Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An innovative integral field unit upgrade with 3D-printed micro-lenses
  for the RHEA at Subaru   In the new era of Extremely Large Telescopes (ELTs) currently under
construction, challenging requirements drive spectrograph designs towards
techniques that efficiently use a facility's light collection power. Operating
in the single-mode (SM) regime, close to the diffraction limit, reduces the
footprint of the instrument compared to a conventional high-resolving power
spectrograph. The custom built injection fiber system with 3D-printed
micro-lenses on top of it for the replicable high-resolution exoplanet and
asteroseismology spectrograph at Subaru in combination with extreme adaptive
optics of SCExAO, proved its high efficiency in a lab environment, manifesting
up to ~77% of the theoretical predicted performance.

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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
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math