\relax \newlabel{Contents}{{}{i}} \newlabel{Introduction}{{}{1}} \@writefile{toc}{\contentsline {section}{\numberline {1}{\bf Introduction to the Yohkoh Instruments}}{1}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.1}Yohkoh Observing Modes}{1}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.2}Bragg Crystal Spectrometer (BCS)}{1}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {1.2.1}Instrument Modes}{1}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.3}Hard X-Ray Telescope (HXT)}{1}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.4}Soft X-Ray Telescope (SXT)}{1}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.1}Sequence Tables}{2}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.2}Automatic Exposure Control (AEC)}{3}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {1.4.3}Automatic Region Selection (ARS)}{3}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.5}Wide Band Spectrometer (WBS)}{4}} \@writefile{toc}{\contentsline {subsection}{\numberline {1.6}Spacecraft Attitude Control System (ACS)}{5}} \newlabel{BCS}{{1.6}{6}} \@writefile{toc}{\contentsline {section}{\numberline {2}{\bf Bragg Crystal Spectrometer (BCS)}}{6}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.1}Instrument Characteristics}{6}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.1.1}Wavelength Range}{6}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.1.2}Data Compression}{6}} \@writefile{lof}{\contentsline {figure}{\numberline {2.1}{\ignorespaces The BCS data compression algorithm}}{7}} \newlabel{fig_bcs_decomp}{{2.1}{7}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.2}Instrument Calibration}{7}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.2.1}Sensitivity Functions}{7}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.2.2}Wavelength Resolution}{8}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.3}Detector Performance}{8}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.3.1}Detector Gain and Energy Resolution}{8}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.3.2}Position Resolution}{8}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.3.3}Digitization Spikes}{9}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.4}Detector Background}{9}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.4.1}Energy Discrimination}{9}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.4.2}Particle Background}{9}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.4.3}Germanium Fluorescence}{9}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.4.4}Effect of Gain Depression}{9}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.5}Dynamic Range and Count Rate Effects}{10}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.5.1}Deadtime Correction}{10}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.5.2}Saturation}{10}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.5.3}Gain Depression}{11}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.5.4}Rate-dependent Distortion}{11}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.6}Data Features}{11}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.6.1}Queued Data}{11}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.6.2}Timing of Spectra}{11}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.6.3}Last Spectral Bin}{12}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.6.4}Medium-rate Spectral Data in Autumn 1991}{12}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {2.6.5}Single Event Upsets}{12}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.7}Contact Persons}{12}} \newlabel{bcs_ref}{{2.8}{12}} \@writefile{toc}{\contentsline {subsection}{\numberline {2.8}References}{12}} \newlabel{HXT}{{2.8}{13}} \@writefile{toc}{\contentsline {section}{\numberline {3}{\bf Hard X-Ray Telescope (HXT)}}{13}} \@writefile{toc}{\contentsline {subsection}{\numberline {3.1}Overview}{13}} \@writefile{toc}{\contentsline {subsection}{\numberline {3.2}General information}{13}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.2.1}Observations with HXT}{13}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.2.2}Detector gain calibration}{13}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.2.3}Background counts}{14}} \@writefile{toc}{\contentsline {subsection}{\numberline {3.3}Some detailed information}{14}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.1}Modulation patterns}{14}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.2}Spectral Energy Response}{15}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.3}Pre-storage of HXT data in DP}{15}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {3.3.4}Data compression}{15}} \@writefile{toc}{\contentsline {subsection}{\numberline {3.4}Contact Persons}{16}} \@writefile{toc}{\contentsline {subsection}{\numberline {3.5}References}{16}} \newlabel{SXT}{{3.5}{17}} \@writefile{toc}{\contentsline {section}{\numberline {4}{\bf Soft X-Ray Telescope (SXT)}}{17}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.1}Overall Response Function for SXT}{17}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.1}CCD Camera Signal}{17}} \@writefile{lof}{\contentsline {figure}{\numberline {4.2}{\ignorespaces Factors that determine the SXT effective area. Panel (a) shows the double entrance filter transmission; panel (b) shows the mirror reflectivity including the obscuration from the support structures; panel (c) shows the CCD quantum efficiency. Panel (d) is the product of panels (a), (b), and (c). }}{18}} \newlabel{fig_sxt_area1}{{4.2}{18}} \@writefile{lof}{\contentsline {figure}{\numberline {4.3}{\ignorespaces The effective area of the SXT: The thick curve shows gives the effective area for the indicated filter. The thin curve is the open filter case (no analysis filter) effective area over-plotted for comparison. }}{19}} \newlabel{fig_sxt_area2}{{4.3}{19}} \@writefile{lof}{\contentsline {figure}{\numberline {4.4}{\ignorespaces The total SXT signal as a function of $\mathop {\mathgroup \symoperators log}\nolimits _{10}(T_e)$ for the open filter and the analysis filters as indicated. NOTE: Be and Al12 are mistakenly reversed in Tsuneta {\it et al.}, (1991). }}{20}} \newlabel{fig_sxt_resp}{{4.4}{20}} \@writefile{lof}{\contentsline {figure}{\numberline {4.5}{\ignorespaces Ratios of the SXT response functions. For the curve marked ``Be119/(2$\times $Al12)'' the effective observing time with the Al12 filter has been doubled with respect to the Be119 filter. For the curve marked ``$2\times $Al12/Al.1'' the effective observing time with the Al12 filter has again been doubled, this time with respect to the Al.1 filter. }}{21}} \newlabel{fig_sxt_ratios}{{4.5}{21}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.2}SXT Effective Area}{21}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.3}Reading the SXT Effective Area File}{22}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.4}SXT Response to Thermal Plasma}{22}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.5}Reading the SXT Response Function File}{23}} \@writefile{lof}{\contentsline {figure}{\numberline {4.6}{\ignorespaces Relative alignment of the X-ray and optical images}}{24}} \newlabel{help_offsets}{{4.6}{24}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.1.6}Relative Alignment of X-Ray and Optical Images}{24}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.2}The CCD Camera}{25}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.1}Saturation Effects }{25}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.2}Effect of CCD Contamination}{25}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.3}SXT Images Taken with the CCD Warm }{26}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.4}Artifacts in Optical Images from Radiation Damage }{26}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.5}SAA Effects on Images }{26}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.6}Subtleties of Background Subtraction }{26}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.7}Charge Bleed-back}{27}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.8}CCD Pixelization}{27}} \newlabel{ccd_zero}{{4.2.9}{27}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.2.9}What is Really Zero Signal Level in Data Numbers (DN)?}{27}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.3}The Mirror, Lens or Filters}{28}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.3.1}Scattering by ND X-ray Filter }{28}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.3.2}Point Spread Function }{28}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.3.3}Mirror Scatter }{28}} \@writefile{lof}{\contentsline {figure}{\numberline {4.7}{\ignorespaces The effective area (or vignette function) as a function of off-axis angle. The solid curve was derived from \unhbox \voidb@x \hbox {C K} and \unhbox \voidb@x \hbox {Al K} data and the dashed curve from \unhbox \voidb@x \hbox {Ag L} data. }}{29}} \newlabel{fig_vignette}{{4.7}{29}} \newlabel{vignette}{{4.3.4}{29}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.3.4}Vignetting Correction}{29}} \newlabel{leak_sub}{{4.3.5}{30}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.3.5}Stray Visible Light}{30}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.4}Other Instrument and Operations Features}{31}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.1}Data Compression}{31}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.2}Use of Low-8 Images in Optical Data}{31}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.3}Filter Alternation During AEC}{32}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.4}The Roll Angle in the SXT Images}{32}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.5}Incorrect Location of Image Pieces in Some PFIs}{32}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {4.4.6}Preparation of SFD images}{33}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.5}Contact Persons}{33}} \@writefile{toc}{\contentsline {subsection}{\numberline {4.6}References}{33}} \newlabel{WBS}{{4.6}{34}} \@writefile{toc}{\contentsline {section}{\numberline {5}{\bf Wide Band Spectrometer (WBS)}}{34}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.1}Basic Instrument Characteristics}{34}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.2}Soft X-Ray Spectrometer (SXS)}{34}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.3}Hard X-Ray Spectrometer (HXS)}{35}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.4}Gamma-Ray Spectrometer (GRS)}{35}} \newlabel{wbs_energies}{{5.5}{36}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.5}WBS Output Data}{36}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.6}Contact Persons}{37}} \@writefile{toc}{\contentsline {subsection}{\numberline {5.7}References}{38}} \newlabel{ACS}{{5.7}{39}} \@writefile{toc}{\contentsline {section}{\numberline {6}{\bf Spacecraft Attitude, Ephemeris and Coordinate Systems}}{39}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.1}Spacecraft Attitude Control System (ACS)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.1}Inertial Reference Unit (IRU)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.2}Two-dimensional Fine Sun Sensor (TFSS)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.3}Star Tracker (STT)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.4}Geomagnetic Sensors (GAS)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.5}HXT Aspect Sensor (HXA)}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.1.6}Attitude Determination Software (ADS)}{39}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.2}ACS Performance}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.2.1}Pointing Accuracy}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.2.2}Spacecraft Jitter}{39}} \@writefile{toc}{\contentsline {subsubsection}{\numberline {6.2.3}Sensor Problems}{40}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.3}Instrument and Spacecraft Co-alignment}{40}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.4}Spacecraft Ephemeris}{40}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.5}Contact Persons}{40}} \@writefile{toc}{\contentsline {subsection}{\numberline {6.6}References}{40}} \@writefile{toc}{\vspace {0.2cm}} \@writefile{lof}{\contentsline {figure}{\numberline {A.8}{\ignorespaces Timing of HXT data for Hi/Hi telemetry frames}}{41}} \newlabel{timing_hxt_hh}{{A.8}{41}} \@writefile{lof}{\contentsline {figure}{\numberline 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\newlabel{Append-sxtdates}{{B}{46}} \@writefile{toc}{\contentsline {section}{\numberline {C}{\bf Dates of Significant SXT Activities}}{46}} \@writefile{toc}{\contentsline {subsection}{\numberline {C.1}Dates that SXT CCD was Baked Out}{46}} \@writefile{toc}{\contentsline {subsection}{\numberline {C.2}Table of Number of SXT Images and Dark Current Levels}{47}} \@writefile{toc}{\contentsline {subsection}{\numberline {C.3}Dates of SXT Entrance Filter Failures}{49}} \newlabel{Append-acs}{{C.3}{50}} \@writefile{toc}{\contentsline {section}{\numberline {D}{\bf Attitude Control System (ACS) Related Items}}{50}} \@writefile{toc}{\contentsline {subsection}{\numberline {D.1}Dates When Yohkoh was at non-zero Roll}{50}} \newlabel{Append-misc}{{D.1}{51}} \@writefile{toc}{\contentsline {section}{\numberline {E}{\bf Miscellaneous Yohkoh Information}}{51}} \@writefile{toc}{\contentsline {subsection}{\numberline {E.1}Amount of Yohkoh Data per Week}{51}} \newlabel{yag-manual}{{F}{54}} \@writefile{toc}{\contentsline {section}{\numberline {F}{\bf Web Version of the YAG}}{54}}