SIMPLE = T / FITS STANDARD BITPIX = -32 / FITS BITS/PIXEL (FLOATING POINT) NAXIS = 2 / NUMBER OF AXES NAXIS1 = 874 / X AXIS NO. PIX NAXIS2 = 874 / 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 01:18:20 HISTORY 1-3 pixel sized dust and emulsion pits removed by Laplacian filter HISTORY Derived from above by CAFITIMAGE on 2006-10-12 at 05:22:14 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= '1981-05-21' / YEAR-MO-DA TAVG-UT = 26.3333340 / AVERAGE TIME, U.T. LAMBDA = 3933.6818848 / WAVELENGTH (ANGSTROMS) OBS_B0 = -1.819838 / SUN TILT OBS_CR = 1708.7395 / CARRINGTON ROTATION OBS_L0 = 93.7951 / LONGITUDE OF THE CENTRAL MERIDIAN XSCALE = 2.84382 / ARCSEC PER X PIXEL YSCALE = 2.84382 / ARCSEC PER Y PIXEL SCALPIX1= Infinity / X PIXELS PER INCH SCALPIX2= Infinity / Y PIXELS PER INCH CRPIX1 = 442.0234680 / Ref point1. CRPIX2 = 397.5857239 / Ref point2. CDELT1 = 0.00300030 / Solar Scale Axis 1. CDELT2 = 0.00298473 / Solar Scale Axis 2. RX-RY = -1.73954260 / Radius x minus Radius y. GRADXP = 111.34053040 / Average Slope X plus. GRADXM = 113.10926819 / Average Slope X minus. GRADYP = 162.15676880 / Average Slope Y plus. GRADYM = 166.56765747 / Average Slope Y minus. SCSLOPXP= 28.62500000 / Scattered Light Slope X plus. SCSLOPXM= 19.81250000 / Scattered Light Slope X minus. SCSLOPYP= 39.00000000 / Scattered Light Slope Y plus. SCSLOPYM= 15.81250000 / Scattered Light Slope Y minus. YEAR = 1981 / Year MONTH = 5 / Month DAY = 21 / Day IMAGE_NO= 27 / Image_No SCANID = '20060131-4' / ScanId PLATE_NO= 'CB5139' / plate_no PLTYPECD= 3 / PlateTypeCode OBSTYPE = 'K2-NS' / ObsType TIME = '18:20:00' / time IMAGQUAL= 2 / Image_Qual LGBOOKPG= '810505_0522' / Logbook_Page CORANGLE= 75.3 / Correction_angle LGCOMMNT= 'Foggy! May 18-20' / LogComments TGCOMMNT= 'NIL' / TagComments EXTRES = 1 / ExtRes EXTQUAL = 0.9753758317615004 / ExtQual FILENAME= 'K19810521-27-20060131-4'/ FileName IMAGWDTH= 3755 / ImageWidth IMAGLNGT= 3755 / ImageLength EXSUBSAM= 1 / ExtSubSample SCRESUNI= 2 / ScanResUnit SCANXRES= 849.6376953125 / ScanXres SCANYRES= 849.8580322265625 / ScanYres POSINSCN= 4 / PosInScan HORPOSNM= 1 / HorPosNum HORPOS = 'A' / HorPos PLXOFFST= 0 / PlateXoffset PLYOFFST= 11727 / PlateYoffset IMXOFFST= 553 / ImageXoffset IMYOFFST= 10620 / ImageYoffset BACKGRND= 0.7793994162011245 / Bgmean BKGSTDEV= 0.1023985635991967 / Bgstddev LGDTDATE= '2/6/2006 11:03:30' / LogDataEntryDate LGSERIAL= NIL / LogSerial TGDTDATE= '2/6/2006 12:06:21' / TagDataEntryDate TGSERIAL= 16792 / TagSerial EXFILLOC= '/1981/5/' / ExtFileLoc SCFILLOC= '/2006/01/31/' / ScanFileLoc SCFRAME = 3 / ScanFrame EXTDATE = 'Fri Feb 10 18:24:54 2006'/ ExtDate SERIAL = 171 / Serial NPIXDUST= 73345 / Number of dust and pit pixels replaced. RADIUS_X= 333.30 / X-direction Radius RADIUS_Y= 335.04 / Y-direction Radius AVE_INTS= 13488.1464844 / Average Intensity Value AVE_IRMS= 197.3996277 / Ave. RMS Intensity Variation over 5x5 Arrays SUNEAR_F= 0.9874645 / Sun-Earth Distance Factor RADSCORE= 1 / Radius Solution Demerits, < 6 is good COMMENT Minimum and maximum allowed fit values: DRKMN_1 = 5189.525 / MINIMUM VALUE FOR OFF-IMAGE SIDES. DRKMX_1 = 7039.355 / MAXIMUM VALUE FOR OFF-IMAGE SIDES. DRKMN_2 = 5019.541 / MINIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM. DRKMX_2 = 10309.056 / MAXIMUM VALUE FOR OFF-IMAGE TOP & BOTTOM. DRKMN_3 = -1095.428 / MINIMUM VALUE FOR IMAGE. DRKMX_3 = 705.530 / 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 = 0.32076654269949E+00 / Background COFB_02 =-0.32186381150742E-05 / Background COFB_03 = 0.38920855283986E-08 / Background COFB_04 =-0.91924400042878E-04 / Background COFB_05 = 0.22226033226502E-03 / Background COFB_06 =-0.20663548876302E-06 / Background COFB_07 =-0.10888744499568E-05 / Background COFB_08 = 0.16920640002841E-09 / Background COFB_09 = 0.13592943118679E-08 / Background COFB_10 =-0.97007598999938E-07 / Background COFB_11 =-0.25376096554080E-05 / Background COFB_12 = 0.19064646018374E-09 / Background COFB_13 = 0.55030169579059E-08 / Background COFB_14 = 0.33640649362750E-09 / Background COFB_15 =-0.51417360410814E-10 / Background COMMENT Image fit coefficients: COFA_01 = 0.34580675773467E+00 / Image COFA_02 =-0.11709209868309E+00 / Image COFA_03 = 0.11393860459936E-01 / Image COFA_04 =-0.67859105558282E-01 / Image COFA_05 = 0.34978533440430E-01 / Image COFA_06 = 0.75498020142759E-01 / Image COFA_07 =-0.63917643422877E-01 / Image COFA_08 =-0.20119735213881E-01 / Image COFA_09 = 0.31916089820058E-01 / Image COFA_10 = 0.43626703962149E-01 / Image COFA_11 = 0.44477969530766E-01 / Image COFA_12 =-0.32678670325242E-01 / Image COFA_13 =-0.50393094789364E-01 / Image COFA_14 = 0.21568437380509E-02 / Image COFA_15 =-0.38636869556043E-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 = 0.95354599 / H & D calibration parameter GAMMA = 1.01023197 / H & D calibration parameter YMIN = 0.21547370 / H & D calibration parameter END > >J>4?>>1>!>>H>r>3>c>Q>>D>>m>>>> >O(>>k,>ET>?a?>+>p>>>W>>>>S>1>4>x>sv>b>[r>N>4>0>(O>_>===9d=_c=/c<3'='=Db=> :~S=2j==a9Ձ.R<%=,= <=bz==7=7zw0<<Љ=>M> >_>eT>LΆ>6=m=kԘ==g=l`p=:=))=' =>=ضr=a= ݣ>&N==4)=<(l<+]=oR=Vr=,==u<';wh