Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-10-02
Astronomy and Astrophysics
Astrophysics
11 pages, 26 figures
Scientific paper
10.1117/12.787877
Classically, optical and near-infrared interferometry have relied on closure phase techniques to produce images. Such techniques allow us to achieve modest dynamic ranges. In order to test the feasibility of next generation optical interferometers in the context of the VLTI-spectro-imager (VSI), we have embarked on a study of image reconstruction and analysis. Our main aim was to test the influence of the number of telescopes, observing nights and distribution of the visibility points on the quality of the reconstructed images. Our results show that observations using six Auxiliary Telescopes (ATs) during one complete night yield the best results in general and is critical in most science cases; the number of telescopes is the determining factor in the image reconstruction outcome. In terms of imaging capabilities, an optical, six telescope VLTI-type configuration and ~200 meter baseline will achieve 4 mas spatial resolution, which is comparable to ALMA and almost 50 times better than JWST will achieve at 2.2 microns. Our results show that such an instrument will be capable of imaging, with unprecedented detail, a plethora of sources, ranging from complex stellar surfaces to microlensing events.
Absil Olivier
Aringer Bernard
Beckert Thomas
Berger Jean-Phillipe
Borkowski Virginie
No associations
LandOfFree
Phase Closure Image Reconstruction for Future VLTI Instrumentation 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 Phase Closure Image Reconstruction for Future VLTI Instrumentation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase Closure Image Reconstruction for Future VLTI Instrumentation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-409058