Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High contrast imaging wavefront sensor referencing from coronagraphic
  images   A key challenge of high contrast imaging (HCI) is to differentiate a speckle
from an exoplanet signal. The sources of speckles are a combination of
atmospheric residuals and aberrations in the non-common path. Those non-common
path aberrations (NCPA) are particularly challenging to compensate for as they
are not directly measured, and because they include static, quasi-static and
dynamic components. The proposed method directly addresses the challenge of
compensating the NCPA. The algorithm DrWHO - Direct Reinforcement Wavefront
Heuristic Optimisation - is a quasi-real-time compensation of static and
dynamic NCPA for boosting image contrast. It is an image-based lucky imaging
approach, aimed at finding and continuously updating the ideal reference of the
wavefront sensor (WFS) that includes the NCPA, and updating this new reference
to the WFS. Doing so changes the point of convergence of the AO loop. We show
here the first results of a post-coronagraphic application of DrWHO. DrWHO does
not rely on any model nor requires accurate wavefront sensor calibration, and
is applicable to non-linear wavefront sensing situations. We present on-sky
performances using a pyramid WFS sensor with the Subaru coronagraph extreme AO
(SCExAO) instrument.

20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex