| DOI | Trouver le DOI : https://doi.org/10.1117/12.926626 |
|---|
| Auteur | Rechercher : Tollestrup, E.V.; Rechercher : Pazder, J.1; Rechercher : Barrick, G.; Rechercher : Martioli, E.; Rechercher : Schiavon, R.P.; Rechercher : Anthony, A.1; Rechercher : Halman, M.1; Rechercher : Veillet, C. |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut Herzberg d'astrophysique du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Conférence | Ground-Based and Airborne Instrumentation for Astronomy IV, July 1-6, 2012, Amsterdam, The Netherlands |
|---|
| Sujet | Focal ratio degradation; High resolution; Initial design; Keck observatory; Laboratory test; Long fiber; Optical spectrograph; Remote access; Transmission loss; Astronomy; Optical fibers; Optical telescopes; Telescopes; Spectrographs |
|---|
| Résumé | The Gemini Remote Access CFHT ESPaDOnS Spectrograph (GRACES) is an innovative instrumentation experiment that will demonstrate if ESPaDOnS, a bench-mounted high-resolution optical spectrograph at CFHT, can be fed by a 270-m long fiber from the Gemini-North telescope with low enough losses to remain competitive with conventional spectrographs on other 8 to 10-m telescopes. Detailed simulations have shown that GRACES should be more sensitive than the HIRES spectrograph at Keck Observatory at wavelengths longer than about 600-700 nm. This result is possible by using FPB-type of optical fibers made by Polymicro Technologies and by keeping the critical focal ratio degradation (FRD) losses to less than 10%. Laboratory tests on these FPB optical fibers are underway and show that for 36-m lengths that the FRD losses are as low as 0.8% with a repeatability of 1%. Tests are currently underway on 280-m lengths. © 2012 SPIE. |
|---|
| Date de publication | 2012 |
|---|
| Maison d’édition | SPIE |
|---|
| Dans | |
|---|
| Série | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro NPARC | 21269204 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 311509c3-defe-4ec6-a038-68bfce8c571b |
|---|
| Enregistrement créé | 2013-12-12 |
|---|
| Enregistrement modifié | 2020-04-21 |
|---|
