The NST: First results and some lessons for ATST and EST

Details The NST: First results and some lessons for ATST and EST The NST: First results and some lessons for ATST and EST

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010an....331..620g&link_type=abstract

Astronomische Nachrichten, Vol.331, Issue 6, p.620

Astronomy and Astrophysics

Astronomy

11

Sun: Granulation, Instrumentation: Miscellaneous, Telescopes

Scientific paper

In January 2009, first light observations with the NST (New Solar Telescope) in Big Bear Solar Observatory (BBSO) were made. NST has a 1.7 m primary with a 1.6 m clear aperture. First observational results in TiO and Hα are shown and discussed. The NST primary mirror is the most aspheric telescope mirror deployed to date. The NST is early in its commissioning, and the plans for this phase will be sketched. Lessons learned in building and implementing the NST are germane for the ATST and EST telescopes and will be discussed. The NST has an off-axis Gregorian configuration consisting of a parabolic primary, heat-stop, elliptical secondary and diagonal flats. The focal ratio of the primary mirror is f/2.4. The working wavelength range covers from 0.4 to 1.7 μm in the Coudé Lab beneath the telescope and all wavelengths including the far infrared at the Nasmyth focus on the dome floor.

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