SIMPLE  =                    T  / FITS STANDARD                                 BITPIX  =                  -32  / FITS BITS/PIXEL (FLOATING POINT)              NAXIS   =                    2  / NUMBER OF AXES                                NAXIS1  =                  878  / X AXIS NO. PIX                                NAXIS2  =                  878  / Y AXIS NO. PIX                                BLANK   =           0.00000000  / ARRAY NULL VALUE (NATURAL 0.0 SET TO 1.E-10)  HISTORY Created by tiftofits version 1 on 2006-02-11 at 00:56:49                HISTORY 1-3 pixel sized dust and emulsion pits removed by Laplacian filter      HISTORY Derived from above by CAFITIMAGE on 2006-10-12 at 05:20:06              HISTORY Image:  Canonical limb darkening imposed on a flat image.               HISTORY Background:  Residuals, H & D'ed original data - off-image fit.         HISTORY                                                                         HISTORY                                                                         HISTORY                                                                         BSCALE  =            1.0000000  / REAL = DATA*BSCALE + BZERO                    BZERO   =            0.0000000  /                                               BUNIT   = 'INTENSITY'           / ARBITRARY UNITS                               ORIGIN  = 'MT. WILSON'          /                                               TELESCOP= '60 FT'               /                                               OBJECT  = 'SUN'                 /                                               DATA-TYP= 'CA SPECTROHELIOGRM'  /                                               DATE-OBS= '1981-05-04'          / YEAR-MO-DA                                    TAVG-UT =           26.5666676  / AVERAGE TIME, U.T.                            LAMBDA  =         3933.6818848  / WAVELENGTH (ANGSTROMS)                        OBS_B0  =            -3.723468  / SUN TILT                                      OBS_CR  =            1708.1154  / CARRINGTON ROTATION                           OBS_L0  =             318.4872  / LONGITUDE OF THE CENTRAL MERIDIAN             XSCALE  =              2.83177  / ARCSEC PER X PIXEL                            YSCALE  =              2.83177  / ARCSEC PER Y PIXEL                            SCALPIX1=  Infinity             / X PIXELS PER INCH                             SCALPIX2=  Infinity             / Y PIXELS PER INCH                             CRPIX1  =          467.2448425  / Ref point1.                                   CRPIX2  =          420.3820801  / Ref point2.                                   CDELT1  =           0.00297666  / Solar Scale Axis 1.                           CDELT2  =           0.00295176  / Solar Scale Axis 2.                           RX-RY   =          -2.83333325  / Radius x minus Radius y.                      GRADXP  =         115.34703827  / Average Slope X plus.                         GRADXM  =         230.05920410  / Average Slope X minus.                        GRADYP  =         122.21405029  / Average Slope Y plus.                         GRADYM  =         108.48365784  / Average Slope Y minus.                        SCSLOPXP=          27.25000000  / Scattered Light Slope X plus.                 SCSLOPXM=          60.00000000  / Scattered Light Slope X minus.                SCSLOPYP=          19.81250000  / Scattered Light Slope Y plus.                 SCSLOPYM=          15.12500000  / Scattered Light Slope Y minus.                YEAR    =                 1981  / Year                                          MONTH   =                    5  / Month                                         DAY     =                    4  / Day                                           IMAGE_NO=                    7  / Image_No                                      SCANID  =         '20060131-2'  / ScanId                                        PLATE_NO=             'CB5129'  / plate_no                                      PLTYPECD=                    3  / PlateTypeCode                                 OBSTYPE =              'K2-NS'  / ObsType                                       TIME    =           '18:34:00'  / time                                          IMAGQUAL=                    2  / Image_Qual                                    LGBOOKPG=        '810421_0504'  / Logbook_Page                                  CORANGLE=                 71.3  / Correction_angle                              LGCOMMNT=           'Hazy sky'  / LogComments                                   TGCOMMNT=                'NIL'  / TagComments                                   EXTRES  =                    1  / ExtRes                                        EXTQUAL =   0.9947119100968631  / ExtQual                                       FILENAME= 'K19810504-07-20060131-2'/ FileName                                   IMAGWDTH=                 3757  / ImageWidth                                    IMAGLNGT=                 3757  / ImageLength                                   EXSUBSAM=                    1  / ExtSubSample                                  SCRESUNI=                    2  / ScanResUnit                                   SCANXRES=    849.7700805664062  / ScanXres                                      SCANYRES=       849.8056640625  / ScanYres                                      POSINSCN=                    2  / PosInScan                                     HORPOSNM=                    1  / HorPosNum                                     HORPOS  =                  'A'  / HorPos                                        PLXOFFST=                    0  / PlateXoffset                                  PLYOFFST=                 3909  / PlateYoffset                                  IMXOFFST=                  534  / ImageXoffset                                  IMYOFFST=                 3410  / ImageYoffset                                  BACKGRND=   0.7825537522888528  / Bgmean                                        BKGSTDEV=   0.1390384874791671  / Bgstddev                                      LGDTDATE=  '2/6/2006 11:03:30'  / LogDataEntryDate                              LGSERIAL=                  NIL  / LogSerial                                     TGDTDATE=  '2/6/2006 11:44:40'  / TagDataEntryDate                              TGSERIAL=                16782  / TagSerial                                     EXFILLOC=           '/1981/5/'  / ExtFileLoc                                    SCFILLOC=       '/2006/01/31/'  / ScanFileLoc                                   SCFRAME =                    3  / ScanFrame                                     EXTDATE = 'Fri Feb 10 17:54:41 2006'/ ExtDate                                   SERIAL  =                  151  / Serial                                        NPIXDUST=                38369  / Number of dust and pit pixels replaced.       RADIUS_X=               335.95  / X-direction Radius                            RADIUS_Y=               338.78  / Y-direction Radius                            AVE_INTS=        13943.2392578  / Average Intensity Value                       AVE_IRMS=          234.3547211  / Ave. RMS Intensity Variation over 5x5 Arrays  SUNEAR_F=            0.9910988  / Sun-Earth Distance Factor                     RADSCORE=                    2  / Radius Solution Demerits, < 6 is good         COMMENT Minimum and maximum allowed fit values:                                 DRKMN_1 =             4919.549  / MINIMUM VALUE FOR OFF-IMAGE SIDES.            DRKMX_1 =             6339.419  / MAXIMUM VALUE FOR OFF-IMAGE SIDES.            DRKMN_2 =             5009.541  / MINIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM.     DRKMX_2 =             9569.124  / MAXIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM.     DRKMN_3 =            -1415.674  / MINIMUM VALUE FOR IMAGE.                      DRKMX_3 =              894.431  / MAXIMUM VALUE FOR IMAGE.                      HISTORY Fitting function for the off-image area or the image.                   HISTORY C1 - C15 are fit coefficients, R is the center-to                       HISTORY limb angle at point for the image fit;  for the background,             HISTORY R is the radius at point.  A is the angle-around-the-image,             HISTORY starting at (CRPIX1+min(RADIUS_X,RADIUS_Y),CRPIX2).                     HISTORY V is the evaluated fit value.                                           HISTORY V = C1 + C2*R**2 + C3*R**3 + C4*SIN(A)*R + C5*COS(A)*R +                HISTORY C6*SIN(A)*R**2 + C7*COS(A)*R**2 + C8*SIN(A)*R**3 +                      HISTORY C9*COS(A)*R**3 + C10*SIN(2A)*R**2 + C11*COS(2A)*R**2 +                  HISTORY C12*SIN(2A)*R**3 + C13*COS(2A)*R**3 + C14*SIN(3A)*R**3 +                HISTORY C15*COS(3A)*R**3                                                        COMMENT Background fit coefficients:                                            COFB_01 = 0.78741664618495E+00  / Background                                    COFB_02 =-0.79621251082352E-05  / Background                                    COFB_03 = 0.10495695774764E-07  / Background                                    COFB_04 =-0.76086198656066E-03  / Background                                    COFB_05 = 0.80393758811073E-03  / Background                                    COFB_06 = 0.15457545207450E-05  / Background                                    COFB_07 =-0.36968007293874E-05  / Background                                    COFB_08 = 0.16840346122481E-09  / Background                                    COFB_09 = 0.41518194757585E-08  / Background                                    COFB_10 =-0.19012034013476E-06  / Background                                    COFB_11 =-0.41401557358378E-05  / Background                                    COFB_12 = 0.48792343587409E-09  / Background                                    COFB_13 = 0.71081252804647E-08  / Background                                    COFB_14 = 0.27212858555826E-10  / Background                                    COFB_15 =-0.14353506643013E-09  / Background                                    COMMENT Image fit coefficients:                                                 COFA_01 = 0.59116679453342E+00  / Image                                         COFA_02 =-0.76851307546079E-01  / Image                                         COFA_03 =-0.50710394043018E-01  / Image                                         COFA_04 = 0.32938045611862E-01  / Image                                         COFA_05 = 0.10921299218734E+00  / Image                                         COFA_06 =-0.28139266465477E-01  / Image                                         COFA_07 =-0.27292879474425E+00  / Image                                         COFA_08 = 0.29398591789420E-01  / Image                                         COFA_09 = 0.13626955806353E+00  / Image                                         COFA_10 = 0.89731563956861E-01  / Image                                         COFA_11 = 0.21099921900655E+00  / Image                                         COFA_12 =-0.76899801535573E-01  / Image                                         COFA_13 =-0.15824134430232E+00  / Image                                         COFA_14 = 0.23863752542791E-02  / Image                                         COFA_15 = 0.78712428755680E-02  / Image                                         COMMENT Canonical limb darkening coefficients:                                  COMMENT V = 1.0 - 0.2187436*X - 0.2759476*X**2 - 0.4847618*X**10                CANCAK_1=                  1.0  / X = 1. - COS(RHO)                             CANCAK_2=            0.2187436  / RHO=Center-to-limb angle                      CANCAK_3=            0.2759476  /                                               CANCAK_4=            0.4847618  /                                               HISTORY  Linearized according to the characteristic stepwedge curve,            COMMENT  V is the linearized intensity:                                         COMMENT  TIN = input scanner value, higher value = more light                   COMMENT  TINL = TIN/(32767. - TIN)                                              COMMENT  TBIA = ABS(TINL - YMIN)                                                COMMENT  V = (TBIA/ALPHA)**(1./GAMMA)                                           COMMENT  If TINL-YMIN is negative, V = -V                                       ALPHA   =           0.48972440  / H & D calibration parameter                   GAMMA   =           1.45384634  / H & D calibration parameter                   YMIN    =           0.18855260  / H & D calibration parameter                   END