Astrophysical: Telescopes

  • Publication
    Distribution, sizes, and luminosity function of the HII regions in NGC 4321
    From H-alpha CCD observations taken with the 4.2-m William Herschel Telescope, a catalog of 456 H II regions of the inner zone of the spiral galaxy NGC 4321 has...
  • Publication
    Double-pass spectro-imaging: TUNIS
    We present TUNIS, a double-pass spectro-imager built in THEMIS as a proof-of-concept for EST. Basic concepts and selected first results are shown. We introduce...
  • Publication
    Effect of telescope vibrations upon high angular resolution imaging
    We have analysed short-exposure high-resolution images obtained on the William Herschel Telescope (WHT), Big Telescope Azimuthal (BTA) and Canada-France-Hawaii...
  • Publication
    EMIR, the GTC NIR multi-object imager-spectrograph
    EMIR, currently entering into its fabrication and AIV phase, will be one of the first common user instruments for the GTC, the 10 meter telescope under...
  • Publication
    Euclid preparation. XXIX. Water ice in spacecraft Part I: The physics of ice formation and contamination
    Material outgassing in a vacuum leads to molecular contamination, a well-known problem in spaceflight. Water is the most common contaminant in cryogenic...
  • Publication
    European Solar Telescope: Progress status
    In this paper, the present status of the development of the design of the European Solar Telescope is described. The telescope is devised to have the best...
  • Publication
    Extragalactic observatory science with the ASTRI mini-array at the Observatorio del Teide
    The ASTRI Mini-Array is a next-generation system of nine imaging atmospheric Cherenkov telescopes that is going to be built at the Observatorio del Teide site...
  • Publication
    Fibre optics at the 4.2 M telescope (WHT)
    The experimental fiber-optic spectrograph FLEX being developed for the 4.2-m William Herschel Telescope (WHT) at Tenerife is briefly described and illustrated...
  • Publication
    First light simultaneous triple-channel optical observations of the OPTICAM system at the OAN-SPM
    OPTICAM is a triple-band optical system developed for the 2.1 m telescope of the National Astronomical Observatory in the Sierra de San Pedro Mártir (OAN-SPM)...