Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Design, analysis, and testing of a microdot apodizer for the Apodized
  Pupil Lyot Coronagraph. II. The dot size impact. (Research Note)   The Apodized Pupil Lyot Coronagraph (APLC) is a promising coronagraphic
device for direct exoplanets detection on the European-Extremely Large
Telescope. We present new near-IR laboratory results using binary apodizers --
the so-called microdots apodizer -- which represent a very attractive and
advantageous solution for the APLC.
  Microdots apodizers introduce high-frequency noise whose characteristics
depend on the pixel size. The aim of this work is to characterize the impact of
the pixel size on the coronagraphic image. Estimation of both the noise
intensity and its localization in the field of view is the objective of this
study.
  Stray-light diffraction introduced by the finite pixel size was measured
during experiment. Intensity decreases, and radial distance increases, when the
pixel size gets smaller.
  The physical properties of these microdots apodizers have been demonstrated
in laboratory. The microdots apodizer is a suitable solution for any
coronagraph using pupil amplitude apodization if properly designed.

29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph