SM4 Mission Highlights · 061609_PMB_STUC.ppt. 3. HST SM4 EVA Timeline. Notes: 1. At the end of ACS...

061609_PMB_STUC.ppt 1

Hubble Servicing Mission 4 Highlights and Status

Presentation to

Space Telescope User’s Committee

June 16, 2009Presented by:Preston M. BurchDavid S. Leckrone061609_PMB_STUC.ppt

• WFC3

• COS

• ACS Repair

• STIS Repair

• Instrument Command & Data Handling System

• Gyroscopes

• Batteries

• FGS

• NOBLs

• Soft Capture Mechanism

SM4 Mission OverviewSM4 Mission Overview

HST SM4 EVA Timeline

Notes:1. At the end of ACS Part I, two cards have been removed.2. Aft shroud door open/close for –V2 doors is shorter than for the other doors due to the LOCKs being installed.3. Due to time limitations and mission priorities, ACS Part II is not shown in the timeline since one instrument repair and replacing FGS2

is higher priority than two instrument repairs. ACS Part I task is scheduled to support contingency completion of ACS repair on EVA 5 in the event that the STIS repair is not successful. In that case, FGS would be deleted from EVA 5 and replaced with ACS Part II.

4. If ACS Part II is added to EVA 5, the total task duration for that block would be 2:15. It would be performed after the Bay 3 battery module. The entire EVA would be executed at –V3 forward and would be 6:00.

5. In order to complete ACS during EVA 3, the EVA would have to be extended past 6:30, by as much as 55-60 minutes.061609_PMB_STUC.ppt 3

Hubble Space Telescope Program

Goddard Space Flight Center

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

SI/C&DH

HST Servicing Mission 4 (SM4) Configuration

MISSION GOAL: When the astronauts leave Hubble for the last time, it will be at the apex of its capabilities - better than it has ever been before.

WFC3 + ACS + NICMOS = Most powerful imaging ever

COS + STIS = Full set of tools for astrophysics

The life story of galaxies

The architecture of the universe

Recipes for building planets

The mysteries of dark matter and dark energy

The birth and death of stars

061609_PMB_STUC.ppt 38061609_PMB_STUC.ppt 38

Goddard Space Flight CenterServicing Mission Observatory Verification

Highlights (as of June 12, 2009)

• Cosmic Origins Spectrograph– Completed NUV activation on June 4 – COS-to-FGS Alignment / Coarse Focus conducted June 11, first COS/NUV

external target– FUV activation on-going

• Advanced Camera for Surveys– ACS/WFC CCD cross-talk test planned June 13. First external target

(barred spiral galaxy NGC 6217)– SBC general observer science begins next week

• Wide Field Camera 3– Activation started June 10 following the end of the bright Earth avoidance

period– UVIS and IR detector cool-down completed June 11– First UVIS/IR external target (M81) planned June 16

Goddard Space Flight CenterServicing Mission Observatory Verification

Highlights (as of June 12, 2009) cont’d

• Space Telescope Imaging Spectrograph– CCD checkout completed, general observer science enabled

– FUV MAMA recovery completed

– NUV MAMA recovery in progress

• FGS-2R– Completed planned SMOV activities, final data analysis on-going

• Batteries, Gyros, and NOBLs working nominally

STIS SCIENCE ENABLE

ACS SBC SCI ENABLE

UVIS “EASY” SCI

ACS WFC SCI ENABLE

WFC3 IR “EASY” SCI ENABLE

COS FUV SCI ENABLE, NIC SCIENCE ENABLE (TBD)

WFC3 UVIS/IR “HARD “SCI ENABLE, COS NUV SCI ENABLEFGS2R2

GUIDING

SMOV4 EXTERNAL ORBITS & ENABLE DATES- Including EROs -

May 11, 2009 Launch -- Assumes 55 - 60 prime observing orbits per week

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

SMOV WEEK

EROBEA PERIOD (1st 3 weeks)AVAILABLE SCIENCE ORBITSFGSPCSNICMOSSTISACSCOSWFC3

Note: NICMOS activities will be deferred pending early July attempt to restart the NCS

-- Backup Charts --

High gain antenna

Aperture doorSecondary

mirror

Primary mirror

Equipment Section– Degraded MLI: Install

NOBLs on Bays 5, 7, 8 in SM4

Fine Guidance Sensors– FGS2R: degrading servo LED– FGS3: degrading bearings– Replace one FGS on SM4

Axial Scientific Instruments

– STIS, failed 8/04– STIS Repair on SM4– ACS CCD Imaging

failed 1/07– ACS Repair on SM4– Install COS on SM4

Rate Sensor Units– Gyros 2, 3, and 5 failed:

replace all 6 gyros on SM4

Solar Arrays

Batteries– Charge capacity trending downward;

replace all 6 batteries on SM4Radial Scientific Instrument

– Replace WFPC2 w/ WFC3 on SM4

SI/C&DH– Side-A failure: Replace

Side A&B on SM4

HST Spacecraft Health

SM4 Mission Highlights · 061609_PMB_STUC.ppt. 3. HST SM4 EVA Timeline. Notes: 1. At the end of ACS...

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