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Infrared prism objective available at TNG

The infrared multi-mode instrument of TNG, NICS, can now perform low resolution spectroscopic observations using the Amici prism in slit-less mode. The frame format is similar to classical prism-objective images, an example is given in the figure below. Characteristics and performances Field of view 3.5 x 4.2 arcmin   Spectral coverage 0.9-1.75 microns Long wavelength cutoff set by SW filter Dispersion (Å/pixel) 100 (H), 80 (J), 55 (1mic)   Resolving power 40...

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TNG-SARG confirms the 21 minutes oscillations of Procyon

SARG, the high resolution optical spectrometer of TNG, has once more proved its exceptional stability and capabilities by delivering one of the most accurate measurements of solar-like p-mode oscillations in a star. The results, which are briefly summarized below, will be presented in details in a forthcoming paper by Claudi R., Bonanno A., Ventura R., Desidera S., Gratton R., Endl M. & Leccia S. The F5 IV - V sub-giant Procyon was observed over six nights with SARG at the beginning of...

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New optical filters at TNG

The optical imagers of TNG, DOLORES and OIG, are now equipped with a new set of broad band filters with very high efficiency manufactured by Asahi Spectra Ltd. Their transmission curves are very similar to those used in the SDSS survey and are summarized in the figure below (blue curves) together with those of the UBVRI standard filters (red curves). More details can be found in the dedicated TNG filters web page which also includes information of non-standard and narrow band filters for the...

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