Tag: Lunt Solar Telescope
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(continued from part 2) FWHM At the FWHM, or the 42.5%T point: The bandpass is measured in a single system at 0.7A. In DS system the bandpass is the multiplication of the 2 interference filters, 0.7A x 0.7A = 0.49A. To be specific: The new width of the Etalon T curve is moved by a multiple of the [...]
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Seeing Conditions Choosing the solar telescope that is right for you depends partially upon the seeing conditions that are most prevalent in your area.  Therefore, if you live near the water, you may want a scope with an aperture of 80mm or less.  This video will help you decide what’s right [...]