A tall, semi-translucent structure emerges from the clean room, carefully guided through an even taller doorway. Inside sits the outer structure (OSD) of the Nancy Grace Roman Space Telescope.
Technicians work around the frame, cleaning and preparing to attach it to a massive crane.
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This is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "items": [ { "id": 476502, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156101, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.01500_print.jpg", "filename": "OSD_to_SES_-_Inside_SES-.01500_print.jpg", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 1024, "height": 540, "pixels": 552960 } }, { "id": 476503, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156102, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.01500_searchweb.png", "filename": "OSD_to_SES_-_Inside_SES-.01500_searchweb.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 476504, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156103, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.01500_web.png", "filename": "OSD_to_SES_-_Inside_SES-.01500_web.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 320, "height": 169, "pixels": 54080 } }, { "id": 476505, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156104, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.01500_thm.png", "filename": "OSD_to_SES_-_Inside_SES-.01500_thm.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 476501, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156100, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.webm", "filename": "OSD_to_SES_-_Inside_SES-.webm", "media_type": "Movie", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 4096, "height": 2160, "pixels": 8847360 } }, { "id": 476243, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156017, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_SES_-_Inside_SES-.mp4", "filename": "OSD_to_SES_-_Inside_SES-.mp4", "media_type": "Movie", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 4096, "height": 2160, "pixels": 8847360 } }, { "id": 476244, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156018, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_to_Space_Environment_Simulator_-_Inside_SES-_ProRes.mov", "filename": "OSD_to_Space_Environment_Simulator_-_Inside_SES-_ProRes.mov", "media_type": "Movie", "alt_text": "Credit: NASA/Sophia RobertsThis is the view from inside the Space Environment Simulator, as the outer portion of the Roman observatory slowly descends into the chamber.", "width": 4096, "height": 2160, "pixels": 8847360 } } ], "extra_data": {} }, { "id": 378276, "url": "https://svs.gsfc.nasa.gov/14852/#media_group_378276", "widget": "Video player", "title": "", "caption": "", "description": "Credit: NASA/Sophia Roberts
Another view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "items": [ { "id": 476506, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156105, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_print.jpg", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_print.jpg", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 1024, "height": 768, "pixels": 786432 } }, { "id": 476507, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156106, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_searchweb.png", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_searchweb.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 476508, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156107, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_web.png", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_web.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 320, "height": 240, "pixels": 76800 } }, { "id": 476509, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156108, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_thm.png", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.00001_thm.png", "media_type": "Image", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 476510, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156109, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.webm", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.webm", "media_type": "Movie", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 5120, "height": 3840, "pixels": 19660800 } }, { "id": 476245, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156019, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.mp4", "filename": "OSD_Moved_into_Thermal_Vac_Chamber_-_Center_GoPro.mp4", "media_type": "Movie", "alt_text": "Credit: NASA/Sophia RobertsAnother view from the very center of the Space Environment Simulator as OSD lowers into the chamber.", "width": 5120, "height": 3840, "pixels": 19660800 } } ], "extra_data": {} }, { "id": 378415, "url": "https://svs.gsfc.nasa.gov/14852/#media_group_378415", "widget": "Video player", "title": "", "caption": "", "description": "Credit: NASA/Scott Wiessinger
A large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "items": [ { "id": 488626, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156492, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.02308_print.jpg", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.02308_print.jpg", "media_type": "Image", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 1024, "height": 682, "pixels": 698368 } }, { "id": 488627, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156493, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.02308_searchweb.png", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.02308_searchweb.png", "media_type": "Image", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 488628, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156494, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.02308_web.png", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.02308_web.png", "media_type": "Image", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 320, "height": 213, "pixels": 68160 } }, { "id": 488629, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156495, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.02308_thm.png", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.02308_thm.png", "media_type": "Image", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 488625, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156491, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.webm", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.webm", "media_type": "Movie", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 4128, "height": 2752, "pixels": 11360256 } }, { "id": 488623, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156490, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Timelapse_-_Tent_Placed_over_OSD_4k.mp4", "filename": "Timelapse_-_Tent_Placed_over_OSD_4k.mp4", "media_type": "Movie", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 4128, "height": 2752, "pixels": 11360256 } }, { "id": 488624, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1156020, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Tent_Placed_over_OSD_-_Middle_View_8k.mp4", "filename": "Tent_Placed_over_OSD_-_Middle_View_8k.mp4", "media_type": "Movie", "alt_text": "Credit: NASA/Scott WiessingerA large, semi-translucent tent is placed over the OSD to protect it from contamination when it's outside the clean room.", "width": 8256, "height": 5504, "pixels": 45441024 } } ], "extra_data": {} } ], "studio": "gms", "funding_sources": [ "PAO" ], "credits": [ { "role": "Producer", "people": [ { "name": "Scott Wiessinger", "employer": "eMITS" }, { "name": "Sophia Roberts", "employer": "eMITS" } ] }, { "role": "Videographer", "people": [ { "name": "Rob Andreoli", "employer": "eMITS" } ] } ], "missions": [ "Nancy Grace Roman Space Telescope" ], "series": [], "tapes": [], "papers": [], "datasets": [], "nasa_science_categories": [ "Universe" ], "keywords": [ "Goddard Space Flight Center", "Nancy Grace Roman Space Telescope", "Telescope", "Thermal Vacuum Chamber" ], "recommended_pages": [], "related": [ { "id": 14852, "url": "https://svs.gsfc.nasa.gov/14852/", "page_type": "Produced Video", "title": "The Roman Space Telescope's Outer Shell Moves to the Thermal Vacuum Chamber", "description": "The outer half of NASA’s nearly complete Nancy Grace Roman Space Telescope just passed a lengthy test to ensure it will function properly in the space environment. This video shows the structure, which consists of the Outer Barrel Assembly, Solar Array Sun Shield, and Deployable Aperture Cover (collectively called OSD), entering the Space Environment Simulator. Technicians removed air from this thermal vacuum chamber and exposed the structure to a wide range of temperatures. || ", "release_date": "2025-06-11T00:00:00-04:00", "update_date": "2025-06-26T11:28:28.247953-04:00", "main_image": { "id": 1156023, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014852/Footage_-_OSD_Moves_to_Space_Environment_Simulator.02760_print.jpg", "filename": "Footage_-_OSD_Moves_to_Space_Environment_Simulator.02760_print.jpg", "media_type": "Image", "alt_text": "Credit: NASA/Rob AndreoliA tall, semi-translucent structure emerges from the clean room, carefully guided through an even taller doorway. 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