STS-61: The Mission That Saved Hubble

This recording captures the countdown and launch preparations for the STS-61 mission, occurring at T minus 3 hours and 11 minutes before liftoff. Notably, it features the crew's final checks and the announcement of a minor issue with TAC hand number one, which had unexplained noise. The crew, including Commander Richard Covey and Mission Specialist Story Musgrave, is highlighted as the most experienced to date, with a combined total of 16 flights. The launch window opens at 4:27 AM, following a scrub due to weather conditions the previous day.

This recording captures the first spacewalk (EVA 1) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. Key tasks included the installation of a work platform on Endeavor's mechanical arm and the successful change out of two rate sensor units on the Hubble Space Telescope, which was completed approximately 45 minutes ahead of schedule. Notably, the crew faced challenges with tool management and communication during the EVA, which lasted over 7 hours and 40 minutes.

This recording captures the first spacewalk (EVA 1) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. Notably, the crew completed the installation of two rate sensor units on the Hubble Space Telescope and was approximately 30 minutes ahead of schedule. The EVA involved significant tool management challenges, including the use of a new Maglite for lighting and discussions about torque settings during the installation process.

This recording captures the first spacewalk (EVA 1) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. Key tasks included the change out of electronic control units on the Hubble Space Telescope, with the crew successfully completing the installation of three units and achieving a torque of 10 on the final unit. The EVA lasted approximately 4 hours and 15 minutes, during which the crew faced challenges with tool management and communication, particularly regarding the torque settings and battery performance of their power tools.

This recording captures the STS-61 EVA1 mission commentary during a spacewalk, featuring astronauts Jeff Hoffman and Story Musgrave as they troubleshoot issues with the Hubble Space Telescope's protective doors. At approximately 6 hours and 20 minutes into the EVA, the crew engages in a complex procedure to close the doors, encountering challenges with alignment and latch engagement. The commentary highlights their teamwork and problem-solving efforts, including the use of tools like the Essex wrench and discussions about the door's mechanical issues.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. The crew successfully installs the Wide Field Planetary Camera 2 on the Hubble Space Telescope, completing the task approximately 30 minutes ahead of schedule. Notably, they conduct an aliveness test on the new camera to confirm its electrical connection, and the EVA lasts about 4 hours and 15 minutes.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. Notably, they successfully install the Wide Field Planetary Camera 2 on the Hubble Space Telescope and conduct an aliveness test to confirm its electrical connection. The EVA is approximately 30 minutes ahead of schedule, with significant discussions regarding torque settings and tool management throughout the operation.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. Notably, they successfully install the Wide Field Planetary Camera 2 on the Hubble Space Telescope and conduct an aliveness test to confirm its electrical connection. The EVA lasts approximately 4 hours and 15 minutes, during which the crew faces challenges with tool management, including a power tool malfunction experienced by Musgrave.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. The crew successfully installs the second magnetometer on the Hubble Space Telescope and conducts an aliveness test, confirming its functionality. The EVA lasts approximately 6 hours and 47 minutes, during which they also prepare for future tasks by loosening bolts on the solar array drive electronics unit.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Story Musgrave and Jeff Hoffman. Key tasks included the installation of the Wide Field Planetary Camera 2 on the Hubble Space Telescope and conducting an aliveness test to confirm its electrical connection. The EVA lasted approximately 4 hours and 15 minutes, with the crew completing the installation ahead of schedule and engaging in significant discussions regarding torque settings and tool management throughout the operation.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Jeff Hoffman and Story Musgrave. The crew successfully installs the Wide Field Planetary Camera 2 on the Hubble Space Telescope and conducts an aliveness test to confirm its electrical connection. Notably, the EVA is completed approximately 30 minutes ahead of schedule, with significant discussions regarding torque settings and tool management throughout the operation.

This press conference covers the evaluation of the Hubble Space Telescope's solar arrays following the second EVA, with discussions led by crew members including Story Musgrave and Jeff Hoffman. Key topics include the condition of the solar arrays, with one showing significant bending and kinks, and the operational procedures for jettisoning damaged arrays. The crew also addressed a minor leak in a spacesuit's water bag, which was resolved during the EVA.

This recording captures the press conference following the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Jeff Hoffman and Story Musgrave successfully installed the Wide Field Planetary Camera 2 on the Hubble Space Telescope. Notably, they conducted an aliveness test on the new camera, confirming its electrical connection. The EVA was completed approximately 30 minutes ahead of schedule, despite challenges with tool management and communication regarding torque settings.

This recording captures the fourth spacewalk (EVA 4) of the STS-61 mission, performed by astronauts Kathy Thornton and Tom Akers. Key tasks included the installation of the Corrective Optics Space Telescope Axial Replacement (CoStar) to enhance Hubble's imaging capabilities, as well as the connection of a new coprocessor to Hubble's computer. The EVA began at approximately 9:45 PM and was notable for Akers holding the all-time record for time spent outside a shuttle crew cabin.

This recording captures the fourth spacewalk (EVA 4) of the STS-61 mission, performed by astronauts Kathy Thornton and Tom Akers, beginning at 9:13 PM Central Time and lasting approximately 6 hours and 50 minutes. The primary tasks included the installation of the corrective optics Space Telescope Axial Replacement (COSTAR) to correct Hubble's mirror flaw and the addition of memory to the telescope's computer. Notably, Tom Akers set a new record for total spacewalk duration, surpassing Gene Cernan's previous record.

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This recording captures the fourth spacewalk (EVA 4) of the STS-61 mission, featuring astronauts Tom Akers and Kathy Thornton. During the EVA, they engage in operations with the CO processor while discussing personal anecdotes, including references to Ken Bowersox's hometown. The crew's focus on safety tether management is also highlighted as they navigate their tasks outside the spacecraft.

This recording captures the post-launch activities of the STS-61 mission, approximately 4 hours after liftoff. Notably, it features the opening of Endeavour's cargo bay doors and the first images sent back to Earth from the shuttle. The crew, including Commander Dick Covey and Mission Specialist Claude Nicolier, prepares for the upcoming rendezvous with the Hubble Space Telescope, with significant discussions about the solar arrays and the mission's complexity. The crew's acclimatization to microgravity and the setup of equipment for the upcoming spacewalks are also highlighted.

This highlights reel captures key moments from the STS-61 mission, including the successful deployment of the Hubble Space Telescope at 1:00:22 and the installation of the redundancy kit for the Goddard High Resolution Spectrograph. Notably, Mission Specialist Jeff Hoffman shares a personal celebration of Hanukkah in orbit, showcasing a traveling menorah. The crew also navigates troubleshooting procedures for the telescope's power systems, with a significant call from Mission Control confirming the telescope's internal power switch at 20 hours.

This highlights reel captures the launch of Endeavour, featuring Commander Dick Covey and Mission Specialist Story Musgrave, who is making his historic fifth flight. Key moments include the successful liftoff at T minus 15 seconds and the deployment of the Hubble Space Telescope, with Mission Control confirming a firm handshake with the telescope. The crew also navigates the complexities of the spacewalk preparations, showcasing the intricate procedures involved in the mission.

This recording captures the final preparations for the STS-61 mission, occurring approximately 12 hours before launch. Notably, Commander Richard Covey discusses the crew's extensive training, totaling over 400 hours in neutral buoyancy, and emphasizes the importance of the mission to repair the Hubble Space Telescope. The crew, with a combined 16 flights, reflects on their readiness and the significance of their upcoming tasks, including multiple spacewalks and the installation of new equipment.

This recording captures the mating of the electrical umbilical to the Hubble Space Telescope during the STS-61 mission. Notably, the crew, including Jeff Hoffman and Story Musgrave, successfully latches the flight support system and connects the umbilical, ensuring power and data transfer to the telescope. The view from the payload bay cameras provides a direct look at the telescope's solar array during this critical operation.

This recording captures the change out of the Wide Field Planetary Camera during the STS-61 mission's EVA, highlighting the crew's practice session for instrument extraction in zero gravity. Notably, the crew members utilize a fixed foot restraint and the robot arm for stabilization while performing the delicate operation. The recording also details the inspection of the telescope's bay and the subsequent alignment and insertion of the new camera, showcasing the complexities of the task.

This recording captures the STS-61 EVA mission commentary during a spacewalk, highlighting astronauts Jeff Hoffman and Story Musgrave as they prepare for and execute the installation of a work platform on Endeavour's mechanical arm at 18 hours, 17 minutes into the EVA. The commentary details their communication and coordination as they troubleshoot issues with the Hubble Space Telescope's rate sensor units, including the successful powering off of the units and the opening of the telescope's protective doors. Notably, the crew navigates challenges with the solar arrays and maneuvers to ensure proper alignment during their tasks.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Jeff Hoffman and Story Musgrave successfully install the new Wide Field Planetary Camera 2 on the Hubble Space Telescope. Notably, Commander Dick Covey adjusts Endeavor's orientation to ensure the camera is in the shade during installation, and the crew completes the task approximately 30 minutes ahead of schedule. The EVA features significant discussions about torque settings and tool management throughout the operation.

This recording captures the installation of the new magnetic sensing systems on the Hubble Space Telescope during the second spacewalk (EVA 2) of the STS-61 mission. Notably, the crew, including astronauts Jeff Hoffman and Story Musgrave, successfully completed the installation while remaining approximately one hour ahead of schedule. The task involved significant coordination with pilot Ken Bowersox operating the robot arm and included an aliveness test of the new units after installation. The crew also prepared for future spacewalks by loosening bolts on the solar array drive electronics unit.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Jeff Hoffman and Story Musgrave successfully install the Wide Field Planetary Camera 2 on the Hubble Space Telescope. Notably, they conduct an aliveness test on the new camera, confirming its electrical connection, and complete the EVA approximately 30 minutes ahead of schedule. The crew also navigates challenges with tool management and torque settings during the installation process.

This recording captures the power-up sequence aboard Endeavour leading to the release of the Hubble Space Telescope, scheduled for 4:26 AM Central Time. Key milestones include the grapple of the telescope by Mission Specialist Claude Nicolier at 1:37 AM and the start of unberthing preparations at 1:47 AM, which involve releasing three latches at 2:00 AM. The crew's activities are focused on ensuring all systems are operational for the upcoming deployment.

This recording captures the countdown and launch preparations for the STS-61 mission, occurring at T minus 2 hours and 12 minutes before liftoff. Notably, Commander Richard Covey reflects on his potential last flight, while Pilot Kenneth Bowersox discusses the integration challenges of the mission. The crew, including Mission Specialist Story Musgrave, prepares for the complex task of servicing the Hubble Space Telescope, emphasizing the importance of the mission due to the telescope's optical issues.

This recording captures the release procedures for the Hubble Space Telescope from the STS-61 mission, occurring approximately 1 hour and 30 minutes into the flight. Notably, Commander Dick Covey and Pilot Ken Bowers maneuver Endeavor to the desired position for release, which occurs at 4:26 AM Central Time. The successful opening of the telescope's aperture door is confirmed just prior to the release, marking a significant milestone in the mission.

This recording features on-orbit mission commentary during STS-61, highlighting a voice check with President Clinton and Vice President Al Gore at approximately 12 hours and 45 minutes into the mission. The crew discusses their pride in the mission's success and the significance of the Hubble Space Telescope repairs, with notable contributions from astronauts Story Musgrave and Claude Nicollier. The commentary emphasizes the international collaboration represented by the crew and the mission's impact on public support for NASA.

This crew debrief focuses on the team's reflections after the successful servicing of the Hubble Space Telescope during STS-61. Notable moments include discussions on the importance of pre-mission training, with Jeff Hoffman emphasizing that thorough preparation was crucial for handling unexpected challenges. The crew also celebrated milestones after each EVA, highlighting their technical focus and teamwork throughout the mission. Additionally, they noted the physical demands of five back-to-back spacewalks and the cumulative fatigue experienced.

This crew debrief focuses on the STS-61 mission's successful servicing of the Hubble Space Telescope, with Richard Covey highlighting the importance of teamwork and preparation. The crew discusses the challenges faced during the mission, including the critical moment of capturing the Hubble, which was successfully completed just at sunset. They reflect on the execution of the EVAs, particularly the replacement of rate gyros, emphasizing the meticulous planning that led to their success.

This recording captures the third spacewalk (EVA 3) of the STS-61 mission, where astronauts Jeff Hoffman and Story Musgrave perform critical tasks including the installation of a work platform on Endeavor's mechanical arm and the change out of two rate sensor units on the Hubble Space Telescope. Notably, the crew successfully completes the installation ahead of schedule, with significant discussions about tool management and communication challenges. The EVA occurs at approximately 11:30 PM Houston time, with the crew managing their suit temperatures and tether configurations throughout the operation.

This recording captures the ongoing second spacewalk (EVA 2) of the STS-61 mission, focusing on the challenges faced by astronauts Jeff Hoffman and Story Musgrave while attempting to close the protective doors over the rate sensor units. Notably, a captive bolt came out of its socket, requiring careful handling and communication with Mission Control to resolve the issue. The crew also prepared for the change out of electronic control units, with discussions about torque settings and tool management throughout the EVA.

This recording captures the unbirthing procedure of the Hubble Space Telescope from Endeavor, occurring approximately 2 hours and 17 minutes before its scheduled release at 4:26 AM. Notably, the crew, including Claude Nicolet, successfully opens three latches to release the telescope from its platform, with Mission Control confirming the telescope's secure capture. The recording also highlights the appreciation shown by Hubble project managers, who sent bouquets of flowers to various consoles in Mission Control.

This recording captures the preparations for the release of the Hubble Space Telescope from Endeavour, occurring at 4:26 AM. Notably, the crew, including Mission Specialist Claude Nicolier, successfully grappled the telescope at 1:30 AM and began unbirthing procedures at 1:47 AM. The recording also details a minor issue with the high gain antenna latching, which was resolved prior to the reboost operation, ensuring the mission's progress remained on track.

This recording captures the successful berthing of the Hubble Space Telescope onto the flight support system during the STS-61 mission. Notably, Mission Specialist Claude Nicollier maneuvers the telescope into position, and the crew secures it using three latches, with the final latch being closed at approximately 30 seconds into the recording. The electrical umbilical is then mated to provide power to the telescope, marking a critical step in the mission's operations.

This recording captures the final approach and capture of the Hubble Space Telescope by Endeavour, occurring at 2:48 AM. Commander Dick Covey manually controls the shuttle during the last stages of the approach, with Mission Specialist Claude Nicolier ready to operate the mechanical arm. The final mid-course correction burn occurs approximately 15 minutes prior to capture, ensuring Endeavour is on the correct trajectory. The successful capture marks a significant milestone in the mission.

This recording captures the troubleshooting efforts during the second spacewalk (EVA 2) of the STS-61 mission, specifically focusing on the challenges faced by astronauts Jeff Hoffman and Story Musgrave while closing the protective doors on the rate sensor units. Notably, the crew successfully engaged the top latch after extensive coordination and adjustments, with Mission Control confirming the successful operation of all six gyros on the Hubble Space Telescope. The EVA lasted approximately 7 hours and 20 minutes, with significant discussions about tool management and door alignment throughout the operation.

This recording captures the launch countdown for STS-61, specifically during the T-minus 3 hour hold. Notably, it includes the crew's preparations, with Commander Richard Covey and Mission Specialist Story Musgrave highlighted as part of the most experienced crew to date. The launch window opens at 4:57 AM, with ascent milestones including liftoff, solid rocket booster separation, and main engine cutoff discussed in the countdown.

This recording features on-orbit mission commentary during STS-61, highlighting the successful capture of the Hubble Space Telescope by astronaut Claude Nicollier using the shuttle's robot arm at approximately 9:57 AM. The commentary details the condition of Hubble's solar arrays, noting a significant kink in one array, and discusses the planned spacewalks for servicing the telescope. Additionally, the crew conducts a routine power down of non-essential systems to conserve electricity.

This recording captures the launch of Endeavor during STS-61, with the countdown window opening at 4:27 AM and lasting until 5:38 AM. Key ascent milestones include liftoff, solid rocket booster separation, and main engine cutoff. Notably, this mission features Commander Richard Covey making his fourth flight and Mission Specialist Story Musgrave making his historic fifth flight. The crew's departure to the pad occurs at 12:57 AM, following a scrub due to weather conditions the previous day.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, performed by astronauts Story Musgrave and Jeff Hoffman. Notably, they successfully retrieve a loose screw from the solar array drive electronics box and install a new electronics unit, demonstrating the capabilities of the shuttle's robotic arm. The EVA features significant discussions about tool management and connector access, with the crew completing their tasks while managing communication challenges and equipment positioning.

This recording captures the fourth spacewalk of the STS-61 mission, where astronauts Kathy Thornton and Tom Akers install the Corrective Optics Space Telescope Axial Replacement (COSTAR) on the Hubble Space Telescope. Notably, Akers sets an all-time record for time spent outside a shuttle crew cabin during this EVA. The spacewalk begins at approximately 9:45 PM and includes the removal of the High Speed Photometer, followed by the installation of the new COSTAR, which is designed to enhance Hubble's imaging capabilities.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Kathy Thornton and Tom Akers replace the solar arrays on the Hubble Space Telescope. Notably, one array is jettisoned due to warping, a task that requires precise maneuvering and coordination, with Thornton operating from the robot arm. The EVA lasts approximately 7 hours and 54 minutes, during which the crew successfully completes multiple tasks ahead of schedule, despite communication challenges faced by Thornton.

This recording captures the jettisoning of the solar array during the STS-61 mission, occurring approximately 34 minutes before sunrise. Notably, Mission Specialist Kathy Thornton holds the array as it is released, with discussions about ensuring proper visibility and safety during the operation. The crew, including Tom Akers and Story Musgrave, coordinate the release while addressing concerns about the array's stability and the need for a safe brake. The array is successfully jettisoned, marking a critical milestone in the mission.

This recording captures the conclusion of the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Jeff Hoffman and Story Musgrave are re-entering the airlock after a 6-hour and 47-minute EVA. Notably, they attempt a battery change on Musgrave's power tool, which had failed during the spacewalk, but find it still non-functional. The crew also prepares for the next day's tasks, including the installation of the COSTAR instrument on the Hubble Space Telescope.

This recording captures the completion of the third spacewalk (EVA 3) of the STS-61 mission, which began at 9:13 PM and concluded at 4:03 AM. Notably, astronauts Tom Akers and Kathy Thornton installed a co-processor on the Hubble Space Telescope, marking a significant upgrade to its onboard computer. The EVA lasted 6 hours and 50 minutes, during which Akers set a new record for total spacewalk duration at 29 hours and 40 minutes, surpassing Gene Cernan's previous record.

This recording captures the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Tom Akers and Kathy Thornton install the Deployable Optical Bench (DOB) of the COSTAR instrument on the Hubble Space Telescope. Notably, the crew successfully navigates challenges with alignment and clearance during the installation process, completing the task approximately 30 minutes ahead of schedule. The EVA lasts about 4 hours and 15 minutes, with significant discussions on torque settings and tool management throughout the operation.

This recording captures the third spacewalk (EVA 3) of the STS-61 mission, where astronauts Story Musgrave and Jeff Hoffman install the Wide Field Planetary Camera 2 on the Hubble Space Telescope. The EVA begins around 9:47 PM, with the crew performing an aliveness test on the new camera and replacing two magnetometers. Notably, the astronauts must handle the delicate camera with extreme care to avoid misalignment, which could worsen Hubble's image quality.

This recording captures the completion of the solar array installation on the Hubble Space Telescope during the STS-61 mission's EVA, with astronauts Kathy Thornton and Tom Akers working together. Notably, they successfully conducted an aliveness test on the new solar arrays, confirming their electrical connections. The EVA lasted approximately 6 hours and 10 minutes, during which the crew faced a minor issue with Kathy's ear pressure during airlock repressurization, requiring a slower rate for safety.

This recording captures the preparations for the second spacewalk (EVA 2) of the STS-61 mission, focusing on the installation of the foot restraint by Tom Akers and Kathy Thornton. Notably, the crew is seen getting ahead on tasks for the upcoming EVA, including discussions about torque settings and tool management. The communication between the crew members and the flight director highlights the operational challenges they face, including a malfunctioning communication system on Kathy Thornton's suit. The recording also notes the solar array's jettisoning, which is approximately 15 miles away from Endeavor.

This recording captures the deployment of the first solar array on the Hubble Space Telescope during the STS-61 mission, with significant discussions about the damping mechanisms designed to prevent wobbling. Notably, the crew, including Story Musgrave and Claude Nicolier, successfully maneuvered the telescope and completed the deployment process, which reached 80% within minutes. The EVA lasted over 7 hours, concluding with the astronauts returning to the airlock after completing all tasks.

This recording captures the troubleshooting and repair efforts during the second spacewalk (EVA 2) of the STS-61 mission, specifically focusing on the replacement of the solar array drive electronics box. Notably, astronauts Story Musgrave and Jeff Hoffman successfully retrieved a loose screw that had fallen during the operation, demonstrating the precision of the shuttle's robotic arm. The crew also faced challenges with torque settings and tool management while ensuring secure connections for the new electronics unit.

This recording captures the installation of the cabling redundancy kit for the Goddard High Resolution Spectrograph during the STS-61 mission's second spacewalk. Notably, Story Musgrave assists Jeff Hoffman from the end of the robot arm, providing stability as Hoffman works in a free-floating position. The crew successfully completes the installation and conducts an aliveness test to confirm electrical connectivity, with a maneuver time set for 23:18 if the doors are not closed by sunset minus 15 minutes.

This recording captures the countdown and launch of the STS-61 mission at T minus 4 minutes, featuring Commander Dick Covey and Mission Specialist Story Musgrave, who is making his historic fifth flight. Notably, the crew dons their flight suits and prepares for launch, with the orbiter access arm being retracted and the shuttle's main engines being gimbaled for final checks. The launch occurs at T minus 15 seconds, marking the beginning of Endeavor's mission to service the Hubble Space Telescope.

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This recording captures the second spacewalk (EVA 2) of the STS-61 mission, where astronauts Story Musgrave and Jeff Hoffman work on the Hubble Space Telescope. Notably, they conduct an aliveness test on the new camera and face challenges with tool management, including a malfunction with the electronic still camera. The EVA lasts approximately 4 hours and 15 minutes, during which they also address jet failures on board Endeavor and adjust their tasks based on ground instructions.

This recording captures the jettison of the solar array from Endeavor during the STS-61 mission, occurring approximately 3 hours and 15 minutes into the EVA. Notably, the crew discusses the procedure for removing the connector rod and addresses a minor issue with the torque limiter during the installation of the solar array. Key participants include Story Musgrave and Commander Richard Covey, who coordinate the tasks and troubleshoot communication challenges throughout the operation.

This recording captures the preparations for the solar array retraction during the STS-61 mission, specifically at 2 hours and 28 minutes into the timeline. Notably, the crew discusses the need for a six-minute sun exposure before initiating the retraction and addresses a redundant FDM stow microswitch failure that affects the operation. Key crew members include Commander Richard Covey and Mission Specialist Story Musgrave, who confirm the readiness for the maneuver and monitor the solar array's condition closely.

This recording features the Hubble Space Telescope Resurfacing Mission operations and Training Workshop, highlighting mission preparations and the introduction of key personnel, including Mission Director Randy Brinkley and Hubble Program Manager Ken Ledbetter. Notably, it discusses the extensive EVA contingency planning and the integration of independent assessment teams, including Colonel Jerry Ross, to enhance mission success. The session emphasizes the importance of thorough training and simulations leading up to the scheduled December launch.

This recording documents a simulation for the third spacewalk of the STS-61 mission, focusing on the replacement of the Wide Field Planetary Camera on the Hubble Space Telescope. Notably, astronauts Jeff Hoffman and Story Musgrave practice procedures at the Neutral Buoyancy Simulation Facility, with Claude Nicolier operating the mechanical arm. The simulation includes a discussion of a potential issue with a port latch on the telescope, which may affect future operations.