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

P. R. Goode, R. Coulter, N. Gorceix, V. Yurchyshyn, Wenda Cao

Research output: Contribution to journalArticlepeer-review

87 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)620-623
Number of pages4
JournalAstronomische Nachrichten
Issue number6
StatePublished - Jun 2010

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • Granulation-instrumentation
  • Miscellaneous-telescopes
  • Sun


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