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Does anyone know if these are visible light pictures? Or are they false colored images of a different part of the spectrum?
by tmoullet 12y ago
Does anyone know if these are visible light pictures? Or are they false colored images of a different part of the spectrum?
- Mahn 12y ago> visible light pictures I don't think it's even physically possible to capture the sun that close in the normal light spectrum.
- micampe 12y agoThe YouTube description says it's 304 ångström ultraviolet.
- FoeNyx 12y agoFound this description, on ESA website, for an old SOHO picture taken around 304 Å : "304 Å : spectral line emitted by ionised helium (He II). Corresponding to a temperature of about 60,000 Kelvin, emission in this line shows the upper chromosphere of the Sun." That gives another meaning to the expression "hot like HeII" ... sorry ;) (but apparently it's less hot that the pictures in 94 Å linked to emission of Fe XVIII with temperature of about 7,000,000K)
- deleted 12y ago[deleted]
- mark-r 12y agoAren't sunspots darker than the rest of the sun in visible light? Must be because the output has all shifted to UV.