Outputs (44)

First light of VLT/HiRISE: High-resolution spectroscopy of young giant exoplanets (2024)
Journal Article
Vigan, A., El Morsy, M., Lopez, M., Otten, G. P. P. L., Garcia, J., Costes, J., …Valenzuela Soto, J. (2024). First light of VLT/HiRISE: High-resolution spectroscopy of young giant exoplanets. Astronomy & Astrophysics, 682, Article A16. https://doi.org/10.1051/0004-6361/202348019

A major endeavor of this decade is the direct characterization of young giant exoplanets at high spectral resolution to determine the composition of their atmosphere and infer their formation processes and evolution. Such a goal represents a major ch... Read More about First light of VLT/HiRISE: High-resolution spectroscopy of young giant exoplanets.

Validation of strategies for coupling exoplanet PSFs into single-mode fibres for high-dispersion coronagraphy (2022)
Journal Article
El Morsy, M., Vigan, A., Lopez, M., Otten, G., Choquet, E., Madec, F., Costille, A., Sauvage, J.-F., Dohlen, K., Muslimov, E., Pourcelot, R., Floriot, J., Benedetti, J.-A., Blanchard, P., Balard, P., & Murray, G. (2022). Validation of strategies for coupling exoplanet PSFs into single-mode fibres for high-dispersion coronagraphy. Astronomy & Astrophysics, 667, Article A171. https://doi.org/10.1051/0004-6361/202243408

On large ground-based telescopes, the combination of extreme adaptive optics (ExAO) and coronagraphy with high-dispersion spectroscopy (HDS), sometimes referred to as high-dispersion coronagraphy (HDC), is starting to emerge as a powerful technique f... Read More about Validation of strategies for coupling exoplanet PSFs into single-mode fibres for high-dispersion coronagraphy.

Spectro-Imaging Polarimetry of the Local Corona During Solar Eclipse (2017)
Journal Article
Qu, Z., Dun, G., Chang, L., Murray, G., Cheng, X., Zhang, X., & Deng, L. (2017). Spectro-Imaging Polarimetry of the Local Corona During Solar Eclipse. Solar Physics, 292(2), Article 37. https://doi.org/10.1007/s11207-017-1055-x

Results are presented from spectro-imaging polarimetry of radiation from the local solar corona during the 2013 total solar eclipse in Gabon. This polarimetric observation was performed from 516.3 nm to 532.6 nm using a prototype Fiber Arrayed Solar... Read More about Spectro-Imaging Polarimetry of the Local Corona During Solar Eclipse.

Prime Focus Spectrograph for the Subaru telescope: massively multiplexed optical and near-infrared fiber spectrograph (2015)
Journal Article
Sugai, H., Tamura, N., Karoji, H., Shimono, A., Takato, N., Kimura, M., …Yan, C. (2015). Prime Focus Spectrograph for the Subaru telescope: massively multiplexed optical and near-infrared fiber spectrograph. Journal of Astronomical Telescopes, Instruments, and Systems, 1(3), Article 035001. https://doi.org/10.1117/1.jatis.1.3.035001

he Prime Focus Spectrograph (PFS) is an optical/near-infrared multifiber spectrograph with 2394 science fibers distributed across a 1.3-deg diameter field of view at the Subaru 8.2-m telescope. The wide wavelength coverage from 0.38  μm0.38  μm to 1.... Read More about Prime Focus Spectrograph for the Subaru telescope: massively multiplexed optical and near-infrared fiber spectrograph.

HIRES: the high resolution spectrograph for the E-ELT (2014)
Presentation / Conference Contribution
Zerbi, F., Bouchy, F., Fynbo, J., Maiolino, R., Piskunov, N., Rebolo Lopez, R., Santos, N., Strassmeier, K., Udry, S., Vanzi, L., Riva, M., Basden, A., Boisse, I., Bonfils, X., Buscher, D., Cabral, A., Dimarcantonio, P., Di Varano, I., Henry, D., Monteiro, M., …Zoccali, M. (2014, August). HIRES: the high resolution spectrograph for the E-ELT. Presented at Ground-based and Airborne Instrumentation for Astronomy V, Montréal, Quebec, Canada

The current instrumentation plan for the E-ELT foresees a High Resolution Spectrograph conventionally indicated as HIRES. Shaped on the study of extra-solar planet atmospheres, Pop-III stars and fundamental physical constants, HIRES is intended to em... Read More about HIRES: the high resolution spectrograph for the E-ELT.

Fiber optical cable and connector system (FOCCoS) for PFS/ Subaru (2014)
Presentation / Conference Contribution
de Oliveira, A., de Oliveira, L., de Arruda, M., Souza Marrara, L., dos Santos, L., Ferreira, D., dos Santos, J., Rosa, J., Junior, O., Pereira, J., Castilho, B., Gneiding, C., Junior, L., de Oliveira, C., Gunn, J., Ueda, A., Takato, N., Shimono, A., Sugai, H., Karoji, H., …Reiley, D. (2014, July). Fiber optical cable and connector system (FOCCoS) for PFS/ Subaru. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

Studying focal ratio degradation of optical fibers for Subaru's Prime Focus Spectrograph. (2014)
Presentation / Conference Contribution
dos Santos, J., de Oliveira, A., Gunn, J., de Oliveira, L., Vital de Arruda, M., Castilho, B., Gneiding, C., Ribeiro, F., Murray, G., Reiley, D., Sodré Junior, L., & de Oliveira, C. (2014, July). Studying focal ratio degradation of optical fibers for Subaru's Prime Focus Spectrograph. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, Montréal, Quebec

Focal Ration Degradation (FRD) is a change in light’s angular distribution caused by fiber optics. FRD is important to fiber-fed, spectroscopic astronomical systems because it can cause loss of signal, degradation in spectral resolution, or increased... Read More about Studying focal ratio degradation of optical fibers for Subaru's Prime Focus Spectrograph..

Fibre system of DESI (2014)
Presentation / Conference Contribution
Allington-Smith, J., Poppett, C., Bramall, D., Edelstein, J., Lafever, R., Schmoll, J., Dunlop, C., Murray, G., Besuner, R., & Talbot, G. (2014, July). Fibre system of DESI. Presented at Ground-based and Airborne Instrumentation for Astronomy V

Progress with the Prime Focus Spectrograph for the Subaru Telescope: a massively multiplexed optical and near-infrared fiber spectrograph. (2014)
Presentation / Conference Contribution
Sugai, H., Tamura, N., Karoji, H., Shimono, A., Takato, N., Kimura, M., Ohyama, Y., Ueda, A., Aghazarian, H., de Arruda, M., Barkhouser, R., Bennett, C., Bickerton, S., Bozier, A., Braun, D., Bui, K., Capocasale, C., Carr, M., Castilho, B., Chang, Y.-C., …Yan, C.-H. (2014, July). Progress with the Prime Focus Spectrograph for the Subaru Telescope: a massively multiplexed optical and near-infrared fiber spectrograph. Presented at Ground-based and Airborne Instrumentation for Astronomy V

End effects in optical fibres (2013)
Journal Article
Allington-Smith, J., Dunlop, C., Lemke, U., & Murray, G. (2013). End effects in optical fibres. Monthly Notices of the Royal Astronomical Society, 436(4), 3492-3499. https://doi.org/10.1093/mnras/stt1842

The performance of highly multiplexed spectrographs is limited by focal ratio degradation (FRD) in the optical fibres. It has already been shown that this is caused mainly by processes concentrated around the mounting points at the ends of the fibres... Read More about End effects in optical fibres.