EEV CCD39 wavefront sensor cameras for AO and interferometry

SciMeasure Analytical Systems, Inc.Ray DuVarney, Charlie Bleau, Garry Motter

Emory University, Department of PhysicsRay DuVarney*

NASA/JPL, Interferometry Systems GroupRich Dekany, Mitch Troy, Gary Brack,

Thang Kieu, Dean Palmer

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

NASA/JPL, Interferometry Metrology GroupStuart Shaklan, Andy Kuhnert

Camera System Overview

Camera Control Unit

Power Supply

Camera Head

CCD Enclosure

Clocks

Biases

TEC

Video

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

RS-232 Control

Halt Signal

RS-170 Video

Data Out

4 12-bit Data Ports

Overflow/handshake Port (SOF/SOL/DRDY)

Stopped Status

FIBER COMM & DATA

REALTIME DISPLAY

GRAPHICS DISPLAY

VIDEO OVERLAY

DATA CAPTURE

SEQUENCER

+5V DIGITAL

±12V ANALOG

+24V ANALOG

CLOCK DRIVERS

FIBER COMM & DATA

ANALOG PROCESSOR

PREAMPLIFIER

CCD

4-3

Sequencer

Address Bus

Data Bus

Programs Subroutines Patterns

11-12 8-12 8-12

15 15 158 8

24

8

8-bit 8-bit 32-bit

8

7-3 7-3

Address Generator

Addr

Mux

32K

Static

RAM

Data

Mux

Addr

Mux

32K

Static

RAM

Data

Mux

Addr

Mux

32K

Static

RAM

Data

Mux

Address Generator

50 MHz Clock

ISA Bus Inter-face

Data

O/P

Address Generator

Ext.Select & Sync

Sequencer Programming

Programs

Subroutines

Patterns

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;

define subroutine read_line;

pattern send_start_of_line 1; pattern shift_line 1; pattern wait 10; pattern shift_pixel 17; pattern read_pixel 32;

end define;

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;

Analog Processor

8

2

2

Sample

Offset

Clamp

VideoGain

Filter

Turbo

Data

1 of 4 channels

75 ohms

HIGH SPEED SHUNT

TIME CONST. 1 of 4

GAIN 1 of 4

CLAMP

OFFSET

A/D

Control Panel

Noise(e-)

Pixel Rate(/sec/port)

Frame Rate(/sec)

3.0 @ 80 kpix 50

3.5 @ 178 kpix 110

5.9 @ 1.14 Mpix 550

7.5 @ 2.00 Mpix 1100

Camera Performance

EEV CCD39 - 64x64 pixel frame size - Read Noise calculated from Photon Transfer curveMIT/LL CCID19 achieved 5.9 e- @ 1.1 Mpix/sec/port and 600 frames/sec

Palomar AO System

OAP2

OAP1

FSM

PHARO

(NEAR-IR

SCIENCE

CAMERA)

FM1

SSM1 (dichr.)SSM2

WFS CAM

DM

LA FS

ADC

FM3

FM2

ACQ CAM

Palomar AO System

PALAO Results

AO Loop Open FWHM = 1.2"

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

QS Aql (HR 7486) Binary Star

with 0.185"

Separation

MAM Vacuum Tank

MAM Vacuum Tank

IIPS MAM Interferometer

CCD

MAM Vacuum Tank

Control Panel

Future Camera Overview I

Control Unit

Power Supply

Camera Head

CCD Enclosure

Clocks

Biases

TEC

Video

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

RS-232 Control

Halt Signal

Data Out/Handshake

16-bit Data Ports

SOF/SOL/DRDYStopped Status

FIBER COMM/DEMUX

POWER/BIASES

CONTROLLER/SEQUENCER

CLOCK DRIVERS

FIBER COMM/MUX

ANALOG PROCESSOR(S)

12, 14 or 16-bit options

PREAMPLIFIER

CCD

160 mm 3U cards

160 mm 3U cards

DATA OUTPUT

Future Camera Overview II

Power SupplyCamera Head

CCD Enclosure

Clocks

Biases

TEC

Video

RS-232 Control

Halt Signal

16-bit Data Ports &

SOF/SOL/DRDY

Stopped StatusPOWER/BIASES

CONTROLLER/SEQUENCER

CLOCK DRIVERS

ANALOG PROCESSOR(S)

12, 14 or 16-bit options

PREAMPLIFIER

CCD

160 mm 3U cards

DATA OUTPUT

Acknowledgements

•SBIR Phase I Grant NAS8-97195

•SBIR Phase II Grant NAS8-98081

•Horace Dale - Physics Dept, Emory University

•Betty Motter - SciMeasure

•Part of the research described herein was carried out at the Jet Propulsion Laboratory, under a contract with the National Aeronautics and Space Administration