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 ...
In the 1930s the Vineland area of Cumberland County must have been a very unusual place indeed. Perhaps there was something in the water, or maybe the Great Depression left local residents with so ...
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 ...