There are 2 messages totalling 57 lines in this issue

Topics of the day:

1. STS-125 MCC Status Report #14
2. STS-125 MCC Status Report #15

Date: Mon, 18 May 2009 04:32:31 -0500 From: info@JSC NASA GOV Subject: STS-125 MCC Status Report #14

STS-125 Report #14 Monday, May 18, 2009 - 5:00 a m CDT Mission Control Center, Houston, Texas

As Atlantis’ crew begins their eighth day in space, astronauts Drew Feustel and John Grunsfeld are hours away from conducting the final spacewalk on the Hubble Space Telescope The STS-125 crew awoke this morning to “Sound of Your Voice” performed by Barenaked Ladies It was played for Commander Scott Altman

There are two major focuses for today’s spacewalk The first objective for Feustel and Grunsfeld is the removal of the battery module from Bay 3 on the telescope and the installation of a fresh module Each battery module weighs 460 pounds and contains three batteries Each of the nickel hydrogen batteries weighs 125 pounds, and they provide power to the telescope when it passes into orbital night and the solar arrays are not exposed to the sun All of the batteries on Hubble are original equipment, and they were only designed to operate for five years The batteries in Bay 2 were replaced earlier in the mission

The second task is the removal and replacement of Fine Guidance Sensor (FGS) 2 Hubble has three of these sensors, and FGS 2 has degraded over time The three sensors are parked at 90 degree angles around the circumference of the telescope, and two are used to point and lock the telescope on its targets The third can be used for astrometry, which is measuring the distances between different celestial objects The refurbished FGS that will be installed today previously had been removed and returned on the third servicing mission in December 1999 It has since been enhanced and upgraded

After these two tasks are accomplished, Feustel and Grunsfeld will turn their attention to the New Outer Blanket Layer (NOBL) on the outside of the telescope’s Bay 5 The NOBL on Bay 8 was due to be installed during yesterday’s spacewalk, but the crew was unable to accomplish it during the spacewalk If time permits, Feustel and Grunsfeld may be asked to install a partial or full set of NOBLs on Bay 8 The team in Mission Control will make the decision in real time based on the progress of the spacewalk

The crew’s sleep period will begin at 7:31 p m CDT, and the crew is due to wake up tomorrow at 3:31 a m to begin procedures to release Hubble The next status report will be issued at the end of the crew’s day or earlier if events warrant

-end-

#

NASA Johnson Space Center Mission Status Reports and other information are available automatically by sending an Internet electronic mail message to listserv@listserver jsc nasa gov In the body of the message (not the subject line) users should type "subscribe hsfnews" (no quotes) This will add the e-mail address that sent the subscribe message to the news release distribution list The system will reply with a confirmation via e-mail of each subscription Once you have subscribed you will receive future news releases via e-mail

Date: Mon, 18 May 2009 16:59:01 -0500 From: info@JSC NASA GOV Subject: STS-125 MCC Status Report #15

STS-125 Report #15 5 p m CDT Monday, May 18, 2009 Mission Control Center, Houston, Texas

Human hands have touched the Hubble Space Telescope for the last time Astronauts Andrew Feustel and John Grunsfeld spent seven hours and two minutes putting the finishing touches on the telescope in the final spacewalk from a space shuttle airlock

During the STS-125 mission’s five spacewalks, Atlantis’ crew completed all of the mission objectives to improve Hubble's view of the universe

Over the course of the mission’s five spacewalks, the crew added two new science instruments, repaired two others and replaced hardware that will extend the telescope's life at least through 2014 The five spacewalks lasted 36 hours and 56 minutes all together There have been 23 spacewalks devoted to Hubble, totaling 166 hours and six minutes

The spacewalkers began today’s work early and stepped quickly through the main focus, swapping a battery module from Bay 3 with a fresh module and removing and replacing the Fine Guidance Sensor (FGS) 2

With that work complete, they installed New Outer Blanket Layers (NOBL) on three bays on the outside of the telescope, one of which was a leftover task from Sunday’s spacewalk and the third was a bonus task

About four months of activities are planned for checking out and calibrating the instruments before scientific observations can begin again

The crew’s sleep period will begin at 7:31 p m CDT, and the crew is due to wake up tomorrow at 3:31 a m to begin procedures to release Hubble The next status report will be issued at the beginning of the crew’s day or earlier if events warrant

#

NASA Johnson Space Center Mission Status Reports and other information are available automatically by sending an Internet electronic mail message to listserv@listserver jsc nasa gov In the body of the message (not the subject line) users should type "subscribe hsfnews" (no quotes) This will add the e-mail address that sent the subscribe message to the news release distribution list The system will reply with a confirmation via e-mail of each subscription Once you have subscribed you will receive future news releases via e-mail

End of HSFNEWS Digest - 18 May 2009 to 19 May 2009 (#2009-51)

The following information is a reminder of your current mailing list subscription:

You are subscribed to the following list: [list_name]

using the following email: example@example.com

You may automatically unsubscribe from this list at any time by visiting the following URL:

http://www aus-city com/cgi-bin/dada/mail cgi/u/[list]/

If the above URL is inoperable, make sure that you have copied the entire address Some mail readers will wrap a long URL and thus break this automatic unsubscribe mechanism

You may also change your subscription by visiting this list's main screen:

<[program_url]/list/[list]>

If you're still having trouble, please contact the list owner at:

<mailto:[list_owner_email]>

The following physical address is associated with this mailing list:

[physical_address]