1. 27-Apr-2009K. Sembach 1 Servicing Mission 4 - Revisited Ken Sembach STScI Hubble Project Scientist April 27, 2009

2. 27-Apr-2009K. Sembach 2 Photo Credit: Michael Brown, floridatoday.com (September. 20, 2008)

3. 27-Apr-2009K. Sembach 3

4. 27-Apr-2009K. Sembach 4 Photo Credit: NASA (April 17, 2009)

5. 27-Apr-2009K. Sembach 5 Photo Credit: NASA / Kim Shiflett (April 18, 2009)

6. 27-Apr-2009K. Sembach 6 Payload canister lift, Pad 39A (April 18, 2009) Photo Credit: NASA / Kim Shiflett (April 18, 2009)

7. 27-Apr-2009K. Sembach 7 Rescue Orbiter (Endeavor) grapples SM4 Orbiter (Atlantis) Crew Transfer is via EVA Only SM4 crew goes EVA, not LON crew Only SM4 crew goes EVA, not LON crew Atlantis RMS used if available, but not mandatory Atlantis RMS used if available, but not mandatory LON Rescue Mission to SM4 (STS-400)

8. 27-Apr-2009K. Sembach 8 LDRI/IDC WLE and Nose Cap Surveys LDRI prime sensor (No daylight required, sensor has illuminator) IDC “bonus coverage/best effort imagery ” If IDC imagery resolution adequate, then it will be used to clear areas of interest (AOI), thus not requiring dedicated focused inspection. ITVC Tile Acreage Survey Replaces Flight Day 3 “RPM Photography” performed on ISS Missions Totally re-designed contingency tile survey that was originally planned for STS-114 Flight Day 2 Surveys LDRI = Laser Dynamic Range Imager LCS = Laser Camera System IDC = Digital Camera ITVC = Intensified Television Camera Robotic arm extension - Orbiter Boom Sensing System (OBSS) is used.

9. 27-Apr-2009K. Sembach 9 Photo Credit: NASA / Cory Huston (April 3, 2009)

10. 27-Apr-2009K. Sembach 10 Michael Massimino (Mission Specialist) Michael Good (Mission Specialist) Gregory Johnson (Pilot) Scott Altman (Commander) Megan McArthur (Mission Specialist) John Grunsfeld (Mission Specialist) Andrew Feustel (Mission Specialist) STS-125 Crew

11. 27-Apr-2009K. Sembach 11

12. 27-Apr-2009K. Sembach 12 Photo Credit: NASA / Kim Shiflett (March 18, 2009)

13. 27-Apr-2009K. Sembach 13

14. 27-Apr-2009K. Sembach 14 Photo Credit: NASA / Kim Shiflett (April 2, 2009)

15. 27-Apr-2009K. Sembach 15

16. 27-Apr-2009K. Sembach 16 Hubble Servicing Mission 4 Replacement Science Instrument Control & Data Handling Unit Two new science instruments Wide Field Camera 3 (WFC3) and the Cosmic Origins Spectrograph (COS) Replacement of batteries (needed for power during orbital night) Replacement of gyros (used to determine HST pointing) Replacement of one of the three Fine Guidance Sensors (FGS) Repair of the Space Telescope Imaging Spectrograph (STIS) Repair of the Advanced Camera for Surveys (ACS) Replacement of thermal blankets (used to maintain temperature) Installation of Soft Capture Mechanism (SCM) NET May 11, 2009 on Space Shuttle Atlantis (STS-125) Key Elements

17. 27-Apr-2009K. Sembach 17

18. 27-Apr-2009K. Sembach 18 Equipment Bays 5 - 10 Bay 5 Bay 7Bay 8 Bay5Transmitters Solid State Recorders Bays 6, 9 Reaction wheels Bay 7 Various electronics Bay 8 Safing electronics Science tape recorder Retrieval mode gyros Bay 10 SI C&DH Data Interface Unit 5 Electronic Control Units Bay 6Bay 9Bay 10

19. 27-Apr-2009K. Sembach 19 NASA Standard Spacecraft Computer (NSSC-1) Standard Interface (STINT) Memory modules Power Control Unit (PCU) Control Unit / Science Data Formatter (CU/SDF) Remote Interface Unit (RIU) Multiplexed Data Bus (MDB) Science Instrument Control & Data Handling (SI C&DH) Unit on Bay 10 door

20. 27-Apr-2009K. Sembach 20

21. 27-Apr-2009K. Sembach 21

22. 27-Apr-2009K. Sembach 22 SI C&DH2 Ready for Flight (April 2, 2009)

23. 27-Apr-2009K. Sembach 23 Cosmic Origins Spectrograph Wide Field Camera 3 Fine Guidance Sensor Rate Sensor Units Batteries Flight Support System Super Lightweight Interchangeable Carrier Orbital Replacement Unit Carrier Multi-use Logistic Equipment Carrier Soft Capture Mechanism IMAX HST Servicing Mission 4 (SM4) Configuration Airlock

24. 27-Apr-2009K. Sembach 24 SM4 Configuration (side view) Carrier origins with respect to Orbiter origin: SLICORUCFSSMULE Xo = 833.0”Xo = 998.2”Xo = 1075.2”Xo = 1126.33” Yo = 0.0” Zo = 414.0” Zo = 300.0” Orbiter Coordinate System (Xo, Yo, Zo) is orthogonal to all carrier axes.

25. 27-Apr-2009K. Sembach 25 STScI Participation During SM4 SMS generation / scheduling SMS generation / scheduling Preparation of HST for capture and initiation of activities after release Preparation of HST for capture and initiation of activities after release Last data obtained up to launch + a few hours Last data obtained up to launch + a few hours Aliveness/functional test analyses Aliveness/functional test analyses Evaluation of test results (telemetry / science data), anomaly resolution Evaluation of test results (telemetry / science data), anomaly resolution Engineering support Engineering support Telemetry monitoring, anomaly resolution, information and data distribution Telemetry monitoring, anomaly resolution, information and data distribution Project management support at JSC and GSFC Project management support at JSC and GSFC Anomaly resolution, replanning Anomaly resolution, replanning

26. 27-Apr-2009K. Sembach 26 Observatory Support Team Project/JSCProject/GSFCSTOCCSTScI OrbitMountainJenkner/DoxseyLongBlades PlanningHauserSembachWheelerBiagetti WFC3COSSTISACSOrbitHartigPetroLennonShanowGreenPentonMcPhateKaiserOliveiraWoodgate L. Smith LucasCoxDesjardinsGonzaga GSFCSTScIGSFCSTScIGSFCSTScIGSFCSTScI AnalysisMacKentyBushouseBaggettHilbertKeyesFriedmanOstermanBelandFroningAkeYorkGoudfrooijProffittGullLindlerLennonWolfeGolimowskiMutchlerLimMaybhateChiabergeGrogin FGSLalloNelan

27. 27-Apr-2009K. Sembach 27 We’re Ready For Launch! STS-124 Launch (Discovery) on May 31, 2008