Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Demonstration of high contrast with an obscured aperture with the
  WFIRST-AFTA shaped pupil coronagraph   The coronagraph instrument on the WFIRST-AFTA mission study has two
coronagraphic architectures, shaped pupil and hybrid Lyot, which may be
interchanged for use in different observing scenarios. Each architecture relies
on newly-developed mask components to function in the presence of the AFTA
aperture, and so both must be matured to a high technology readiness level
(TRL) in advance of the mission. A series of milestones were set to track the
development of the technologies required for the instrument; in this paper, we
report on completion of WFIRST-AFTA Coronagraph Milestone 2---a narrowband
$10^{-8}$ contrast test with static aberrations for the shaped pupil---and the
plans for the upcoming broadband Coronagraph Milestone 5.

5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys