Technical Details
The data are sampled in time approximately every three hours. Since each spacecraft is at a slightly different distance from the Sun, the intensity received by each pixel was normalized to correspond to the intensity one astronomical unit from the Sun using the inverse-square law. The flux was also adjusted for the fact that each pixel captures a different fraction of the light due to their different angular size for each spacecraft. The image from each spacecraft is then reprojected using the World Coordinate System (WCS) routines of the SolarSoft library. Masks were made to smooth the transition where datasets overlap. There are a few gaps in the data, especially near the poles of the Sun, that are filled using data from the previous time step.
Note: This sequence is suitable for animation and visualization purposes but NOT for scientific analysis.", "items": [], "extra_data": {} }, { "id": 350789, "url": "https://svs.gsfc.nasa.gov/3851/#media_group_350789", "widget": "Video player", "title": "", "caption": "", "description": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "items": [ { "id": 326579, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483821, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarSphere304A.0200.jpg", "filename": "solarSphere304A.0200.jpg", "media_type": "Image", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 4096, "height": 2048, "pixels": 8388608 } }, { "id": 326576, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483819, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarSphere304A.0200_web.png", "filename": "solarSphere304A.0200_web.png", "media_type": "Image", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 320, "height": 160, "pixels": 51200 } }, { "id": 326577, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483820, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarSphere304A.0200_thm.png", "filename": "solarSphere304A.0200_thm.png", "media_type": "Image", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 326580, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483822, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarSphere304A.0200_searchweb.png", "filename": "solarSphere304A.0200_searchweb.png", "media_type": "Image", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 326574, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483817, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarMap_Summer2011_2048.mov", "filename": "solarMap_Summer2011_2048.mov", "media_type": "Movie", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 2048, "height": 1024, "pixels": 2097152 } }, { "id": 326578, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483823, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/solarMap_Summer2011_2048.webmhd.webm", "filename": "solarMap_Summer2011_2048.webmhd.webm", "media_type": "Movie", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 960, "height": 540, "pixels": 518400 } }, { "id": 326575, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 483818, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003851/frames/4096x2048_2x1_30p/", "filename": "4096x2048_2x1_30p", "media_type": "Frames", "alt_text": "This movie is 81 days of satellite data with near complete coverage of the solar sphere.", "width": 4096, "height": 2048, "pixels": 8388608 } } ], "extra_data": {} } ], "studio": "svs", "funding_sources": [ "NASA Heliophysics" ], "credits": [ { "role": "Animator", "people": [ { "name": "Tom Bridgman", "employer": "Global Science and Technology, Inc." } ] }, { "role": "Producer", "people": [ { "name": "Michael Starobin", "employer": "HTSI" } ] }, { "role": "Project support", "people": [ { "name": "Victoria Weeks", "employer": "HTSI" } ] } ], "missions": [ "SDO", "STEREO" ], "series": [], "tapes": [], "papers": [], "datasets": [ { "name": "304 Angstroms", "common_name": "", "platform": "STEREO", "sensor": "Extreme UltraViolet Imager (EUVI)", "type": "Other", "organizations": [], "description": "", "credit": "", "url": "https://stereo.gsfc.nasa.gov", "date_range": "April 1, 2011-June 20, 2011" }, { "name": "304 Filter", "common_name": "AIA 304", "platform": "SDO", "sensor": "AIA", "type": "Other", "organizations": [ "JOINT SCIENCE OPERATIONS CENTER " ], "description": "", "credit": "", "url": "http://jsoc.stanford.edu/", "date_range": "April 1, 2011 - June 20, 2011" } ], "nasa_science_categories": [ "Sun" ], "keywords": [ "Earth Science", "EUV Imaging", "Extreme Ultraviolet Imaging", "Heliophysics", "Science On a Sphere", "SDO", "Solar Activity", "Solar Dynamics Observatory", "Solar Flares", "Solar Ultraviolet", "STEREO", "Sun-earth Interactions" ], "recommended_pages": [], "related": [ { "id": 5136, "url": "https://svs.gsfc.nasa.gov/5136/", "page_type": "Visualization", "title": "STEREO-A Returns by Earth", "description": "The Solar Terrestrial Relations Observatory (STEREO) mission was launched on October 25, 2006, with the purpose of tracing the flow of energy and matter from the Sun to Earth. The STEREO mission began with two spacecraft: STEREO-A and STEREO-B. Each was launched into Sun-orbiting trajectories - STEREO-A moving ahead of Earth, and STEREO-B moving behind Earth (STEREO's Routes to Solar Orbits). In mid-August 2023, the still-operational STEREO-A (STEREO-B went offline in October 2014) will pass Earth for the first time since its launch 17 years ago. Like race cars driving different speeds around a circular track, STEREO-A is traveling slightly faster than Earth around the Sun. After launch, STEREO-A pulled ahead of Earth and extended its lead a little bit more with each orbit. Now, STEREO-A’s lead is so great that it is catching up to Earth from behind and is about to “lap” Earth, having completed 18 circuits around the Sun while Earth completed just 17. || ", "release_date": "2023-08-22T00:00:00-04:00", "update_date": "2025-01-06T00:44:34.491471-05:00", "main_image": { "id": 857695, "url": "https://svs.gsfc.nasa.gov/vis/a000000/a005100/a005136/STEREOflyby.STEREOflybyZoom.GSE.AU.clockSlate_EarthTarget.HD1080.00500_print.jpg", "filename": "STEREOflyby.STEREOflybyZoom.GSE.AU.clockSlate_EarthTarget.HD1080.00500_print.jpg", "media_type": "Image", "alt_text": "A view of the orbit of STEREO-A relative to Earth from mid-June 2023 to mid-October 2023, as it passes Earth. The camera is anchored on the Earth-Sun line so Earth and the Sun appear fixed while the distant stars appear to move around the camera. This movie starts with a wide view of the inner solar system with STEREO-A and Earth marked. The camera then zooms in to a closer view of Earth showing Solar Dynamics Observatory (SDO) orbiting Earth, the heliophysics missions orbiting the L1 Lagrange Point (the green cross), and the orbit of the Moon.", "width": 1024, "height": 576, "pixels": 589824 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }