... Explanation: Extending above the photosphere or visible surface of the Sun , the faint, tenuous solar corona can't be easily seen from Earth, but it is measured to be hundreds of times hotter than the photosphere itself. ...
... The wealth of structures and scales visible in the quiet solar photosphere is well exemplified in this white light movie, obtained at the Dunn Solar Telescope at the NSO/Sacramento Peak on Oct. ...
... DST AO system, IBIS produces high-fidelity imaging spectroscopy and polarimetry of the solar photosphere and chromosphere ... sample different parts of the solar atmosphere, from the mid photosphere (e.g. reverse granulation) to the mid chromosphere ...
... High Resolution Solar Studies - Observation of the solar photosphere and chromosphere at high resolutions . ... High Resolution Solar Studies . Observations of the solar photosphere and chromosphere at high resolutions . Solar Activity . ...
... in the center of a moderately large sunspot can be as low as ~ 4000 K , as compared to 5800 K for the solar photosphere ... circular region called umbra , which is surrounded by a lighter (but still darker than the photosphere) ring called penumbra ...
... Sun's outer visible layer is called the photosphere and has a temperature of 6,000њC ... Sun Diagram . The chromosphere is above the photosphere. ... Sunspots are dark depressions on the photosphere with a typical temperature of 4,000 ...
... The three spectral lines observed include: . Fe II, 7224.5 , deep photosphere; . Fe I, 7090.4 , upper photosphere; and . ... Fe II, 7224.5 , deep photosphere; . Fe I, 7090.4 , upper photosphere; and . Ca II 8542.1 , chromosphere. ...