James Webb Space Telescope (JWST)Program Status

Mark ClampinJWST Observatory Project ScientistNASA/Goddard Space Flight Center

James Webb Space Telescope (JWST)

2

Organization

Mission Lead: Goddard Space Flight Center Project Scientist: Dr John Mather (Nobel Laureate)

International collaboration: ESA & CSA

Prime Contractor: Northrop Grumman Space Technology Instruments:

― Near Infrared Camera (NIRCam) – Univ. of Arizona

― Near Infrared Spectrograph (NIRSpec) – ESA― Mid-Infrared Instrument (MIRI) – JPL/ESA

― Fine Guidance Sensor (FGS) – CSA Operations: Space Telescope Science Institute

Description

Deployable infrared telescope with 6.5 meter diameter segmented adjustable primary mirror

Cryogenic temperature telescope and instruments for infrared performance

Launch June 2013 on an ESA-supplied Ariane 5 rocket to Sun-Earth L2

5-year science mission (10-year goal)

www.JWST.nasa.gov

JWST Science Themes

End of the dark ages: First light and reionization

The assembly of galaxies

Birth of stars and proto-planetary systems

Planetary systems and the origin of life

UPS Bipod Launch Lock Attachment Points

JWST Sunshield: I

3

Core Region

Momentum Trim Flap

Fixed Spreader Bars at all Locations

JWST Sunshield: II

4

Unitized Pallet Structure (UPS)

Unitized Pallet Structure (UPS)

TelescopicSide Booms

Momentum Trim Flap

Aft UPS Bipod Launch Lock Attachment Points

Sunshield: Deployment

5

Sunshield membrane deployment is now fully managed: sunshield is released and extended one pallet section at a time

Each pallet color represents a sunshield section. They are released one at a time during deployment

Sunshield: Membrane Development

6

JWST Mirror Development

7

% COMPLETE RELATIVE TOL3-TINSLEY OPERATIONS

SLACK IN WEEKS AGAINSTNEED DATE PER M/E

AUGUST 2007 MASTER SCHEDULE

A1

A2

B3

A3

C3

B5

C4

A5

B6

C5

A6

B7

C6

C2

B2

C1

B8

A4

EDU / A-PF -L

20.4 wk

19 wk

16.2 wk

25.4 wk

25.4 wk

25.4 wk

19 wk

35.4 wk

35.4 wk

35.4 wk

19 wk

19 wk

19 wk

19 wk

16.2 wk

16.2 wk

20.4 wk

44.4 wk to PF<1 wk to A1

SM

AT BATC / AXSYS

IN HOUSE / L3 -TINSLEY

EVEN SLICE

FIGURE GRIND, FINE

SMOOTH OUT

POLISH

FINAL AI&T (BATC)

20.4 wk

3.2 wk

FSMTM

36%

47%

34%

31%

31%

44%38%

37%

44%

45%

37%

49%

63%

39%

0%

0%

38%36%

40.2 wk

0%

43%

40%

3.2 wk

0%

C7/C-PF -L

SM/PF -L

48.4 wk

1%

0%

16 wk

COATING (DENTON)

% COMPLETE RELATIVE TOL3-TINSLEY OPERATIONS

SLACK IN WEEKS AGAINSTNEED DATE PER M/E

AUGUST 2007 MASTER SCHEDULE

A1

A2

B3

A3

C3

B5

C4

A5

B6

C5

A6

B7

C6

C2

B2

C1

B8

A4

EDU / A-PF -L

20.4 wk

19 wk

16.2 wk

25.4 wk

25.4 wk

25.4 wk

19 wk

35.4 wk

35.4 wk

35.4 wk

19 wk

19 wk

19 wk

19 wk

16.2 wk

16.2 wk

20.4 wk

44.4 wk to PF<1 wk to A1

SM

AT BATC / AXSYS

IN HOUSE / L3 -TINSLEY

EVEN SLICE

FIGURE GRIND, FINE

SMOOTH OUT

POLISH

FINAL AI&T (BATC)

20.4 wk

3.2 wk

FSMTM

36%

47%

34%

31%

31%

44%38%

37%

44%

45%

37%

49%

63%

39%

0%

0%

38%36%

40.2 wk

0%

43%

40%

3.2 wk

0%

C7/C-PF -L

SM/PF -L

48.4 wk

1%

0%

16 wk

COATING (DENTON)

Primary Mirror

Secondary Mirror

Tertiary Mirror

Fine Steering Mirror

• Flight PM/SM segments are all being figured at Tinsley

• Tertiary and Fine Steering mirror ready for delivery to Tinsley

Mirror sizes to scale

PMSA #13 (8 / A3 / A3) PMSA #18 (21 / C6 / C6)PMSA #17 (23 / B8 / B8)PMSA #16 (19 / A6 / A6)PMSA #15 (18 / C5 / C5)PMSA #14 (22 / B7 / B7)

PMSA #7 (13 / A4 / A4) PMSA #12 (15 / C4 / C4)PMSA #11 (20 / B6 / B6)PMSA #10 (16 / A5 / A5)PMSA #9 (4 / C1 / C1)PMSA #8 (17 / B5 / B5)

PMSA #1 (EDU-A / A1 /A1)

PMSA #5 (6 / B2 / B2) PMSA #6 (7 / C2 / C2)PMSA #3 (12 / C3 / C3) PMSA #4 (5 / A2 / A2)PMSA #2 (11 / B3 / B3)

PM EDU (EDU-B / EDU / EDU) PM PFL-C (24 / C7 / C7) SM PFL (SM2 / SM1 / SM1) SM Flight (SM1 / SM2 / SM2) TM Flight (TM1 / TM1 /TM1)

JWST Mirror Status

8

ATPL in Preparation ofPolishing

SM Pathfinder Light and Flight segments have completed machining at AxsysTechnologies. Processing is beginning at Tinsley Laboratories.

The helium shroud andregeneration systemhas been delivered toBATC and tested downto 6K.

The Aspheric TestPlate Lens andIllumination Lens isnearing completion atTinsley Laboratories.

The SMA Optical GSE Mount andassociated hardware has been builtand assembled at BATC. (ProofLoad Shown)

SM Front SurfaceSM Back Surface

Helium Shroud Installation

Helium Shroud in Fabrication

Illumination Lens in Optical Test

JWST Mirror Status: III

9

EDU Mirror

10

• EDU mirror is on schedule for completion of fine polishing this March

• Cryo-Polish cycle will follow

A4C4

Primary Mirror Backplane

11

• Pathfinder fabrication:

– 118 of 153 billetscompleted throughacceptance

– Piece part fabrication at46% complete

– Billets fabricated includeV1 and drop tubes, flatplates and two T300latch plane V1 tubes

• Flight fabrication:– 34 of the 184 total

flight center sectionbillets are through cure

– Overall center sectionpiece part fabricationat 3%

12

NIRCam ETU Hardware

ZnSe Collimator

BaF2 Camera

Bench panel after anodizing

Filter Wheel Drive Board Focus Mech Drive Board Instrument Control Electronics

13

NIRSpec ETU/Qual Model Hardware

Fore Optics

Optical Bench

Focal Plane Assembly

14

FGS Hardware

ETU Guider Secondary Mirror

Demo Unit Focal Plane

ETU Guider Optical Bench

Prototype Etalon

Primary Mirror Blank

15

MIRI Verification Model

Performing gravity sag test at the Rutherford Appelton Lab, UK

16

ISIM Subsystems

ISIM Structure Thermal Distortion

Test Article

ISIM Electronics Compartment Demo Model

ICDH ETU SpaceWire Card

17

ISIM Structure Harness Mockup

Currently in Bldg 29