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 images highlighting solar features of interest (see above). Images for this dataset were provided by numerous solar observatories. The Boulder H-alpha (6563 A) synoptic maps, or charts, were first developed by McIntosh as an outgrowth of efforts to infer solar magnetic fields.

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 images highlighting solar features of interest (see above). Images for this dataset were provided by numerous solar observatories. The Boulder H-alpha (6563 A) synoptic maps, or charts, were first developed by McIntosh as an outgrowth of efforts to infer solar magnetic fields.

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 images highlighting solar features of interest (see above). Images for this dataset were provided by numerous solar observatories. The Boulder H-alpha (6563 A) synoptic maps, or charts, were first developed by McIntosh as an outgrowth of efforts to infer solar magnetic fields.

These historical sunspot drawings are from the collection of Charles Anthony Schott whie with the U.S.Coastal Survey, which was a predecessor to NOAA.

The photosphere of the Sun has a temperature of around 6, 000 degreesK and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the sunspots lower temperatures. Sunspots are solar active regions having stron magnectic fields and propensity for erupting in the form of solar flares. They typically form near the solar equator.

The photosphere of the Sun has a temperature of around 6, 000 degreesK and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the sunspots lower temperatures. Sunspots are solar active regions having stron magnectic fields and propensity for erupting in the form of solar flares. They typically form near the solar equator. This dataset shows drawings done at the McMath Observatory.

The photosphere of the Sun has a temperature of around 6, 000 degrees K and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the sunspots lower temperatures. Sunspots are solar active regions having strong magnetic fields and propensity for erupting in the form of solar flares. They typically form near the solar equator. The National Solar Observatory (NSO) has provided the National Geophysical Data Center (NGDC) with a full set of daily solar sunspot drawings prepared by the Sacramento Peak (Sac Peak) Solar Observatory.

The photosphere of the Sun has a temperature of around 6, 000 degrees K and is the region in which sunspot activity is located. Sunspots appear dark against the surface of the sun due to the sunspots lower temperatures. Sunspots are solar active regions having stron magnectic fields and propensity for erupting in the form of solar flares. They typically form near the solar equator. Forecasters at the Space Environmental Lab (SEL) now known as SWPC made these observations.

Collection consists of white-light (unfiltered), full-disk images of the sun provided by various solar observatories and institutions. White light pictures show how the Sun appears to the naked eye, when all the colors of the rainbow are collected by the camera. In a white light photo, the part of the Sun that we see is called the "photosphere". It has a temperature of about 6000 degrees Celsius, much cooler than the corona.

Debrecen Observatory collected white light images from many other observatories.