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Prominences and filaments are two manifestations of the same phenomenon. Both prominences and filaments are features formed above the chromosphere by cool dense gases held in place by solar...
Search relevance: 118.96 | Views last month: 3 | Catalog Last Checked: August 02, 2026 at 05:22 PM -
A solar flare is a short-lived sudden increase in the intensity of radiation emitted in the neighborhood of sunspots. For many years it was best monitored in the H-alpha wavelength and occurs in...
Search relevance: 105.62 | Views last month: 9 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
Collection includes a variety of solar feature datasets contributed by a number of national and private solar observatories located worldwide.
Search relevance: 103.72 | Views last month: 4 | Catalog Last Checked: August 02, 2026 at 05:22 PM -
The H-alpha Flare Patrol identifies time periods each day when the sun is being continuously monitored by select ground-based solar observatories.
Search relevance: 99.94 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
A Sudden Ionospheric Disturbance (SID) is any of several radio propagation anomalies due to ionospheric changes resulting from solar or geophysical events.
Search relevance: 98.83 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
Daily index of solar flare activity.
Search relevance: 98.83 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
A short-lived sudden increase in the intensity or radiation emitted in the neighborhood of sunspots monitored in H-alpha.
Search relevance: 97.99 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
Listings and characterizations of solar x-ray flares
Search relevance: 97.99 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
A prominence is a large, bright features extending outward from the sun's surface, often in a loop shapce (Wikipedia)
Search relevance: 89.78 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:23 PM -
Filaments are formed in magnetic loops that hold relatively cool, dense gas suspended above the surface of the Sun (David Hathaway/NASA)
Search relevance: 88.55 | Views last month: 2 | Catalog Last Checked: August 02, 2026 at 05:22 PM -
Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...
Search relevance: 29.38 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...
Search relevance: 29.38 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...
Search relevance: 28.92 | Views last month: 5 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...
Search relevance: 28.78 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...
Search relevance: 28.55 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...
Search relevance: 28.39 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
These datasets consist of full-disk, daily photographs of the sun taken at the H-alpha wavelength. Collection includes a variety of H-alpha photographic datasets contributed by a number of...
Search relevance: 28.08 | Views last month: 0 | Catalog Last Checked: August 02, 2026 at 05:43 PM -
The calcium datasets consist of full-disk images of the sun in Calcium (Ca) II K wavelength (393.4 nm). Ca II K imagery reveal magnetic structures of the sun from about 500 to 2000 km above the...
Search relevance: 27.97 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:42 PM -
The OMI Level 1B solar irradiance product is the radiometrically calibrated and geolocated measurements of the UV and Visible channels of the spectral solar irradiance. It is the averaged...
Search relevance: 27.96 | Views last month: 0 | Catalog Last Checked: October 29, 2026 at 10:24 PM -
Solar synoptic maps usually refer to assembled composites recorded over a full solar rotation of about 27 days. Synoptic maps can be derived from single wavelength images or from multi-wavelength...
Search relevance: 27.81 | Views last month: 1 | Catalog Last Checked: August 02, 2026 at 05:43 PM
