Date: Fri, 16 Oct 1998 19:22:46 +0100
From: Antoine Labeyrie <labeyrie@obs-hp.fr>
To: Peter Lawson
Subject: Science, 25 Sept 1998, p.1940
Dear Peter,
1- We have posted a new pre-print on our web pages www.obs-hp.fr
at http://www.obs-hp.fr/www/preprints/pp125/pp125.html
2- Science just published ( September 25, p.1940) our simulation of
exo-planet imaging with a 150 km densified-pupil array, but with no
explanation nor reference to our article in preparation.
The visitors of your web site may be interested to know how we did
the simulation: We convolved a Galileo image of the Earth and Moon (where the
the Moon was relocated to fit in the field) with the peaked interference
function, then multiplied with the diffraction function. According to
the theory of "densified pupil imaging" ( Labeyrie, Astronomy & Astrophysics,
118, 373,1996, also at http://www.obs-hp.fr/www/preprints/pp92/pp92.html)
this provides the image directly recorded as a snapshot at the combined
focus.
Post-detection deconvolution, not achieved in the images shown, can
remove in part the spurious halo caused by the feet of the interference
function.
Details will be given in a paper being completed.
Cheers
Antoine