Abstract
We show star images obtained with a miniature ``densified pupil imaging
interferometer'' also called a hyper-telescope. The formation of such
images violates a ``golden rule of imaging interferometers'' which
appeared to forbid the use of interferometric arrangements differing
from a Fizeau interferometer. These produce useless images when the
sub-apertures spacing is much wider than their size, owing to
diffraction through the sub-apertures. The hyper-telescope arrangement
solves these problems opening the way towards multi-kilometer imaging
arrays in space. We experimentally obtain an intensity gain of (
24± 3 times ) when a densified-pupil interferometer is compared
to an equivalent Fizeau-type interferometer and show images of the
double star ¿ Gem. The initial results presented confirm the
possibility of directly obtaining high resolution and high dynamic range
images in the recombined focal plane of a large interferometer if enough
elements are used. Based on observations performed at the Observatoire
de Haute Provence.
Original language | English |
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Pages (from-to) | 285-290 |
Number of pages | 5 |
Journal | Astronomy & Astrophysics Supplement |
Volume | 147 |
Publication status | Published - 1 Dec 2000 |