SIMPLE  =                    T  / FITS STANDARD                                 BITPIX  =                  -32  / FITS BITS/PIXEL (FLOATING POINT)              NAXIS   =                    2  / NUMBER OF AXES                                NAXIS1  =                  872  / X AXIS NO. PIX                                NAXIS2  =                  872  / 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 03:21:49                HISTORY 1-3 pixel sized dust and emulsion pits removed by Laplacian filter      HISTORY Derived from above by CAFITIMAGE on 2006-10-12 at 05:35:09              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= '1981-08-01'          / YEAR-MO-DA                                    TAVG-UT =           25.1333332  / AVERAGE TIME, U.T.                            LAMBDA  =         3933.6818848  / WAVELENGTH (ANGSTROMS)                        OBS_B0  =             5.872685  / SUN TILT                                      OBS_CR  =            1711.3843  / CARRINGTON ROTATION                           OBS_L0  =             221.6433  / LONGITUDE OF THE CENTRAL MERIDIAN             XSCALE  =              2.85434  / ARCSEC PER X PIXEL                            YSCALE  =              2.85434  / ARCSEC PER Y PIXEL                            SCALPIX1=  Infinity             / X PIXELS PER INCH                             SCALPIX2=  Infinity             / Y PIXELS PER INCH                             CRPIX1  =          425.0920410  / Ref point1.                                   CRPIX2  =          427.4359436  / Ref point2.                                   CDELT1  =           0.00301848  / Solar Scale Axis 1.                           CDELT2  =           0.00299289  / Solar Scale Axis 2.                           RX-RY   =          -2.83333325  / Radius x minus Radius y.                      GRADXP  =          80.49333191  / Average Slope X plus.                         GRADXM  =         129.03666687  / Average Slope X minus.                        GRADYP  =         106.63410950  / Average Slope Y plus.                         GRADYM  =          94.32118988  / Average Slope Y minus.                        SCSLOPXP=          22.50000000  / Scattered Light Slope X plus.                 SCSLOPXM=          24.93750000  / Scattered Light Slope X minus.                SCSLOPYP=          23.25000000  / Scattered Light Slope Y plus.                 SCSLOPYM=          16.87500000  / Scattered Light Slope Y minus.                YEAR    =                 1981  / Year                                          MONTH   =                    8  / Month                                         DAY     =                    1  / Day                                           IMAGE_NO=                    2  / Image_No                                      SCANID  =         '20060208-8'  / ScanId                                        PLATE_NO=             'CB5208'  / plate_no                                      PLTYPECD=                    3  / PlateTypeCode                                 OBSTYPE =              'K2-SN'  / ObsType                                       TIME    =           '17:08:00'  / time                                          IMAGQUAL=                    2  / Image_Qual                                    LGBOOKPG=        '810728_0808'  / Logbook_Page                                  CORANGLE=                105.2  / Correction_angle                              LGCOMMNT=                'NIL'  / LogComments                                   TGCOMMNT=                'NIL'  / TagComments                                   EXTRES  =                    1  / ExtRes                                        EXTQUAL =   0.9946352564002838  / ExtQual                                       FILENAME= 'K19810801-02-20060208-8'/ FileName                                   IMAGWDTH=                 3757  / ImageWidth                                    IMAGLNGT=                 3757  / ImageLength                                   EXSUBSAM=                    1  / ExtSubSample                                  SCRESUNI=                    2  / ScanResUnit                                   SCANXRES=    849.7966918945312  / ScanXres                                      SCANYRES=    849.9100341796875  / ScanYres                                      POSINSCN=                    4  / PosInScan                                     HORPOSNM=                    2  / HorPosNum                                     HORPOS  =                  'B'  / HorPos                                        PLXOFFST=                    0  / PlateXoffset                                  PLYOFFST=                11728  / PlateYoffset                                  IMXOFFST=                 4268  / ImageXoffset                                  IMYOFFST=                10557  / ImageYoffset                                  BACKGRND=   0.7442728313115121  / Bgmean                                        BKGSTDEV=  0.07917960277602296  / Bgstddev                                      LGDTDATE=  '2/6/2006 11:03:30'  / LogDataEntryDate                              LGSERIAL=                  NIL  / LogSerial                                     TGDTDATE= '2/10/2006 12:06:55'/ TagDataEntryDate                                TGSERIAL=                17143  / TagSerial                                     EXFILLOC=           '/1981/8/'  / ExtFileLoc                                    SCFILLOC=       '/2006/02/08/'  / ScanFileLoc                                   SCFRAME =                    3  / ScanFrame                                     EXTDATE = 'Fri Feb 10 22:07:33 2006'/ ExtDate                                   SERIAL  =                  311  / Serial                                        NPIXDUST=                35170  / Number of dust and pit pixels replaced.       RADIUS_X=               331.29  / X-direction Radius                            RADIUS_Y=               334.13  / Y-direction Radius                            AVE_INTS=        13996.2421875  / Average Intensity Value                       AVE_IRMS=          202.3378448  / Ave. RMS Intensity Variation over 5x5 Arrays  SUNEAR_F=            0.9851403  / Sun-Earth Distance Factor                     RADSCORE=                    2  / Radius Solution Demerits, < 6 is good         COMMENT Minimum and maximum allowed fit values:                                 DRKMN_1 =             6899.368  / MINIMUM VALUE FOR OFF-IMAGE SIDES.            DRKMX_1 =             8569.215  / MAXIMUM VALUE FOR OFF-IMAGE SIDES.            DRKMN_2 =             6739.383  / MINIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM.     DRKMX_2 =            11078.985  / MAXIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM.     DRKMN_3 =             -943.274  / MINIMUM VALUE FOR IMAGE.                      DRKMX_3 =              626.779  / 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 = 0.10221689902381E+00  / Background                                    COFB_02 =-0.83827397261750E-06  / Background                                    COFB_03 = 0.10145752212829E-08  / Background                                    COFB_04 = 0.15652190056879E-03  / Background                                    COFB_05 =-0.74601181683239E-04  / Background                                    COFB_06 =-0.53546549143232E-06  / Background                                    COFB_07 = 0.40785294752831E-06  / Background                                    COFB_08 = 0.55588828256171E-09  / Background                                    COFB_09 =-0.49495265038249E-09  / Background                                    COFB_10 =-0.17247735537627E-07  / Background                                    COFB_11 =-0.71118694771828E-06  / Background                                    COFB_12 = 0.48279568021536E-10  / Background                                    COFB_13 = 0.15583094886295E-08  / Background                                    COFB_14 =-0.65651573824576E-10  / Background                                    COFB_15 = 0.17332911306197E-10  / Background                                    COMMENT Image fit coefficients:                                                 COFA_01 = 0.13535033895807E+00  / Image                                         COFA_02 =-0.64078871369294E-01  / Image                                         COFA_03 = 0.11830975067611E-01  / Image                                         COFA_04 = 0.31082675131301E-01  / Image                                         COFA_05 =-0.26777064703124E-01  / Image                                         COFA_06 =-0.16060864128519E-01  / Image                                         COFA_07 = 0.41639538844711E-01  / Image                                         COFA_08 = 0.10421683702168E-02  / Image                                         COFA_09 =-0.16984507380045E-01  / Image                                         COFA_10 = 0.42482878214321E-02  / Image                                         COFA_11 =-0.79127803319067E-02  / Image                                         COFA_12 = 0.27792527588703E-03  / Image                                         COFA_13 =-0.11896093876670E-02  / Image                                         COFA_14 =-0.13601660323635E-02  / Image                                         COFA_15 = 0.81232561398893E-03  / 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   =           1.73948860  / H & D calibration parameter                   GAMMA   =           0.67595011  / H & D calibration parameter                   YMIN    =           0.16975664  / H & D calibration parameter                   END