; UMBRAPHILE DATA FILE FOR 11 AUGUST 1999 TOTAL SOLAR ECLIPSE ; FOR UMBRAPHILE 2.2.2 (OK for earlier versions, *MUST* use this file for 2.2.2) SOURCE = 'USNOAA' ; Must be 'USNOAA' or 'NASARP' DTYPE = 'TRIG' ; Must be 'TRIG' or 'DIRECT' ; ; PARAMETERS FOR COMPUTING BESSELIAN ELEMENTS - USNO STYLE ; Range = 0.375, 5.842 ; Range in UT for valid coefficients T0 = 8 ; Base time for series expansion DELTAT = 0 ; Delta-T in seconds (0 if U.T. elements*) XCOEF = -1.55306219, 0.54433104 0.00003154, -0.00000807 YCOEF = 0.85499208, -0.11775747, -0.00013090, -0.00000169 SINDCOEF = 0.26493686, -0.00020224, 0.00000005, -0.00000000 COSDCOEF = 0.96426579, 0.00005553, 0.00000000, 0.00000000 MUCOEF = 298.67778677, 15.00297049, 0.00000218, -0.00000004, -0.00417807 l1COEF = 0.54203962, 0.00018652, -0.00001170, 0.0 l2COEF = -0.00432418, 0.00018558, -0.00001165, 0.0 tanf1 = 0.004613 ; Umbral Shadow tanf2 = 0.004590 ; Penumbral Shadow SD = 15, 19, 48 ; Solar Declination at Mid-Eclipse MUP = 0.261851 ; Time derivative of MU in radians/hour ; ; * Note: Delta-T = +65.0 seconds is "built-in" to these polynomial ; representations of the Besselian elements. For a different value ; of absolute Delta-T set DELTAT = Delta-T minus 65.0. ; ; CAMERA CONTROLLER PARAMETERS NUMEXP = 36 ; Number of Exposures (*MUST* be even) MAXEXP = 1.5 ; Maximum Exposure Time (seconds) MINEXP = 0.01 ; Minimum Exposure Time (seconds) CIIOFF = 0 ; Time Offset (seconds) from Computed CII DRNUM = 4 ; Number of CII and CIII Diamond Ring Exposures (MUST be even) DREXP = 0.01 ; Duration (seconds) for Diamond Ring Exposures DRSEQII = -4, -3, -2, -1 ; Delta-Times for DREXP Relative to CII DRSEQIII = 1, 2, 4, 6 ; Delta-Times for DREXP Relative to CIII