Elmer is a visible imager and spectrograph for the GTC. Elmer Optics has been exhaustively tested at different steps, from the blanks to the final assemblies in...
Testing the optics of the instrument ELMER for the GTC 10-m telescope
ELMER is a visible imager and spectrograph for the GTC. ELMER is currently in the final stage of testing (at the PO in La Laguna, Tenerife) previous to be...
Testing the quenching subgrid physics in Green Valley galaxies
In the title of this Symposium: "The rise and fall of star formation in galaxies", the "falling" stage is mostly represented by so-called Green Valley galaxies...
Testing the Standard Model of Active Galactic Nuclei through Quasar Variability
The standard model of Active Galactic Nuclei (AGNs) predicts that Type 2 AGNs and Type 1 AGNs only differ in the orientation of a dust torus, which does or does...
Testing the surface evolution hypothesis of JFCs with ground photometric observations
We have identified a correlation of increasing albedo for increasing phase-function slope using ground-based and spacecraft observations of 14 Jupiter-family...
Tests and procedures for optimizing EMIR cooling system
EMIR is a wide-field camera and a multi-object, intermediate resolution near-infrared spectrograph for the GTC telescope. EMIR is a cryogenic instrument whose...
Tests of VPHGs in the NIR for use at cryogenic temperatures
We report on the performances measured at room temperature, before and after a cryogenic cooling cycle, of a set of NIR Volume Phase Holographic Gratings (VPHGs...