Ground-based solar telescopes are specialized telescopes used to observe the Sun from Earth's surface.
Solar telescopes often have multiple focal lengths, and use a various combination of mirrors such as coelostats, lenses, and tubes for instruments including spectrographs, cameras, or coronagraphs.
There are many types of instruments that have been designed to observe Earth's Sun, for example, in the 20th century solar towers were common.
Telescopes for the Sun have existed for hundreds of years, this list is not complete and only goes back to 1900.
40x 4.5m dishes - low freq band 60x 2m dishes - high freq band Radio imaging-spectroscopy observations of the Sun in decimetric and centimetric wavelengths[26] Solar Space Telescopes are part of the List of heliophysics missions There are much smaller commercial and/or amateur telescopes such as Coronado Filters from founder and designer David Lunt, bought by Meade Instruments in 2004 and sells SolarMax solar telescopes up to 8 cm[37][38] Most solar observatories observe optically at visible, UV, and near infrared wavelengths, but other things can be observed.