Author: andy.lunt
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5Dec

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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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5Dec

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continued from part 1 Uniformity of the etalon plates To continue where I left off in my last post, this widening of the BP from center to edge can be caused uniformity of the etalon plates, over-attenuation of the etalon via excessive tilting, differential heating (i.e., edge heating a solid [...]
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13Nov

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It is often stated that once you look through a Double Stacked Solar Telescope, you don't ever want to go back to Single Stack.  However, what is Double Stack and what are the benefits of having a Double Stacked system? There has been significant chatter on Lunt Social Media and e-mail lately [...]
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11Jan

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 Where will you be for the Mercury Transit? When: Monday, May 9th 2016 Where: The above map outlines the areas of the world where the Transit will be visible. (courtesy of Fred Espenak) For more information about the Transit of Mercury from Fred Espenak (Mr. Eclipse) visit: [...]

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Lunt is currently hiring for the following positions: Outside sales person. Optical/Mechanical Technician. Machine shop coordinator. For more information on these openings please contact Nicolas Lopez at [email protected] for more information. Openings will be updated on a weekly [...]
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2Dec

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With 2015 winding to a close, Lunt Solar System’s philanthropic arm- The Charlie Bates Solar Astronomy Project (www.solarastronomy.org)- took some time to reflect back on what an incredible year it has been for their global science nonprofit. Director Stephen W. Ramsden of Atlanta, GA, USA [...]