New Visible Tunable Filter is fitted on the NSF Daniel K. Inouye Solar Telescope, in Hawaii. The NSF Daniel K. Inouye Solar Telescope, in Hawaii. The U.S. National Science Foundation Daniel K. Inouye ...
A narrow-band image of the Sun at a wavelength of λ=588.9nm - that of a well known solar sodium line also known as the “NaD line.” The image was acquired during recent first light efforts with the VTF ...