STS-125

Infobox Space mission
mission_name = STS-125
insignia = STS-125 patch.svg
shuttle = Atlantis
shuttlenotes =
launch_pad = LC-39A
launch = TBD
landing = TBD
duration = 11 days
orbits = TBD
altitude = 320 nautical miles (570 km)
inclination = 28.5 degrees
distance =
crew_photo = STS-125 crew portrait.jpg
crew_caption = From left to right : Massimino, Good, Johnson, Altman, McArthur, Grunsfeld and Feustel
previous = STS-126
next = STS-119

STS-125 is a planned Space Shuttle mission which will be the fifth and final servicing mission to the Hubble Space Telescope (HST). The mission will be flown by OV |104, with another shuttle ready to launch in case a rescue mission is needed. STS-125 is currently awaiting a new target launch date following an anomaly aboard the telescope that occurred on September 27, 2008.Cite web|url=http://www.nytimes.com/2008/09/30/science/space/W30hubb.html?ref=us|title=NASA Delays Trip to Repair Hubble Telescope |accessyear=2008|accessmonthday=September 29|publisher=New York Times|year=2008|author=Dennis Overbye] Cite web|url=http://ap.google.com/article/ALeqM5jICfbuGENr5-2mQGNAnAEVCla8yQD93GMLB03|title=NASA delays repair mission to Hubble telescope|accessyear=2008|accessmonthday=September 29|publisher=Associated Press|year=2008|author=Marcia Dunn]

"Atlantis" will carry two new instruments to the HST, in addition to a replacement Fine Guidance Sensor, six new gyroscopes and batteries to allow the telescope to continue to function at least through 2013. The crew will also install a new thermal blanket layer to provide improved insulation, and a "soft-capture mechanism" to aid in the safe de-orbiting of the spacecraft by an unmanned spacecraft at the end of its operational lifespan.

Otherwise known as Hubble Space Telescope Servicing Mission 4 (HST-SM4), the mission will mark the thirtieth flight of Space Shuttle "Atlantis", the last planned manned mission to the space telescope.Cite web|url=http://www.nasa.gov/mission_pages/hubble/news/CDR_review.html|title=NASA Completes Two Important Reviews for Upcoming Hubble Mission|accessyear=2007|accessmonthday=October 16|publisher=NASA|year=2007|author=NASA|language=English] The mission will be the first flight of "Atlantis" since STS-122, and the first flight of "Atlantis" not to visit a space station since STS-66 in 1994. It will be the first Shuttle mission not related to the ISS since STS-107, which ended in the "Columbia" accident.

Due to the large differences between the orbit of the International Space Station and the HST, "Atlantis" will be unable to reach the safe haven of the ISS in the event of its heat shield becoming damaged upon launch. Therefore the mission will require another Space Shuttle to be ready on launch pad 39B for immediate flight on the STS-400 Launch On Need (LON) rescue mission throughout "Atlantis"' mission.

Crew

NASA announced the crew selected for STS-125 on October 31, 2006.Cite web|url=http://www.nasa.gov/home/hqnews/2006/oct/HQ_06343_HST_announcement.html|title=NASA Approves Mission and Names Crew for Return to Hubble|accessyear=2007|accessmonthday=October 16|publisher=NASA|year=2007|author=NASA|language=English]

*Scott D. Altman (4) - Commander
*Gregory C. Johnson (1) - Pilot
*Michael T. Good (1) - Mission Specialist 1
*K. Megan McArthur (1) - Mission Specialist 2
*John M. Grunsfeld (5) - Mission Specialist 3
*Michael J. Massimino (2) - Mission Specialist 4
*Andrew J. Feustel (1) - Mission Specialist 5

Number in parentheses indicates number of spaceflights by each individual prior to, and including this mission.

Crew notes

The crew of STS-125 includes three astronauts who have previous experience with servicing Hubble.Cite web| url=http://www.nasa.gov/mission_pages/shuttle/shuttlemissions/hst_sm4/index.html|title= STS-125: Final Shuttle Mission to Hubble Space Telescope|accessyear=2007|accessmonthday=October 16| publisher=NASA| year=2007|author=NASA| language=English] Altman visited Hubble as commander of STS-109, the fourth Hubble servicing mission in 2002. Grunsfeld, an astronomer, has serviced Hubble twice, performing a total of five spacewalks on STS-103 in 1999, and STS-109. Massimino served with both Altman and Grunsfeld on STS-109, and performed two spacewalks to service the telescope.

Mission parameters

*Mass: TBD
*Perigee: 486 km
*Apogee: 578 km
*Inclination: 28.5°
*Period: 97 min

Mission payloads

STS-125 will carry the "Soft-Capture Mechanism," and install it onto the telescope. [ [http://www.nasa.gov/mission_pages/hubble/servicing/SM4/main/SCRS_FS_HTML.html NASA - Hubble Space Telescope Servicing Mission 4
The Soft Capture and Rendezvous System ] ] This will enable a spacecraft to be sent to the telescope to assist in its safe de-orbit at the end of its life. It is a circular mechanism containing structures and targets to aid docking.

The mission will add two new instruments to Hubble: The Cosmic Origins Spectrograph, which will be the most sensitive ultraviolet spectrograph installed on the telescope.Cite web|url=http://www.nasa.gov/home/hqnews/2007/sep/HQ_07209_Hubble_IMAX.html|title=IMAX Camera Returns to Space to Chronicle Hubble Space Telescope|accessyear=2007|accessmonthday=October 16|publisher=NASA|year=2007|author=NASA|language=English] Its far-UV channel will be 30 times more sensitive than previous instruments and the near-UV will be twice as sensitive. The second instrument, the Wide Field Camera 3, is a panchromatic wide-field camera that can record a wide range of wavelengths, including infrared, visible, and ultraviolet light.

The infrastructure of the telescope will be maintained and upgraded by replacing a "Fine Guidance Sensor" that controls the telescope's directional system, and installing a set of six new gyroscopes, as well as replacing batteries and installing a new outer blanket layer to provide improved insulation.

The payload bay elements are the Super Lightweight InterchangeableCarrier (SLIC) holding the Wide Field Camera 3, new batteries and aradiator; the ORU Carrier with the Cosmic Origins Spectrograph and FGS-3Rinstruments; the Flight Support Structure (FSS) for holding the Hubble during repairs, and the Multi-Use Lightweight Equipment Carrier (MULE) holding support equipment.

Mission background

STS-125 (HST-SM04) was originally assigned to "Discovery", with a launch date no earlier than May 2008. This would move the mission ahead of STS-119, ISS Assembly flight 15A. STS-125 will be the first visit to the Hubble Space Telescope for "Atlantis", although the telescope has been previously serviced twice by "Discovery", and once each by "Columbia" and "Endeavour".

STS-125 was further delayed to October 2008 due to manufacturing delays on external tanks for future space shuttle missions. Lockheed Martin experienced delays during the production changes to make new external tanks with all the enhancements recommended by the Columbia Accident Investigation Board, making it impossible for them to produce two tanks for the STS-125 mission—one for "Atlantis", and one for "Endeavour" for an emergency rescue mission, if necessary—in time for the original August launch date.Cite web |url=http://spaceflightnow.com/shuttle/sts123/080321tanks/index.html |title=Hubble servicing mission's launch date threatened
accessyear=2008 |accessmonthday=March 28 |publisher= [CBS News] |year=2008 |author=William Harwood |language=English]

STS-125 was originally scheduled to be ISS assembly mission ISS-1J. The mission would have delivered the Kibo Japanese Experiment Module (JEM) and JEM's specialized Remote Manipulator System to the station. Columbia was originally planned to fly the fifth Hubble mission, as "Columbia" was not the optimum orbiter for ISS assembly due to the weight of the orbiter.

IMAX movie

At the end of September, 2007, Warner Bros. Pictures and IMAX Corporation announced that in cooperation with NASA, an IMAX 3D camera will travel to the Hubble telescope in the payload bay of Atlantis for production of a new film that will chronicle the story of the Hubble telescope. IMAX has made a number of movies centered around space, including "Destiny in Space", "The Dream is Alive", "Mission to Mir", "Blue Planet", "Magnificent Desolation", and the first trip of IMAX to the ISS in 2001, to make "Space Station 3D".

huttle processing

The crew of Atlantis was at Kennedy Space Center for the Crew Equipment Interface Test in early July, 2008. This allowed the STS-125 crew to get familiar with the orbiter and the hardware they will be using during the flight.

On August 22, 2008, after a delay following Tropical Storm Fay, Atlantis was rolled from the Orbiter Processing Facility to the Vehicle Assembly Building, where it was mated to the external fuel tank and solid rocket booster stack. Problems encountered during the mating process, and delays due to Hurricane Hanna delayed rollout to the pad, which is normally done seven days after rollover.Cite web|url=http://www.spaceflightnow.com/shuttle/sts125/080901hanna|title=Hurricane Hanna delays shuttle's move to pad|accessyear=2008|accessmonthday=September 2|publisher=Spaceflight Now.com|year=2008|author=Spaceflight Now.com] Cite web|url=http://www.aviationweek.com/aw/generic/story.jsp?id=news/ROLL09028.xml&headline=Hurricane%20Chances%20Postpone%20Atlantis%20Rollout&channel=space|title=Hurricane Chances Postpone Atlantis Rollout|accessyear=2008|accessmonthday=September 2|publisher=Aviation Week|year=2008|author=Frank Moring, Jr.]

The first rollout to Launch Pad 39A occurred on September 4, 2008. Atlantis is now due to be rolled back to the Vehicle Assembly Building on October 20 where it will await its new launch date.

Contingency mission

STS-400 is the flight designation given to the Contingency Shuttle Crew Support mission which would be launched in the event "Atlantis" becomes disabled during STS-125.cite news | first=Chris | last=Bergin | coauthors= | title=NASA sets new launch date targets through to STS-124 | date=2007-04-15 | publisher=NASASpaceflight | url =http://www.nasaspaceflight.com/content/?cid=5076 | work = | pages = | accessdate = 2007-08-21 | language = ] To preserve NASA's post-"Columbia" requirement of having shuttle rescue capability, a second shuttle will be on launch pad 39-B at the time of STS-125's launch. This has imposed a constraint on deactivation and conversion of pad 39B for Ares I flight tests. Due to the inclination and other orbit parameters of Hubble, "Atlantis" would be unable to use the ISS as a "safe haven" in the event of structural or mechanical failure.Cite web|url=http://www.nasaspaceflight.com/content/?id=4489|title=Hubble Servicing Mission moves up|accessyear=2007|accessmonthday=October 16|publisher=NASASpaceflight.com|year=2007|author=Chris Bergin|language=English] Cite web|url=http://www.nasaspaceflight.com/content/?cid=4683|title=NASA Evaluates Rescue Options for Hubble Mission|accessyear=2007|accessmonthday=October 16|publisher=NASASpaceflight.com|year=2007|author=John Copella|language=English]

NASA had contingency rescue missions on standby for all nine flights conducted between the fatal "Columbia" flight and STS-125.

ee also

*Space Shuttle program
*List of space shuttle missions

References

External links

* [http://spaceflightnow.com/shuttle/sts125/status.html Up to the minute Mission Status]
* [http://www.spacetelescope.org/about/history/future_servicing_missions.html Hubble Servicing Mission 4 at ESA/Hubble site]
* [http://www.nasa.gov/pdf/161640main_SM4-Mission_Fact%20Sheet%203.pdf Hubble Service Mission Four Factsheet]