The telescope readout electronics for the gravity probe B satellite

被引：3

作者：

Demroff, HP

Babu, S

Bye, MR

Coleman, KL

Das, N

DeBra, DB

Ehrensberger, PD

Farley, RP

Gill, DK

Goebel, JH

Jhabvala, M

Kashani, A

Romero, E

Sullivan, MT

机构：

[1] Lockheed Martin Missiles & Space GP B, Ctr Adv Technol, Palo Alto, CA 94304 USA

[2] Ball Aerosp & Technol Corp, Boulder, CO USA

[3] Stanford Univ, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA

[4] Hughes STX, Lanham, MD USA

[5] Stanford Univ, Dept Aeronaut & Astronaut, Stanford, CA 94305 USA

[6] NASA, Ames Res Ctr, Sensors & Instrumentat Branch, Stanford, CA 94305 USA

[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[8] Atlas Sci, Sunnyvale, CA 94086 USA

来源：

JOURNAL DE PHYSIQUE IV | 1998年 / 8卷 / P3期

关键词：

D O I：

10.1051/jp4:1998338

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

dThe pointing and stability requirements for the Gravity Probe B (GP-B) Relativity Mission pose a number of challenges for the star-tracking electronics. Because the telescope-gyroscope assembly operates at 2.8 K, the detector circuit's Si JFETs at the telescope focal plane must be thermally isolated and heated to at least 50 K through self-heating or with the aid of heating resistors. We have designed a low noise, thermally stable photodetector circuit that meets the GP-B requirements as well as fabricated an isolator to give the required thermal isolation and mechanical stability. Test results of the detector - isolator assembly are presented.

引用

页码：175 / 179

页数：5

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