; UMBRAPHILE DATA FILE FOR 01 AUG 2008 TOTAL SOLAR ECLIPSE ; FOR UMBRAPHILE X (and 2006 B) ; For an explanation see: http://nicmosis.as.arizona.edu:8000/ ; SOURCE = 'USNOAA' ; Must be 'USNOAA' or 'NASARP' DTYPE = 'TRIG' ; Must be 'TRIG' or 'DIRECT' ; ; POLYNOMICAL COEFFICIENTS AND ELEMENTS FOR FOR COMPUTING BESSELIAN ELEMENTS ; Range = -0.042, 4.808 ; Range in TDT for valid coefficients T0 = 8 ; Base time for series expansion DELTAT = -0.37381 ; Delta-T in seconds (0 if U.T. elements*) XCOEF = -0.94591516, 0.52873318 -0.00001517, -0.00000812 YCOEF = 1.25129252, -0.20188452, -0.00017084, 0.00000330 SINDCOEF = 0.30715039, -0.00016771, -0.00000014, 0.00000001 COSDCOEF = 0.95166098, 0.00005419, 0.00000000, 0.00000000 ; DCOEF = 0.00000000, 0.00000000, 0.00000000, 0.00000000 MUCOEF = 298.42103964, 15.00200439, 0.00000199, -0.00000001, -0.00417807 l1COEF = 0.53798726, 0.00015867, -0.00001199, 0.00000000 ; Umbra l2COEF = -0.00835641, 0.00015808, -0.00001201, 0.00000001 ; Penumbra tanf1 = 0.004607 ; Umbral Shadow tanf2 = 0.004584 ; Penumbral Shadow SD = 17, 51, 56.5 ; Solar Declination at Mid-Eclipse MUP = 0.261834 ; Time derivative of MU in radians/hour ; ; Notes: (1) Delta-T = +66.0 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 66.0. ; (2) A correction of (+0.50", - 0.25") has been applied to the ; latitude and longitude of the moon to compensate for the ; displacement of the mean center of figure from the dynamical ; center of mass. ; ; ANCILLARY INFORMATION ; UT of Mid-Eclipse (geocentric conjunction) = 10h 21m 08.1s ; ; SPECIAL PATCHES FOR AIRCRAFT: DURADJUST = 1.000 ; ; CAMERA CONTROLLER PARAMETERS NUMEXP = 36 ; Number of Exposures (*MUST* be even) MAXEXP = 0.25 ; Maximum Exposure Time (seconds) MINEXP = 0.01 ; Minimum Exposure Time (seconds) ALARM = 20 ; Time For Audio Alarm Before CII (seconds; min = 10) MAXDCYC = 100 ; Maximum Solenoid Duty Cycle - Warn if exceeded ; Note: Set MAXDCYC = 100 to always supress warning ; ; ELECTRONIC CAMERA SETUP AND CALIBRATION PARAMETERS (eg. Pentaz ZX-50) ZEROEXP = 0.010 ; Send an exposure 1s before first to initialize camera shutter PREPULSE = 0.010 ; Duration of Pre-exposure Shutter Conditioning Pulse DELPULSE = 0.050 ; Delay time between Shutter Conditioning Pulse and Open MINRESP = 0.015 ; Minimum Response Time MINCMD = 0.053 ; Minimum Reliable Command Time CAMERCAL = -119.09, 1.0062, 0.00065224, -0.000000545 ; Camera calibration curve ; ; DIAMOND RING/CONTACT II+III PARAMETERS CIIOFF = -1.8 ; Contact II offset from smooth dynamical limb CIIIOFF = -2.5 ; Contact III offset from smooth dynamical limb DRNUM = 3 ; Number of CII and CIII Diamond Ring Exposures DREXP = 0.01 ; Duration (seconds) for Diamond Ring Exposures DRSEQII = -6, -4, -2 ; Delta-Times for DREXP Relative to CII DRSEQIII = 6, 4, 2 ; Delta-Times for DREXP Relative to CIII