Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system
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SciMeasure Wavefront Sensor Cameras and their Application in the 5m Palomar Adaptive Optics System. SciMeasure Analytical Systems, Inc. Ray DuVarney, Charlie Bleau, Garry Motter. Emory University, Department of Physics Ray DuVarney*.

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SciMeasure Wavefront Sensor Cameras and their Application in the 5m Palomar Adaptive Optics System

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Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

SciMeasure Wavefront Sensor Camerasand their Application in the5m Palomar Adaptive Optics System

SciMeasure Analytical Systems, Inc.

Ray DuVarney, Charlie Bleau, Garry Motter

Emory University, Department of Physics

Ray DuVarney*

* has a financial interest in SciMeasure Analytical Systems, Inc.

NASA/JPL, Palomar AO Team

Rich Dekany, Mitch Troy, Gary Brack


History

History


Camera system overview

Camera System Overview

RS-170 Video

Data Out

4 12-bit Data Ports

Overflow/handshake Port (SOF/SOL/DRDY)

SEQUENCER

RS-232 Control

FIBER COMM & DATA

REALTIME DISPLAY

GRAPHICS DISPLAY

Halt Signal

VIDEO OVERLAY

DATA CAPTURE

Stopped Status

Camera Control Unit

1.2 Ghz Bi-directional Control/data Fiber-optic Link

Clocks

+5V DIGITAL

CLOCK DRIVERS

PREAMPLIFIER

Biases

±12V ANALOG

FIBER COMM & DATA

CCD

TEC

+24V ANALOG

ANALOG PROCESSOR

CCD Enclosure

Power Supply

Video

Camera Head


Sequencer

Sequencer

ISA Bus Inter-face

Address Bus

Data Bus

15

15

15

8

8

8

8

Programs

Subroutines

Patterns

24

Addr

Mux

32K

Static

RAM

Data

Mux

Addr

Mux

32K

Static

RAM

Data

Mux

Addr

Mux

32K

Static

RAM

Data

Mux

Data

O/P

Ext.

Select & Sync

4-3

7-3

7-3

8-bit

8-bit

32-bit

11-12

8-12

8-12

Address Generator

Address Generator

Address Generator

50 MHz Clock


Sequencer programming

Sequencer Programming

Patterns

Programs

define pattern read_pixel;

#

# t = /turbo, c = /clamp, S = sample, V = *DCAV

# RG IA BS OR xxx t c S CCCC FV xx

# 123 123 123 0123

0 010 010 010 000 0 1 0 1111 01 00; #

0 010 010 010 000 0 1 0 1111 01 00; #

1 010 010 010 000 0 1 0 1111 01 00; #

0 010 010 010 000 0 1 0 1111 01 00; #

0 010 010 010 000 0 0 0 1111 01 00; #

0 010 010 010 000 1 0 1 1111 01 00; #

0 010 010 010 000 1 0 1 1111 01 00; #

0 010 010 010 000 1 0 1 1111 01 00; #

0 010 010 001 000 1 0 1 0000 01 00; #

0 010 010 001 000 1 0 1 0011 01 00; #

0 010 010 001 000 1 0 1 1000 01 00; #

0 010 010 001 000 0 0 1 0100 01 00; #

0 010 010 001 000 0 0 1 1100 01 00; #

0 010 010 001 000 0 0 1 0010 01 00; #

0 010 010 001 000 0 0 1 1010 01 00; #

0 010 010 100 000 0 0 1 0110 01 00; #

0 010 010 100 000 0 0 1 1111 01 00; #

0 010 010 100 000 0 0 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

0 010 010 100 000 0 1 0 1111 01 00; #

end define;

define program 0;# 1100 Hz Nominal

subroutine start_of_frame;

repeat 32;

subroutine read_line;

end repeat;

repeat 2;

subroutine integrate;

end repeat;

end define;

Subroutines

define subroutine read_line;

pattern send_start_of_line1;

pattern shift_line1;

pattern wait10;

pattern shift_pixel17;

pattern read_pixel32;

end define;


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Fiber Link

CAMERA CONTROL UNIT (CCU)

DEMUX

Digital Video Ports

ONBOARD

SEQUENCER

Digital Data Ports

MUX

TRANS-CEIVER

ONBOARD SCAN

CONVERTER

External Sequencer Data

1.2 Ghz Bidirectional Control/data Fiber-optic Link

Gain

Offset

TEMP/VACUUM

STATUS, ETC

DEMUX

CONTROL

Filter

MUX

TRANS-CEIVER

DATA

CLOCKS

CCD Clocks

Clamp

Sample

CAMERA HEAD UNIT (CHU)

Turbo


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Preamplifier Board

Clock Filters

CCD Clocks

A=5

CCD Peltier Pack

Video Outputs

Bias Filters

CCD Biases

75 ohm drivers

Temperature

TEC Filters

TEC Power


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Analog Processor

1 of 4 channels

Turbo

HIGH SPEED SHUNT

2

Filter

2

Gain

TIME CONST. 1 of 4

GAIN 1 of 4

Video

A/D

Data

75 ohms

Clamp

CLAMP

8

Offset

OFFSET

Sample


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Data Output/Display/Capture

Data

Stream

Data Capture Card

Fiber Link Card

INTERNAL SCAN CONVERTER

1 MEGAPIXEL DUAL PORT STATIC RAM

ISA BUS INTERFACE

ISA Bus

RS-422

Realtime

Data

Ports

DEMUX

Data

R

REALTIME SCAN CONVERTER

G

STATIC RAM

RS-170

Video

B

S

Realtime Display Card


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Control Panel


Camera performance

Camera Performance

EEV CCD39 - 64x64 pixel frame size - Read Noise calculated from Photon Transfer curve

MIT/LL CCID19 achieved 6.5 e- @ 1.1 Mpix/sec/port and 600 frames/sec


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Future Camera Overview I

DATA OUTPUT

FIBER COMM/DEMUX

Data Out/Handshake

16-bit Data Ports

SOF/SOL/DRDY

RS-232 Control

CONTROLLER/SEQUENCER

Halt Signal

Stopped Status

Control Unit

160 mm 3U cards

1.2 Ghz Bi-directional Control/data Fiber-optic Link

POWER/BIASES

Clocks

CLOCK DRIVERS

PREAMPLIFIER

FIBER COMM/MUX

Biases

Power Supply

CCD

ANALOG PROCESSOR(S)

12, 14 or 16-bit options

TEC

CCD Enclosure

Video

Camera Head

160 mm 3U cards


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Future Camera Overview II

RS-232 Control

DATA OUTPUT

Halt Signal

CONTROLLER/SEQUENCER

Stopped Status

Clocks

POWER/BIASES

16-bit Data Ports &

SOF/SOL/DRDY

PREAMPLIFIER

CLOCK DRIVERS

Biases

CCD

ANALOG PROCESSOR(S)

12, 14 or 16-bit options

TEC

CCD Enclosure

Video

Power Supply

Camera Head

160 mm 3U cards


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Palomar AO System


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

PALAO Performance


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

PALAO Results


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

PALAO Results

QS Aql (HR 7486) Binary Star with 0.185" Separation

AO Loop Open FWHM = 1.2"

AO Loop Closed FWHM = 0.097" (Strehl = 20%)


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

PALAO Results

Trapezium Cluster in the Orion Nebula

The left image was taken with the AO system off; the seeing was about 1 arcsec. With the AO system locked on Theta 1 Ori C (brightest star), the stellar images were about 0.2" across, with the brightest stars saturated. Each image is represents approximately 40 arcsec x 40 arcsec field.


Scimeasure wavefront sensor cameras and their application in the 5m palomar adaptive optics system

Acknowledgements

  • SBIR Phase I Grant NAS8-97195

  • SBIR Phase II Grant NAS8-98081

  • Jim Beletic and the ESO Optical Detector Team

  • Mike Shao - Director, Interferometry Center of Excellence, NASA/JPL

  • Eric Bloemhof - Mt. Palomar Observatory

  • Horace Dale - Physics Dept, Emory University


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