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Last Post 31 Mar 2017 01:58 PM by  Mitzi Adams
spots
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lisa t





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31 Mar 2017 07:45 AM
    Is it true that sunspots are not really dark, but they only seem to be as viewed from earth in a telescope?


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    31 Mar 2017 01:58 PM
    Hi Lisa,

    Sunspots appear dark on the solar disk because they are cooler than the surrounding unspotted solar "surface" (photosphere). If you could safely view a sunspot without a telescope, and you can do this with PROPER FILTERS when the spots are very large, they would still appear dark; the darkness of the spots has nothing to do with the telescope, only relative temperature.
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