The large angle spectroscopic coronagraph (LASCO)

被引:2587
作者
Brueckner, GE
Howard, RA
Koomen, MJ
Korendyke, CM
Michels, DJ
Moses, JD
Socker, DG
Dere, KP
Lamy, PL
Llebaria, A
Bout, MV
Schwenn, R
Simnett, GM
Bedford, DK
Eyles, CJ
机构
[1] ASTRON SPATIALE LAB,MARSEILLE,FRANCE
[2] MAX PLANCK INST AERON,LINDAU,GERMANY
[3] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,SPACE RES GRP,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
关键词
sun; corona; coronagraph;
D O I
10.1007/BF00733434
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Large Angle Spectroscopic Coronagraph (LASCO) is a three coronagraph package which has been jointly developed for the Solar and Heliospheric Observatory (SOHO) mission by the Naval Research Laboratory (USA), the Laboratoire d'Astronomie Spatiale (France), the Max-Planck-Institut fur Aeronomie (Germany), and the University of Birmingham (UK). LASCO comprises three coronagraphs, C1, C2, and C3, that together image the solar corona from 1.1 to 30 R. (C1: 1.1 - 3 R., C2: 1.5 - 6 R., and C3: 3.7 - 30 R.) The C1 coronagraph is a newly developed mirror version of the classic internally-occulted Lyot coronagraph, while the C2 and C3 coronagraphs are externally occulted instruments. High-resolution imaging spectroscopy of the corona from 1.1 to 3 R. can be performed with the Fabry-Perot interferometer in C1. High-volume memories and a high-speed microprocessor enable extensive on-board image processing. Image compression by a factor of about 10 will result in the transmission of 10 full images per hour.
引用
收藏
页码:357 / 402
页数:46
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