A novel quadruple beam imaging polarimeter and its application to Comet Tanaka-Machholz 1992 X

被引:36
作者
Geyer, EH [1 ]
Jockers, K [1 ]
Kiselev, NN [1 ]
Chernova, GP [1 ]
机构
[1] MAX PLANCK INST AERON,D-37189 KATLENBURG DUHM,GERMANY
关键词
polarimeters; Comet Tanaka-Machholz 1992 X;
D O I
10.1007/BF00645780
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
For observations of solar system objects an imaging polarimeter has been constructed as an auxiliary instrument for a f/15 focal reducer. With this instrument simultaneous measurement of the Q and U Stokes parameters is possible. It contains no moving parts such as a moving lambda/2 retarder. The polarizer consists of two Wollaston prisms which are combined to form a single optical element. Their polarization angles differ by 45 degrees. This compound polarizer is placed in the exit pupil of the afocal telescope-collimator system of the focal reducer and splits the exit pupil into halves. In this way four polarized beams with E-vector orientations 0 degrees, 90 degrees, 45 degrees, and 135 degrees emerge from the exit pupil. These are intercepted by the camera lens of the focal reducer system and imaged simultaneously on the CCD detector. With a properly designed field mask at the Cassegrain focus, the four beams are imaged without overlap. As a demonstration of the capabilities of this quadruple-beam Wollaston-prism polarimeter, we present observations of comet Tanaka-Machholz 1992 X in May 1992. The advantages, shortcomings, and possible improvements of the instrument are discussed.
引用
收藏
页码:259 / 274
页数:16
相关论文
共 25 条
  • [11] GEYER EH, 1994, IAU WORK GROUP WIDE, V5, P33
  • [12] GEYER EH, 1984, P IAU COLL, V79, P575
  • [13] GEYER EH, 1981, MITT ASTRON GES, V54, P156
  • [14] GEYER EH, 1993, IAU WORK GROUP WIDE, V3, P21
  • [15] HANEL A, 1987, ASTRON ASTROPHYS, V176, P338
  • [16] HANEL A, 1987, ASTRON ASTROPHYS, V176, P347
  • [17] ON STANDARD POLARIZED STARS
    HSU, JC
    BREGER, M
    [J]. ASTROPHYSICAL JOURNAL, 1982, 262 (02) : 732 - 738
  • [18] LYOT B, 1948, CR HEBD ACAD SCI, V226, P25
  • [19] RENARD JB, 1992, ANN GEOPHYS, V10, P288
  • [20] ELECTRONOGRAPHIC POLARIMETRY - THE DURHAM POLARIMETER
    SCARROTT, SM
    WARRENSMITH, RF
    PALLISTER, WS
    AXON, DJ
    BINGHAM, RG
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1983, 204 (03) : 1163 - &