Readiness Review
Agenda
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Introduction by PI/Project Manager |
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Instrument Overview and Test Results |
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Operational modes |
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Instrument (general) |
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Stages and subsystems |
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Requirements and performance |
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Current status |
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Test results |
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Software |
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Instrument demonstration |
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Physical instrument interfaces |
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Deliverables |
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Documentation |
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Shipping and handling |
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Integration and commissioning plans |
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Observatory readiness |
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Outstanding Issues & Tasks |
DEIMOS Front View
DEIMOS Top View
Slide 5
Slide 6
Operational Modes
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Spectrographic |
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1,200 lines |
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900 lines |
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600 lines |
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Imaging |
Slide 8
Spectrographic
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Band pass of .385 to 1.1 microns |
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Workhorse maximum spectral resolution
of ~1A FWHM |
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Total slit length of 16.3 arcminutes on
the sky |
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Approximately 120 slits per mask |
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Spectroscopic image size of 1.3 px
(FWHM) |
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OH region accessible at 1.0A FWHM |
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Long slit (not delivered) |
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System throughput 29% (no way to test) |
Imaging
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Total direct imaging area of 163
arcmin2 |
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Pixel scale is 0.119 arcseconds per pixel on the sky |
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Direct image size of 0.2 arcsec (FWHM) in B band, 0.13
arcseconds in all others |
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Throughput 40% for direct imaging |
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Instrument General
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Weight – 18,760 lbs in March, 20,000
max |
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Size |
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Flexure & FC System |
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Optical quality |
Size
Size
Size
Flexure
Flexure
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Slider 2 (mirror, direct imaging) |
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X=9 px pk-pk, y=14 px pk-pk |
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Slider 3 (grating) |
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X=20 px pk-pk, y=13 px pk-pk |
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Slider 4 (grating) |
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X=16 px pk-pk, y=9 px pk-pk |
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Slider 3 was predicted by FEA to be the
worst case |
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Marked hysteresis is present depending
on PA rotation direction; working FC system is needed |
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Capture range of FC system (from actual
tests) |
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X=26 px pk-pk, y=21 px pk-pk |
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Slide 17
Slide 18
Slide 19
Flexure - Sources
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Collimator 4 4 |
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Dewar 4 4 |
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Camera 13 13 |
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Grating box 5 5 |
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Grating sliders 6 6 |
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Flexure Control System
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FCS has 26 pixels motion in x direction
(motion of focal plane) |
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FCS has 21 pixels of motion in the y
direction (tilt of the the tent mirror |
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2 -600x1200 CCD in detector plane |
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4 fibers from Cu/Ar light source,
placed in focal plane (attached to slit mask form) |
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Software to be completed after shipping
to HI |
Optical Quality
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The camera is operating 20C above
design temperature, and optical design predicts some coma at the edge of the
field. The predicted length of tails is 9 px. We see 0 to 14 pixels from the
middle to the edge of the field. The tails are present because the camera
focal length is too long at room temperature, and Element 9 is not at the
right place in the converging beam. This induces primarily radial coma that
should go away at 0C. |
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In the center of the field where coma
is not a problem, we see aberrations that are expected by the optical design
(<<2px rms dia). |
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The bottom line on image quality is
that the real test is at the outer part of the FOV, and we will not be able
to say much until we get to HI at 0C. |
Optical Quality
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We have demonstrated a lot of control
over optical aberrations: |
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Radial coma: re-space body 4/ element 9 |
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Lateral coma: moving body 4 in x &
y |
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Focus: move body 4 axially (effect on
radial coma not yet investigated) |
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Focus: presently not far enough back of
dewar window, but collimator can be moved forward to cure this. |
Optical Quality
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Problem |
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The image quality is not stable - the
PSFs correlate with position angle. There is a phase lag of about 90 degrees
depending on which direction you are rotating. This strongly suggests that
the changes in image PSF are related to the moving element in the camera. |
Stages and Subsystems
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Rotation |
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Hatch |
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Slitmask system |
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Collimator |
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Tent mirror/FC Y stage |
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Grating system |
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Camera |
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Filter wheel |
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Shutter |
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Dewar |
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Focus |
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FC X stage |
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LN2 system |
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Detector system |
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CCD controllers |
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Calibration lamps |
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FC light source |
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TV system |
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Electronics enclosures |
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Cladding |
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Hatches and access ports |
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Cable wrap |
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HP temperature system |
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Service connections |
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Carriage mover |
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Kinematic mounts |
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Rotation Specs
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PA drive accuracy ±17 arcsec |
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Slew time through 360: 2 min |
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Driven by a Galil 500-1000c servo motor |
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260/1 harmonic drive |
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12/1 disk/drive wheel |
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DEIMOS Rotation
DEIMOS Rotation
DEIMOS Rotation
Rotation Test Results
Hatch
Slitmask System
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Time to insert slitmask <10 sec |
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Time to change from adjacent slitmasks
<20 sec |
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Time to change from slitmask 1 to
slitmask 13 <60 sec |
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Re-positioning accuracy of slitmask -
+/- .0015 inches x,y & 0.030 z |
Slitmask System
Slitmask System
Slitmask System
Slitmask
Slitmask System
Collimator
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46.3 in dia |
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86.5 in focal length |
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3.45 in thick |
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1.46 in sagitta |
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4 in dia center hole |
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Zerodur |
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Al coated (presently) |
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Holding tolerances |
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X,Y +/- 0.020 inches |
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Theta X,Y +/- 20 arcmin |
Collimator
Collimator
Collimator
Collimator
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Test Results |
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Image motion of +/- 4 pixels |
Tent Mirror
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Approx 15.2 x 17.8x 2 inch zerodur flat |
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Al coated (presently) |
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Moveable in y direction +/- 10 pixels (theta x) |
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+/- 50 arc sec |
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+/- 45 microns pivot to actuator |
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Stable to +/- 30 arcsec |
Tent Mirror
Tent Mirror
Tent Mirror
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Test Results |
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Stable to ? (less than +/- .4 pixels) |
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Motion repeatable to +/- .2 pixels |
Grating System
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3 grating and 1 mirror sliders |
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Gratings individually tiltable and do
not need to be re-tilted to move out of beam |
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All sliders kinematically located in
beam |
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All 3 gratings are replaceable during
daytime servicing |
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Tilt servo drive (3 sliders) |
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Transport servo drive |
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5 clamps (pneumatic) |
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Grating System
Grating System
Grating System
Grating System
Grating System
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TILT STAGE |
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Tilt resolution – 1.4 arcsec |
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Tilt Position repeatability 1.4 arcsec |
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Tilt position stability <<1.4
arcsec |
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TRANSPORT STAGE |
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Position repeatability +/-0.030 in x,y
in |
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Position repeatability +/-0.0005 in z |
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Position stability -+/- 10 arcsec |
Grating System test
results
Camera Optics
Camera Optics
Camera
Camera
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Fully assembled with the 2 adaptor
rings for accommodation of shutter, and filter wheel. Dewar bolts directly to
top ring |
Camera
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Camera installed in DEIMOS |
Filter Wheel
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7 filter positions |
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Servo driven through 50/1 gear box |
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Repeatability +/- 0.040” |
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Filter Wheel and Shutter
Assembly
Filter Wheel Test Results
Shutter
Shutter
Dewar
Dewar
Dewar
Dewar
Dewar
Focus Stage
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+/- 1 mm travel |
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Resolution 5 microns |
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Accuracy +/- 5 microns |
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Test results |
FC X stage
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Travel - +/- 150 microns |
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Resolution – 6 microns |
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Accuracy - +/- 6 microns |
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Test results |
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LN2 System
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24 hr hold time on MK |
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Cool mosaic to –110C on MK |
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Test results |
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22 hrs in SC |
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-100 in SC |
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-90 in few PAs |
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Fabricating new can |
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Greater hold time |
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Better temp control |
New LN2 Can
Detector System
Mosaic
CCD Controller
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8 video boards |
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Separate power chassis |
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On-board UPS (in DEIMOS carriage) |
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Supports 16-amplifiers (dual amp
readout for all 8 ccds) |
FC CCD Controller
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2 video boards |
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On-board UPS |
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Supports 2 amplifiers (single amp
readout for each FC’s ccd) |
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VME Crates
Calibration Lamps
Calibration Lamps
FC Light Source
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2 Cu/Ar lamps |
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Plan to add “white” LED |
TV System Specs
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TV offset guider FOV 3 arcmin2 |
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Minimum TV integration time: 1 sec |
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Maximum TV frame rate: at least 1 per
sec |
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TV par focal with DEIMOS focal plane to
±0.040
in |
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TV CCD 1000 x 1000 px |
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TV dark current = 6 e-/p/s liq cooled |
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TV RO noise = ?? |
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8 TV filter slots |
TV Pickoff Mirror
Electronics Enclosures
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Insulated and thermally controlled |
Cladding
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Al covering, 2 inches of poly
insulation |
Hatches and Access ports
Cable Wrap
HP Temperature System
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HP 34970A |
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27 RTD sensors on instrument |
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8 on drive disk |
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8 on barrel |
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8 on camera |
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3 on grating |
Service Connections
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Glycol supply and return |
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Compressed air (>90 psi) |
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Clean and line 110AC |
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3 pair of fibers |
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2 co-ax |
Carriage Mover
Kinematic Mounts
Software
Instrument Demonstration
Physical Instrument
Interfaces
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Glycol |
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Air |
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110 AC |
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Clean power |
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Line power |
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Network |
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Private net |
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Public net |
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Fiber |
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CCD controllers (2 duplex) |
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TV guide camera (1 duplex) |
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Track and carriage system |
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Carriage interlocks to telescope and
dome |
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Kinematics |
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Deliverables
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Spectrograph including: |
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Main frame |
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Cladding |
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Cable wrap |
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Hand paddles (3 – one for each
controller) |
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Emergency interrupt system |
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Entrance window and hatch |
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Slitmask mechanism |
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Slitmask focal plane form with position
sensors |
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Collimator, cell and cover |
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Collimator counterweight |
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Tent mirror, cover, and cell |
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Piezo mover for tent mirror |
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Aluminum tent mirror (dummy) |
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Barcode scanner for removable elements |
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Internal barcode scanner for slit masks |
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Hatches and removable service ports
(list) |
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Deliverables (page 2)
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Grating system including: |
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3 grating sliders with tilt mechanisms |
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1200 line/mm grating + cell and cover |
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900 line/mm grating + cell and
cover |
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831 line/mm grating + cell and
cover (supplied by the DEEP Project) |
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600 line grating + cell and cover |
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Flat mirror + #slider |
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9-element, 15-inch camera with passive
thermal plate scale compensator; front and rear covers |
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7-position science filter wheel
including: |
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14 cells |
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5 science filters: (6.25” x 6.25”) |
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B |
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V |
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R |
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I |
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Z |
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2-3 order blocking filters (6.25” x
6.25”) |
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At least 1 glass clear “filter”;
possibly 2 such filters |
Deliverables (page 3)
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Science shutter |
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Two adaptor plates between camera and
dewar |
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Cryogenic detector housing including: |
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Dewar window |
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Focus stage |
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X translation stage |
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CCD mosaic with 8 science 2048x 4096
MIT/LL high/rho CCDs and 2, 600x1200 FC CCDs |
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Ion pump and electronics |
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Cold finger |
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Deliverables (page 4)
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Detector cryogenic system including: |
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LN2 reservoir and vacuum ion pump and
electronics |
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Cold finger connection to dewar |
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LN2 fill tube to reservoir |
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Detector electronics |
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CCD controller with 8 video boards for
16 amp readout |
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CCD controller with 2 video boards for
FC CCD readout |
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CCD cabling |
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UPS for CCD controller and detector
system |
Deliverables (page 5)
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TV guider including: |
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8-position filter wheel |
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8 filter holders for TV filter wheel |
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Filters (2” x 2”): |
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B |
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V |
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R |
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I |
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Z |
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x 10 ND |
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x100ND |
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200mm f 1.8 Canon lens |
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TV shutter |
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PXL detector and electronics |
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TV focus mechanism |
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TV fold flat mirror |
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TV offset guider mirror (in focal
plane) |
Deliverables (page 6)
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Calibration lamps and lampholders
including: |
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Pen-Ray mini lamps |
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Kr (2) |
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Xe (2) |
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Ar |
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Ne |
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Hg |
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Zn Pen-Ray |
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Cd Pen-Ray |
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Quartz flat field lamp and separate
power supplies |
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FC light source with: |
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Cu/Ar (2) Photron lamps with separate
power supplies and white light LED |
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4 fibers to focal plane and 4 spares |
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Four FC light feeds in focal plane |
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Deliverables (page 7)
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Carriage mover and control electronics |
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2, 8-channel Galil motion control
modules and amplifiers |
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Rotation motor and gear train |
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Renishaw encoder with two read heads |
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1 Dell diskless computer + Galil motion
control card and amplifier for rotation control |
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HP data logger |
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27 Galil temperature sensors |
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3 cooled electronics vaults, 2 on
rotating cylinder, one on carriage |
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Air filter and control system |
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Counterweights for Side B, to keep
DEIMOS balanced |
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Baffles: |
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Focal plane baffle |
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Grating/mirror baffle |
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Possible front external baffle |
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Deliverables (page 8)
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2 VME crates with Motorola power PC
boards |
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Video signal cables |
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2 Lantronix terminal servers (one on
rotating cylinder, one on carriage) |
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Instrument control computer |
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Data acquisition computer |
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RAID array for data acquisition
computer |
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Slitmask milling infrastructure
(including necessary mods to existing Keck hardware) |
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Deliverables (page 9)
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Software including: |
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Mask design |
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Mask fabrication |
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Mask alignment/object acquisition |
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Mask management (TBD) |
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Spectrograph control |
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Rotation control |
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Detector control |
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Header collection |
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Science data capture |
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Flexure compensation |
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User interfaces/tools removable element
installation |
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Monitoring/logging |
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Database |
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On-line documentation |
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Scripts for instrument calibration |
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Deliverables (page 10)
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Lifting spreader bar for main frame |
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Spare counterweights in case a chassis
needs to be removed |
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Miscellaneous fixtures for the many
complicated setups, too numerous to mention, but we have several cabinets
full (will list later) |
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Tent mirror aluminizing fixturing. |
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Assorted slitmasks with patterns of
slitlets and holes for optical tests |
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Retainers and clamps for securing
various items during shipping (list needed) |
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Grating file for storage |
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Filter file for storage |
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Cart for holding spare gratings during
grating installation/removal |
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Fixtures/slings for
removal/installation of: |
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Camera |
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Tent Mirror |
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Collimator mirror |
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Dewar |
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Deliverables (page 11)
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Spare optical coupling fluid for camera |
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Spare barcode labels for new filters,
gratings |
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Spare barcode labels for slitmasks |
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Spare parts listed separately |
Spares Provided
Spares Provided
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Canon 200 mm f1.8 lens shared with ESI |
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Galil 500-1000c servo motor |
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Galil 50-1000 servo motor |
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Galil DCM-1580 controller shared with
ESI |
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Galil AMP-1140 amp shared with ESI |
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Lambda power supply |
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Rotation computer/controller |
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Rotation drive gear box |
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Bearings for rotation drive/followers |
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Cam followers for kinematics |
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7 science filer holder |
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Set spare Pen-Ray Cal lamps |
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Couplings for all drives |
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Couplant fluid for camera |
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Stage interconnect box(s) |
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Electronic part spares listed on web
page (approx 45 items) |
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SDSU-2 boards shared with ESI |
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Lantronics terminal server |
Documentation
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Electronics schematics (B size,
web-based versions, plus CD copy) (Barry) |
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Stage data (web page) |
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Web-based description of all mechanical
parts and assemblies (Dave C.) |
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Assembly manual, including use of
assembly, lifting and transport equipment (Dave C.) |
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Maintenance manual for mechanical
systems, including general troubleshooting instructions (Vernon, Jack, CARA) |
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Description of all custom
electronic/electrical systems, including general troubleshooting instructions
(Barry, Chris, CARA) |
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Manuals received with purchased parts
(Barry) |
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Documentation (page 2)
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Operations manuals received with
computers bought by DEIMOS (Bob) |
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Software documentation compliant with
KSD-3 (Bob) |
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Zemax files of optical system on CD
plus all available data on optical elements, including reflectivity curves
for gratings, transmission curves for filters, AR coating performance files
from Coherent, and measurements of surface errors when available (Sandy) |
|
Optical alignment procedures (Sandy,
David H , Jack, Vernon) |
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Summary report on optical performance
(image quality, distortion, astrometry, throughput) (Drew/Sandy) |
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Documentation of CCDs (Bob, Richard
Stover) |
|
CCD electronics manual and drawings
(Barry, Chris) |
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FCS electronics manual and drawing
(Barry, Chris) |
Documentation (page 3)
|
|
|
A document on the FC system as a whole
(Sandy) |
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Interface document (Sandy, CARA) |
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PDR document (exists) |
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Mechanical CDR document(exists) |
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Software CDR document(exists) |
|
Pre-ship Review document |
Shipping
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|
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Sea –Matson |
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Air –United Airlines |
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Key dates |
|
Oct 31- container and rack leave Lick |
|
Nov 8- container and rack arrive in
Kawaihae |
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Nov 13- container and rack arrive on
Keck summit |
|
Nov 26- First and second air shipments |
|
Dec 3- third air shipment |
|
|
Shipping
DEIMOS Main Frame
Shipment
DEIMOS Main Frame
Shipment
DEIMOS Shipping - Trucks
|
|
|
Matson will truck the container and
rack to Oakland, and they will arrange for pilot cars and necessary permits |
|
Kona Transport will truck the container
and rack to the summit of Mauna Kea, and they will arrange for pilot cars and
necessary permits |
|
Kona Transport will truck both the
empty container and rack back to Kawaihae |
Shipping -Air
|
|
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Air shipment 1 |
|
Camera and assembly equipment |
|
Air shipment 2 |
|
Collimator |
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Tent mirror |
|
Grating assembly |
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Slitmask assembly |
|
TV Camera and assembly |
|
Filter wheel |
|
Electronics |
|
Instrument computer |
|
Air shipment 3 |
|
Dewar and CCD controllers |
|
Data-taking computer |
|
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Shipping
|
|
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Camera |
|
Air shipped in pieces (4) |
|
Boxes designed to take 20 g shock load |
|
Other Optics |
|
All have appropriate boxes |
|
Dewar and CCD controllers |
|
Dewar and LN2 can have custom boxes |
|
Controllers shipped in Hardigg Cases |
|
Computers |
|
Air shipped in original boxes where
possible |
Air Shipments -Trucks
|
|
|
Lick will truck all shipments to the
airport |
|
Lick will truck camera boxes (air
shipment 1) to the summit |
|
CARA will be asked to transport air
shipment 2 to the summit. Will likely require 2 flat bed trucks |
|
Lick will truck air shipment 3 to the
summit |
Commissioning Plans
Key
Dates
|
|
|
Thurs Nov 8 – DEIMOS arrives in
Kawaihae |
|
Mon Nov 12 – assembly crew arrives (6
people, 4 new) |
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Tues Nov 13 – DEIMOS at summit |
|
Thurs Nov 15 – lift DEIMOS into
Observatory |
|
Sat Nov 17 – everyone home for
Thanksgiving |
|
Mon Nov 26 – crew and two air shipments arrive (require CARA trucks)(8
people) |
|
Mon Dec 3 – third air shipment arrives
(4 more people) |
|
Fri Dec 21 – home for Christmas |
|
|
Commissioning Plans
Key
Dates
|
|
|
Mon Jan 7 – (11 people arrive back in
Hawaii to continue) |
|
Fri Jan 18 – (5 people depart with the
end of major assembly) |
|
Mon Jan 21 – (2 Software people arrive) |
|
Thurs Jan 31 – start of full up
instrument tests |
|
Thurs Feb 28 – first star light |
Commissioning Plans
Commissioning Plans
|
|
|
Maximum # of people in HI for assembly
– 12 |
|
The plan is not to have any one person
in HI for more than 30 days at a time |
|
We will have up to 4 vehicles,
including 3 4x4s |
|
Will bring hoist for smaller lifts |
Commissioning Plans
Lift
into the Dome
|
|
|
Puna Crane |
|
Lift from west side of Observatory,
onto deck |
Commissioning Plans
Sequence
of major events
|
|
|
Lift to rails Nov 15 –Puna
Crane, telescope down for morning |
|
Test carriage system Nov 28, 29 |
|
Complete Camera Ass Dec 6 |
|
Install slitmask sys Dec 6 |
|
Install grating sys Dec 10 |
|
Install inst computer Dec 10 |
|
Install TV Dec 18 |
|
Install camera Jan 11 –need Jib
Crane |
|
Install collimator Jan 15 –need Jib
Crane |
|
Install tent mirror Jan 16 |
|
Install dewar Jan 17 –need Jib
Crane |
|
|
Commissioning Plans
Sequence
of major events
|
|
|
Install rotation drive Jan 18 |
|
Alignment starts Jan 24 |
|
Start full up inst test Jan 31 |
|
First star light Feb 28 |
Commissioning Plans
Slide 126
Slide 127
Slide 128
Slide 129
It could happen
Keck Observatory
Readiness
|
|
|
Extend the N platform |
|
Reinforce N platform |
|
Reinforce N Deck |
|
Design , fabricate and install the
cable boom |
|
Install the N tracks on the DEIMOS
side, and increase rack on deck |
|
Increase the elevation axis telescope
cable wrap (done) |
|
Run air, glycol, co-ax fiber and power
lines to the cable boom |
|
Mount and install DEIMOS computers and
disk drives |
|
Interface control document |
|
Differential Guiding |
|
Configuring of accounts |
|
|
|
Data archive to tape |
|
Telescope interlocks |
|
Cryogen Handling |
|
commissioning and characterization,
image reduction |
|
Documentation of instrument procedures |
|
SW for instrument control and
initialization |
|
Focus procedures |
Outstanding Tasks
Outstanding Tasks
Outstanding Issues