P. Wizinowich & D. Le Mignant for Keck AO Team AOWG – June 6, 2002 Keck AO Overview to support summit tour

Keck AO Summit Visit  10:30Arrive at summit  Keck telescope summit visit:  Acclimatize in lounge (10 min)  K1 telescope optics (10 min)  K1 AO enclosure (remove covers to look at AO bench components; demonstrate driving components) + DSM + electronics room. (30 min)  K2 dome floor laser room (20 min)  11:40Lunch in K2 lounge  12:15Resume tour  Break into three groups: (30 min)  K2 laser room on elevation ring (only guide + 2 people at a time). PW lead  NIRC2 in K2 AO enclosure.  NIRSPEC on right Nas platform.  Interferometer control room & lab (30 min)  13:20Leave Summit

Keck II Left Nasmyth Platform NIRC2 NIRSPEC or Dual Star Module Elevation Ring Enclosure with roof removed Electronics Racks AO Optics Bench Rails to deck Nasmyth Platform

AO Bench

OBS Motion Control Science Path: Image Rotator (ROT) Instrument fold (ISM) DSM fold (DFB) Filters (KFC) IR ADC (IDC,3) Wavefront Sensor Path: Sodium dichroic (SOD) Field Steering Mirrors (FSM,4) Field Stop (FSS) Pupil Relay Lens (WPS) ND Filters (WND) Lenslet (WLS,2) Camera Focus (WCS) WFS Focus (FCS) Tilt/Acquisition Path: Acquisition Fold (AFM) Acquisition Focus (AFS) Tilt Sensor Stage (TSS,3) Low Bandwidth Sensor (LBS,2) Diagnostics: ND Filters (SND) Color Filters (SFS) Simulator/Fiber Positioner (SFP,3) 25 stages operational on K2 22 on K1 Digital I/O: White light Servo amps Encoders

AO Science Path K1 Image Rotator Tip/tilt Mirror Deformable Mirror OAP1 OAP2 IR Dichroic To NIRC2

Wavefront Sensor Path AOA Camera Video Display Sodium dichroic/beamsplitterField Steering Mirrors (2 gimbals) Camera Focus Wavefront Sensor Focus Wavefront Sensor Optics: field stop, pupil relay, lenslet, reducer optics

Acquisition Path Camera optics: Field & Nikon lens PXL Camera Focus Stage Beamsplitter/mirror Fold mirror Acquisition: plate scale = arcsec/pixel field = 2x2 arcmin Diagnostics: Flip & move Nikon lens plate scale = arcsec/pixel

LGS: Tip/Tilt & LBWF Sensors X,Y,Z stages Tilt Sensor & ND filter wheel Low Bandwidth Wavefront Sensor Opto-mechanics Low noise Photometrics CCD camera

Alignment, Calibration & Diagnostics Wyko Phase Shifting Interferometer: - mounted under bench looking at deformable mirror - also used for alignment Pupil Simulator: - produces Keck telescope f/# & pupil location - pupil mask in collimated beam Source Positioner: -selects between pupil simulator, fiber & sky - fiber has 3 axes Single mode fibers Wyko video display

First Laser Projection 12/01

KECKLASERKECKLASER

Laser

Integration with Science Instruments Name Date: 1 st AO Light Detector (# pixels & type) Plate Scale (arcsec/pixel) Spectral Resol’n Notes KCAM (UCLA) Feb., 1999 (K1 12/00) 256x256 NICMOS N/aFocus stage; 8-position external filter wheel; J,H,K’ internal filters NIRSPEC (UCLA) Feb., 2000 for spectra 1024x1024 InSb low R high R L= 2000 H= magnification provided by 2 achromats on AO bench; to be replaced by reflective optics this year Apr., 2000 for imaging 256x256 PICNIC for slit viewing N/a NIRC2 (Caltech) July, x1024 InSb 0.01, 0.02 & 0.04 ~ 5000 w/ grisms Designed for AO system Interferometer (JPL, CARA) Mar, 2001 Hawaii AO on both Kecks AO Acquis’n Camera Apr., x1024 CCD Photometrics in high res mode N/aOnly tried once, normal=0.134”/pix SHARC (UCLA) 2005? 1024x1024 Rockwell N/aMultiple filters; cold pupil stop OSIRIS (UCLA) 2005?2048x2048 Hawaii to 0.1 per lenslet x64 lenslets OH-Suppression integral field spectrograph

Keck DSM: Initial Install Primary M4 Secondary M4 Fold Mirror Inconel Extraction Beamsplitter Visible Beamsplitter Keck AOB 7’ 5’

Keck Coude Train

Keck Basement

Optics Bench Devices obs eng. screen wfc eng. screen AOA camera Wavefront Controller WFC: AOCP - CAS AO supervisory control Telescope DCS IDL Java User Interface pro files slk autom. units cshow epics channels Software Architecture

OAToolsOATools

Keck Io Video