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30 2. DEVELOPMENT OF THE FABRY-PEROT DOPPLER IMAGING SYSTEM 2.4 New version of the Fabry-Perot Doppler Imaging System To eliminate two important problems described in Section 2.2, we developed a new version of the FPDIS in 1993. The system diagram of the new version is shown in Figure 2.9. The instrumental parameters are summarized in Table 2.1. The main characteristics of the improvements are as follows. 1) Introduction of a proximity focused photon counting imager (PFPCI) in place of the photon imaging head (PIH) which has the image distortion problem. 2) Introduction of a highspeed CCD camera and a fast data processor to solve the overex- posure problem. 3) Introduction of a digital data recording system in place of optical video-disk recorder, to simplify the data analysis process. 4) Development of a computer control program for automatic operation of the FPDIS includ- ing the selection of interference filters and the time sequences for image data acquisition. In the following sections, we will give details on the characteristics of the new version of the FPDIS concerning an optical system, a Fabry-Perot etalon, interference filters, a two- dimensional photon detecting system, an image data processing and recording system, and a calibration laser. 2.4.1 Optical system Figure 2.10 shows the schematic diagram of the FPDIS. The list of the optical compo- nents used for the FPDIS is given in Table 2.2. The optical layout of the FPDIS is as follows. An all-sky image (FOV = 165°) is focused with the objective fish-eye lens (1) to an image of 24.0 mm diameter and then reduced to an image of 12.0 mm diameter at the 1-st aperture (3) and 5.5 mm diameter at the 2-nd aperture (5) by using the aspheric lens (2) and the relay lens (4), respectively. The incident light is then collimated to nearly parallel beams by the collimator lens (7). The maximum incident angle of light falling upon the Fabry-Perot etalon (8) is 0.66°. These nearly parallel beams cause interference in the etalon. Then the etalon fringes are focused on the photocathode of the PFPCI (13) with the focusing lens (9).
2. DEVELOPMENT OF THE FABRY-PEROT DOPPLER IMAGING SYSTEM 31 Calibration Laser (632.8nm) Fabry-Perot EtaIon (CA=1164), t=12mm) Interference Filter Turret FOV=1 65° Proximity Focused Photon Counting Imager (3-stage MCP) CCD Camera Composite Video Signal Digitiziation, Thresholding, Integration 1 CID 512(H)x480(V) Digital image Image Processor Personal Computer Magnetic Optical Disk Driver (1\:10) Disk Fabry-Perot Doppler Imaging System Video Monitor Figure 2.9. System diagram of the further developed Fabry-Perot Doppler Imaging System (FPDIS)
Page 1 and 2: A Study on Middle-scale Variations
Page 3 and 4: Abstract The solar wind energy inje
Page 5 and 6: Contents Acknowledgments Abstract i
Page 7 and 8: 6 Discussions CONTENTS 6.1 Nighttim
Page 9 and 10: x LIST OF FIGURES 2.10 2.11 2.12 2.
Page 11 and 12: xii LIST OF FIGURES 4.8 Fringe prof
Page 13 and 14: xiv LIST OF FIGURES 5.23 Same as Fi
Page 15 and 16: Chapter 1 Introduction 1.1 The Eart
Page 17 and 18: 1. INTRODUCTION rate at high latitu
Page 19 and 20: 1. INTRODUCTION 5 Analogous to the
Page 21 and 22: 1. INTRODUCTION 7 thermospheric cir
Page 23 and 24: 1. INTRODUCTION 9 Okano and Kim [19
Page 25 and 26: 1. INTRODUCTION confirmed that the
Page 27 and 28: 1. INTRODUCTION 13 and EUV solar ra
Page 29: 1. INTRODUCTION 15 analytical descr
Page 32 and 33: 18 2. DEVELOPMENT OF THE FABRY-PERO
Page 52 and 53: 38 Er e Z O CE F-F-a Ur) h^-• O 0
Page 54 and 55: i 40 2. DEVELOPMENT OF THE FABRY-PE
Page 56 and 57: 42 2. DEVELOPMENT OF TI E FABRY-PER
Page 58 and 59: 44 2. DEVELOPMENT OF THE FABRY -PER
Page 60 and 61: 46 3. OBSERVATIONS 1) The adjustmen
Page 63: (b) 3. OBSERVATIONS (a) !7lasigum 1
Page 67 and 68: 3. OBSERVATIONS Table 3.1. Summary
Page 69: ____------- wind velocity line-of-s
Page 73 and 74: 3. OBSERVATIONS 59 All operations o
Page 75 and 76: Chapter 4 Procedures of Data Anal y
Page 77 and 78: 4. PROCEDURES OF DATA ANALYSIS 63 2
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Page 81 and 82: as 4. PROCEDURES OF DATA ANALYSIS 6
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80 5. THER.MOSPIIERIC NEUTRAL WINDS
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8 2 5_ THERMOSPHERIC NEUTRAL WINDS
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I E 84 5. TILERMOSPHERIC NEUTRAL WI
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I 05 8 6 5. THERMOSPILERIC NEUTRAL
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88 5. THERMOSPHERIC NEUTRAL WINDS O
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Line-of-Sight Neutral Wind Velociti
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5. THERMOSPIIERIC NEUTRAL WINDS OVE
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5. THERMOSPHERIC NEUTRAL WINDS OVER
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Chapter 6 Discussions 6.1 Nighttime
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a_ -1 7 6 5 4 3 2 -2 1 0 - 3 _4 -5
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I = - E ,---, c.) u.) a) ..... c.;
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1 (13 C 7)4 "CI ,;3 C N 0 z 0, 2 Ho
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6. DISCUSSIONS 125 is seen in numer
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6. DISCUSSIONS 6.3 Middle-scale atm
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6. DISCUSSIONS 129 15:50:00 lb:00:0
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132 6. DISCUSSIONS It is very inter
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CAD MAGNE TOGFIRM AT STOWR STA T I
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136 7. CONCLUSIONS 5) Nighttime var
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138 REFERENCES Conde, M., and R. W.
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140 REFERENCES Hernandez, G., R. W.
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142 REFERENCES Rees, D., and A. H.
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Appendix A Sequential wind data in
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Line-of-sight neutral wind velociti
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