Annual Instrument Updates

Annual Instrument Updates

The Support AstronomersW. M. Keck Observatory

2011 February 15

The Support AstronomersW. M. Keck Observatory

2011 February 15

photo © B. Schaefer

2

LRISLRIS

Marc KassisLRIS Red III team: Connie

Rockosi, Chris Lockwood, Mike Peck, David Cowley, Bob Kibrick,

Richard Stover

Marc KassisLRIS Red III team: Connie

Rockosi, Chris Lockwood, Mike Peck, David Cowley, Bob Kibrick,

Richard Stover

33

Commissioned LRIS Red IIICommissioned LRIS Red III

Retains all advantages of the first upgrade

Recovered full FOV for multi-slit and imaging programs

Installation was seamless to observers and the schedule

Red Polarimetry mode available again

Retains all advantages of the first upgrade

Recovered full FOV for multi-slit and imaging programs

Installation was seamless to observers and the schedule

Red Polarimetry mode available again VRI false color image of Stephan’s Quintet

44

PerformancePerformance

M67 open cluster photometric measurements

Instrument throughput with 831 line grating

Release Notes Available on the web

M67 open cluster photometric measurements

Instrument throughput with 831 line grating

Release Notes Available on the web

Filter N-stars ZP-mean 1-sigmaI 16 27.80 0.09V 40 27.86 0.02

5

Throughput Time Evolution

Throughput Time Evolution

5

6

CosmeticsCosmetics Sensitivity is

more uniform than original CCDs

Defect map Hot pixels & Traps

(yellow)

Glue voids

Column channel failures (red)

Sensitivity is more uniform than original CCDs

Defect map Hot pixels & Traps

(yellow)

Glue voids

Column channel failures (red)

77

Minor DisadvantagesMinor Disadvantages Slightly higher

RN Readout time 2

min. vs 1.5 min.

Slightly higher RN

Readout time 2 min. vs 1.5 min.

L-Red Vid 1

Vid 2 Vid 3 Vid 4

I 6.1 6.3

II 4.67 3.79 2.97 3.10

III 4.64 4.76 4.54 4.61

• Red Side Gap 30” (+3”)• Linear to ~38,000 ADU • Long slit on Vid 4

88

2010 Minor Upgrades and Problems

2010 Minor Upgrades and Problems

Blue shutter failed and repaired Blue side compass rose shows correct PA Found and repaired flexure in MAGIQ

offset guider folding mirror mount that contributed to 1” drift over a full rotation.

Released Arc and Flat Calibration Tool – similar to DEIMOS.

“On-demand” IQM focusing in regular use.

Blue shutter failed and repaired Blue side compass rose shows correct PA Found and repaired flexure in MAGIQ

offset guider folding mirror mount that contributed to 1” drift over a full rotation.

Released Arc and Flat Calibration Tool – similar to DEIMOS.

“On-demand” IQM focusing in regular use.

99

Slitmask Alignment ToolSlitmask Alignment Tool

Replaces IRAF/xbox

DEIMOS style guider coarse alignment

More efficient mask alignments

Replaces IRAF/xbox

DEIMOS style guider coarse alignment

More efficient mask alignments

1010

2011 Tasks2011 Tasks Slitmask design software upgrades

Disable pickoff mirrors Depiction of LRIS Red and Blue gaps

Long term monitoring of CTE Manual methods Eventually an IPM task

LRIS Red optimization Improve linearity Work with Lick when LRIS is off sky

Adjust alignment of dichroics (blue) and gratings (red)

MAGIQ “continuous focus” mode

Slitmask design software upgrades Disable pickoff mirrors Depiction of LRIS Red and Blue gaps

Long term monitoring of CTE Manual methods Eventually an IPM task

LRIS Red optimization Improve linearity Work with Lick when LRIS is off sky

Adjust alignment of dichroics (blue) and gratings (red)

MAGIQ “continuous focus” mode

NIRSPECNIRSPEC

Jim LykeJim Lyke

12

NIRSPECNIRSPEC

Mixed year for NIRSPEC Thermal NIRSPAO Guiding drift

Upcoming dewar service Cold head replacement Warm pumping to remove ice Changes to fix drift?

Mixed year for NIRSPEC Thermal NIRSPAO Guiding drift

Upcoming dewar service Cold head replacement Warm pumping to remove ice Changes to fix drift?

13

Thermal NIRSPAOThermal NIRSPAO

Multiple reads Lower readnoise

Higher contrast Stable PSF

Multiple reads Lower readnoise

Higher contrast Stable PSF

Lower throughput Smaller pixels Fringing

Lower throughput Smaller pixels Fringing

14

NIRSPAONIRSPAO

Point source sensitivity M-band: ~1.5x higher than NIRSPEC L-band: ~1.8x lower than NIRSPEC

Lifting the campaign mode restriction

Thanks to G. Blake and team for analysis

Point source sensitivity M-band: ~1.5x higher than NIRSPEC L-band: ~1.8x lower than NIRSPEC

Lifting the campaign mode restriction

Thanks to G. Blake and team for analysis

15

NIRSPEC DriftNIRSPEC Drift

Drift of order 1.5”/hr PA mode, annular guider

Direction change with PA Same source, same night

30 min @ PA=3 22 min @ PA=93

Top: Y elongation Bottom: X elongation

4-5 pixels in 30 minutes 0.7–0.9 arcseconds

Larger than historic guiding/nodding issues Wait4center Slitnod widget

Drift of order 1.5”/hr PA mode, annular guider

Direction change with PA Same source, same night

30 min @ PA=3 22 min @ PA=93

Top: Y elongation Bottom: X elongation

4-5 pixels in 30 minutes 0.7–0.9 arcseconds

Larger than historic guiding/nodding issues Wait4center Slitnod widget

Star Centroids: PA=3

-5

-4

-3

-2

-1

0

1

2

3

4

-4 -3 -2 -1 0 1 2 3 4 5 6

SCAM X (pix)

SCAM Y (pix)

Star1

Star2

Star3

Star4

Star5

Star6

Star Centroids: PA=3

-5

-4

-3

-2

-1

0

1

2

3

4

-4 -3 -2 -1 0 1 2 3 4 5 6

SCAM X (pix)

SCAM Y (pix)

Star1

Star2

Star3

Star4

Star5

Star6

Star Centroids: PA=93

-5

-4

-3

-2

-1

0

1

2

3

4

-4 -3 -2 -1 0 1 2 3 4 5 6

SCAM X (pix)

SCAM Y (pix)

Star1

Star2

Star3

Star4

Star5

Star Centroids: PA=93

-5

-4

-3

-2

-1

0

1

2

3

4

-4 -3 -2 -1 0 1 2 3 4 5 6

SCAM X (pix)

SCAM Y (pix)

Star1

Star2

Star3

Star4

Star5

16

Drift InvestigationDrift Investigation

High Observatory priority Tiger Team formed to investigate Tested and cleared:

Telescope Az/El drives Guiding centroiding Gross pointing model

Tested and likely cleared: Pointing origins Rotator alignment to slit Field rotation on annular guider

Still possible issues: Rotator mechanism: slippage? flexure? Rotational alignment of annular guider

May affect large offsets

High Observatory priority Tiger Team formed to investigate Tested and cleared:

Telescope Az/El drives Guiding centroiding Gross pointing model

Tested and likely cleared: Pointing origins Rotator alignment to slit Field rotation on annular guider

Still possible issues: Rotator mechanism: slippage? flexure? Rotational alignment of annular guider

May affect large offsets

17

Data GatheringData Gathering

Tools by S. Kwok

18

NIRSPEC ServiceNIRSPEC Service

Planned 11B service mission Replace cold heads (preventative) Warm pumping to remove ice

Last replaced in 2005 after 6–7 years, and evidence of degradation in performance.

Cold heads run flat out, no margin if performance declines

Planned 11B service mission Replace cold heads (preventative) Warm pumping to remove ice

Last replaced in 2005 after 6–7 years, and evidence of degradation in performance.

Cold heads run flat out, no margin if performance declines

OSIRISOSIRIS

Jim LykeJim Lyke

20

OSIRISOSIRIS

DRP v2.3 released; fewer “bad spaxels.”

OSIRIS is fully calibrated Re-cal needed after K1 move

Deployed a faster DRP machine Grating upgrade waiting on results of

ATI grant

DRP v2.3 released; fewer “bad spaxels.”

OSIRIS is fully calibrated Re-cal needed after K1 move

Deployed a faster DRP machine Grating upgrade waiting on results of

ATI grant

NIRC2NIRC2

Hien TranHien Tran

22

Time Lost to Faults(A good year for NIRC2)

Time Lost to Faults(A good year for NIRC2)

• ~1 hour time lost in 77 nights• < 0.2% of total time

• ~1 hour time lost in 77 nights• < 0.2% of total time

23

Service MissionService Mission

• All filters, including L and Y, in hand • Wollaston Prism not yet available; awaiting results of

ATI proposal• Scheduled for 2011B to install the filters only

• No polarimeter upgrade• ~ 5-week downtime in Sep–Oct• Factor in Galactic Center season, OSIRIS K1

move, MOSFIRE commissioning

• All filters, including L and Y, in hand • Wollaston Prism not yet available; awaiting results of

ATI proposal• Scheduled for 2011B to install the filters only

• No polarimeter upgrade• ~ 5-week downtime in Sep–Oct• Factor in Galactic Center season, OSIRIS K1

move, MOSFIRE commissioning

24

Efficiency ImprovementEfficiency Improvement• NIRC2 data acquisition scripts modified

• Reduce delays due to status checks • Telescope move parallel with data writing to disk

• Example: 25 sec saved for a bxy3 pattern• 15–45 min per night (5%–15% science time)

• “Side effects”: server crash ~ 1–2 times per night• Recovery takes ~5 min• Investigation ongoing• Scripts released to simplify recovery and reversion

• New scripts released on a shared-risk basis• Documentation/trouble-shooting page updated, SAs

trained• quicklook modified to handle faster image outputs

• NIRC2 data acquisition scripts modified• Reduce delays due to status checks • Telescope move parallel with data writing to disk

• Example: 25 sec saved for a bxy3 pattern• 15–45 min per night (5%–15% science time)

• “Side effects”: server crash ~ 1–2 times per night• Recovery takes ~5 min• Investigation ongoing• Scripts released to simplify recovery and reversion

• New scripts released on a shared-risk basis• Documentation/trouble-shooting page updated, SAs

trained• quicklook modified to handle faster image outputs

HIRESHIRES

Scott DahmScott Dahm

26

Current HIRES DemandCurrent HIRES Demand

HIRES use statistics: 2010

158 nights (144 HIRESr / 14 HIRESb) 126 nights (81%) exoplanet searches

2011 (Jan - Jul) 102 nights (88 HIRESr / 14 HIRESb) 60 nights (59%) exoplanet searches

HIRES use statistics: 2010

158 nights (144 HIRESr / 14 HIRESb) 126 nights (81%) exoplanet searches

2011 (Jan - Jul) 102 nights (88 HIRESr / 14 HIRESb) 60 nights (59%) exoplanet searches

27

HIRES UpdateHIRES Update JUL 2010: CCD Controller #1 could not pass diagnostics following power outage on the summit. Restored after reseating all boards and cables. SEP 2010: Successful test of the PSF Scrambler prototype designed and constructed by D. Fischer (Yale) and J. Spronck (Yale).

28

HIRES Future PlansHIRES Future Plans

Server upgrade April 2011

MAGIQ slit-viewing guide camera upgrade late summer 2011

New scrambler prototype

Server upgrade April 2011

MAGIQ slit-viewing guide camera upgrade late summer 2011

New scrambler prototype

ESIESI

Greg WirthGreg Wirth

30

ESI Current StatusESI Current Status

• ESI systems working well overall

• All mechanical stages fine

• Integral Field Unit is performing well and being used

Semester

Nights

2008B 5

2009A 4

2009B 3 (+1 eng)

2010A 7

2010B 13

2011A 8

ESI Usage

DEIMOSDEIMOS

Greg WirthGreg Wirth

32

DEIMOS Current StatusDEIMOS Current Status

DEIMOS continues to perform well overall

No significant operational problems

Effort planned with UCO/Lick on upgrading computers and FCS (flexure compensation system) software

33

Throughput ComparisonThroughput Comparison

LRIS >2x as efficient as DEIMOS at 1μ

LRIS vs. DEIMOS ThroughputG191B2B observed with 830 l/mm gratings

34

AO OperationsAO Operations

Randy CampbellRandy Campbell

3535

AO Ops HighlightsAO Ops Highlights

MLOG, First-on-target progress

Kramer (NSF) report on U.S. Strategic Command coordination

Efficiency improvements Laser pointing improvements EPICS upgrade Aircraft detection: TBAD, ASCAM

MLOG, First-on-target progress

Kramer (NSF) report on U.S. Strategic Command coordination

Efficiency improvements Laser pointing improvements EPICS upgrade Aircraft detection: TBAD, ASCAM

36

TBAD Installed on the Keck Roof

TBAD Installed on the Keck Roof

Tom Murphy Bill ColesUCSD

TBADTBAD

37

6 Year LGSAO Averages6 Year LGSAO Averages

3838

TrendsTrends

3939

Trends, Faults OnlyTrends, Faults Only

HoursPer Night

4040

Science EfficiencyScience Efficiency

HoursPer Night

41

Weather loss by monthWeather loss by month

42

2011 Priorities2011 Priorities

K1LGS Science operations Efficiency Improvements Personnel issues

Train new Laser Tech, and replace Laser Engineer Critical for 2 lasers

AO Support Astronomer Misc problem solving, minor

improvements (punch list) SC Reboot, loops slow to close, UTT CLMP,

focus jumps, etc. K2 laser dye replacement TBAD (and ASCAM?) MLOG

K1LGS Science operations Efficiency Improvements Personnel issues

Train new Laser Tech, and replace Laser Engineer Critical for 2 lasers

AO Support Astronomer Misc problem solving, minor

improvements (punch list) SC Reboot, loops slow to close, UTT CLMP,

focus jumps, etc. K2 laser dye replacement TBAD (and ASCAM?) MLOG

Keck Observatory ArchiveKeck Observatory Archive

Hien TranHien Tran

44

KOA StatusKOA Status NIRSPEC data released (May 2010) Dedicated user interface for PIs

released (right) Listing of all available data in the

archive One-click download of each night’s

data Interface for selecting officials

(SOs) released NIRC2 feasibility study completed NIRC2 MOU signed New user survey completed Over 5 TB download

Eight refereed papers

NIRSPEC data released (May 2010) Dedicated user interface for PIs

released (right) Listing of all available data in the

archive One-click download of each night’s

data Interface for selecting officials

(SOs) released NIRC2 feasibility study completed NIRC2 MOU signed New user survey completed Over 5 TB download

Eight refereed papers

45

KOA Future PlansKOA Future Plans NIRC2 data release (spring 2012; includes level 1 for imaging)

Extracted spectra for NIRSPEC data

Interactive return page that allows sorting and paging of query

results

New weather data CFHT skyprobe

UH All-sky cam

MASS/DIMM

Split-night GUI; also for

ToO programs.

NIRC2 data release (spring 2012; includes level 1 for imaging)

Extracted spectra for NIRSPEC data

Interactive return page that allows sorting and paging of query

results

New weather data CFHT skyprobe

UH All-sky cam

MASS/DIMM

Split-night GUI; also for

ToO programs.

Mainland ObservingMainland Observing

Greg WirthGreg Wirth

47

Mainland Observing StatusMainland Observing Status

Usage continues to be strong

Yale added as first east-coast site

Switch to full-time VNC operation

Usage continues to be strong

Yale added as first east-coast site

Switch to full-time VNC operation

48

Process ImprovementsProcess Improvements

Web form for improved handling of mainland observing requests

Advisory committee held BOF session in conjunction with 2010 KSM; suggestions are being adopted

Web form for improved handling of mainland observing requests

Advisory committee held BOF session in conjunction with 2010 KSM; suggestions are being adopted

ManagementManagement

Bob GoodrichBob Goodrich

50

Personnel ChangesPersonnel Changes

Grant Hill, transition to Summit Lead Al Conrad departed. Hien Tran, new NIRC2 Instrument

Master Recruiting two replacements;

excellent group of applicants. Fourth Night Attendant hired,

Rodney Eisenhour.

Grant Hill, transition to Summit Lead Al Conrad departed. Hien Tran, new NIRC2 Instrument

Master Recruiting two replacements;

excellent group of applicants. Fourth Night Attendant hired,

Rodney Eisenhour.

51

All VNC All The TimeAll VNC All The Time

Now running instrument software under VNC every night.

Allows for mainland eavesdrops or control.

Better troubleshooting, training. ToOs from mainland sites have

nearly instantaneous access to running software.

Now running instrument software under VNC every night.

Allows for mainland eavesdrops or control.

Better troubleshooting, training. ToOs from mainland sites have

nearly instantaneous access to running software.