Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2010-06-02
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
A&A accepted
Scientific paper
Earlier apodized-pupil Lyot coronagraphs (APLC) have been studied and developed to enable high-contrast imaging for exoplanet detection and characterization with present-day ground-based telescopes. With the current interest in the development of the next generation of telescopes, the future extremely large telescopes (ELTs), alternative APLC designs involving multistage configuration appear attractive. The interest of these designs for application to ELTs is studied. Performance and sensitivity of multistage APLC to ELT specificities are analyzed and discussed, taking into account several ineluctable coronagraphic telescope error sources by means of numerical simulations. Additionally, a first laboratory experiment with a two-stages-APLC in the near-infrared (H-band) is presented to further support the numerical treatment. Multistage configurations are found to be inappropriate to ELTs. The theoretical gain offered by a multistage design over the classical single-stage APLC is largely compromised by the presence of inherent error sources occurring in a coronagraphic telescope, and in particular in ELTs. The APLC remains an attractive solution for ELTs, but rather in its conventional single-stage configuration.
No associations
LandOfFree
Apodized-pupil Lyot coronagraphs: multistage designs for extremely large telescopes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Apodized-pupil Lyot coronagraphs: multistage designs for extremely large telescopes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apodized-pupil Lyot coronagraphs: multistage designs for extremely large telescopes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-512661