95.55.-n Astronomical and space-research instrumentation (see also 94.80.+g Instrumentation for space plasma physics, ionosphere, and magnetosphere)
- 95.55.Aq Charge-coupled devices, image detectors, and IR detector arrays (see also 85.60.Gz Photodetectors)
- 95.55.Br Astrometric and interferometric instruments
- 95.55.Cs Ground-based ultraviolet, optical and infrared telescopes
- 95.55.Ev Solar instruments
- 95.55.Fw Space-based ultraviolet, optical, and infrared telescopes
- 95.55.Jz Radio telescopes and instrumentation; heterodyne receivers
- 95.55.Ka X- and gamma-ray telescopes and instrumentation
- 95.55.Pe Lunar, planetary, and deep-space probes
- 95.55.Qf Photometric, polarimetric, and spectroscopic instrumentation
- 95.55.Rg Photoconductors and bolometers
- 95.55.Sh Auxiliary and recording instruments; clocks and frequency standards
- 95.55.Vj Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors (see also 29.40.-n Radiation detectors-in Nuclear physics)
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95.55.Ym Gravitational radiation detectors; mass spectrometers; and other instrumentation and techniques (see also 04.80.Nn Gravitational wave detectors and experiments in-General relativity and gravitation)
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