see the example)gnirs> gnirsexampleExample to print (longslit|XD|IFU):

6. If you plan to use that script, print the example into a file, and edit the file for your data.

gnirs> gnirsexample > myscript.cl

¯\_(ツ)_/¯

http://www.gemini.edu/

http://www.gemini.edu/DR

Current data processing based on IRAF

Phase III: Software

What the software does and does not do:

● DOES remove detector, instrument, telescope, and atmospheric effect

● DOES process the data in a format ready for science (e.g., raw to x,y,wavelength cube for IFU)

● DOES covers all facility instrument, past and present

● DOES NOT include analysis tools

Phase III: Software

I have a question about my data reduction.What should I do?

No

Phase III: Support

1. Data Reduction (DR) Forum: For help getting started (when tutorials are not available) or help with non-Gemini packages

2. Your Contact Scientist: For help with recently-taken data (might not be the current semester if the data were taken at the end of Jan or Jul)

3. HelpDesk ticket: (www.gemini.edu/help)Everything else

¯\_(ツ)_/¯

Typical delay <1 week.

http://www.gemini.edu/help

I have a question about my data reduction.What should I do?

No

Phase III: Support

If in doubt, email: [email protected]

¯\_(ツ)_/¯

Can be used as a “panic button”. No guarantee on the delays.

For rapid HelpDesk support, please include:

● System information such as

○ Operating system,

○ AstroConda version,

○ Gemini package version

● List of filename of the minimum data set to reproduce the problem, including calibration files

● The exact command you are issuing

● The full input parameter list (from the lpar dump)

Phase III: Support


Proposal


Idea

Publication

Observations

Programpreparation


Data reduction

Data analysis


Proposal


Next Idea

Publication

Observations

Programpreparation


Data reduction

Data analysis

Changes to come:

● DRAGONS data reduction software ○ First release later in 2019○ Only imaging mode for now

● New Gemini website (www.gemini.edu)○ Could come online by the end of 2019

● New HelpDesk system○ Less cumbersome!○ Projected for 2020

● New PIT and OT○ Projected for 2020 and 2021○ Will be delivered with updated documentation

http://www.gemini.edu

Gemini User Support &

Korea Gemini Office (KGO) Operation

The 3rd K-GMT Science Program Users Meeting @ Deajeon, KASI

Drs, Yang, S-C., Lee, H.G., Sheen, Y.K., & Suk, J.H. featured by Lee, J.J.

Chile. NGO

Korea. NGO

Brazile. NGO

Argentina. NGO

U.S. NGO

Canada. NGO

Gemini User Support

Each Gemini Partner runs its own NGO and closely communicates with each other through a bi-weekly online meeting

Gemini User Support & National Gemini Office (NGO)

Roles & responsibilities between Gemini staffs and the National Offices

National Offices

○ Pre-observation (Phase I proposal and Phase II observation prep) and post-observation (data processing) off-site support.

○ First point of contact for user requests, which can be distributed to a wider support network and/or escalated to other National Offices or Gemini staff if necessary (i.e. “HelpDesk”!).

Gemini Staffs

○ Observation execution and on-site support (e.g. via Contact Scientists).

○ Expert support for user requests.


Gemini Helpdesk Structure & Responsibility

https://www.gemini.edu/sciops/helpdesk/submit-general-helpdesk-request

https://www.gemini.edu/sciops/helpdesk/submit-general-helpdesk-request



The Gemini HelpDesk is organised into three levels or tiers.

Tier 1Requests submitted via the HelpDesk are routed to the appropriate NGO. If the NGO is unable to answer the query, then it is escalated to the 2nd level

Tier 2Tier 2 is is organised purely by category and sub-category



The Gemini HelpDesk is organised into three levels or tiers.

Tier 1Requests submitted via the HelpDesk are routed to the appropriate NGO. If the NGO is unable to answer the query, then it is escalated to the 2nd level

Tier 2Tier 2 is is organised purely by category and sub-category

Tier 3The responsibility for tier-3 support in all categories lies with the Gemini Observatory.

Introducing Korea Gemini Office (KGO)

Representing the KGO @ Biweekly meeting, & Operation Working Group Meeting

New & Notables to the Korean Gemini Users

In 2019A

What’s New from 2019A?

Korean observing programs will becarried out as parts of the regular queue mode

from 2019A

No more dedicated Korean observing block!

Available Observing Modes

○ Queue Mode

○ Classical Mode

○ Target of Opportunity (Standard ToO; Rapid ToO)

○ Priority Visitor (PV) Observing dedicated for Large & Long Programs but still available only for Band 1 Queue program if the PIs request.

New Routes of Gemini Proposals from 2019A For the Korean Gemini Users

○ Joint ProposalKorean Gemini users can submit Joint Proposal by collaborating with the PIs of other Gemini international partners.

○ Time Exchange ProgramKorean Gemini users can apply for observing time of the Subaru Telescope through the Time Exchange program.

○ Poor Weather ProgramPoor weather programs will be placed in Band 4, and neither the PI nor partner country will be charged for any time used. Proposals can be submitted at the time of regular Call for Proposal or any time during semester.

○ Fast Turnaround (FT) ProgramFT runs by monthly-based submission and assessment. The total FT time per partner may not exceed 10% of the total partner’s time for a given semester.

Call for Proposals for January 2019 was announced! (Jan 8th)Deadline : Feb 15, 2019

Important Upcoming Schedules for the Gemini Users

Invitation of2019B CfP

Deadline -March 31st

Peer Review

&TAC

Early April

ITAC&

Queue Schedule

June

Phase IIPrep

Mid July

2019BSemester

Aug 1st -Jan 31, 2020

If you have any suggestion, request, comment,and question, don’t hesitate to send us emails to

[email protected]

Thank you & Any Question?

mailto:[email protected]

overview of the gemini science user...

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