Integrator‐Type dc Amplifier
作者:
A. J. Gardiner,
H. L. Johnson,
期刊:
Review of Scientific Instruments
(AIP Available online 1955)
卷期:
Volume 26,
issue 12
页码: 1145-1147
ISSN:0034-6748
年代: 1955
DOI:10.1063/1.1715210
出版商: AIP
数据来源: AIP
摘要:
A dc amplifier that uses the condenser‐charging principle of electron counting has been constructed and used for the measurement of stars as faint as magnitude 20.8 with the 82‐inch and 100‐inch telescope. The device is simple (15 tubes), will measure stars of any brightness permitted by the photomultiplier, and has a simple automatic recording feature using a Brown recording meter.
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