KIC9652632eclipsetimes.ipynb

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   "cells": [
    {
     "cell_type": "markdown",
     "metadata": {},
     "source": [
      "# Eclipses of KIC 9652632\n",
      "\n",
      "Using the mid-eclipse time and period from the [Villanova Eclipsing Binary Catalog](http://keplerebs.villanova.edu/), we compute all eclipses in the range Aug 25 - Sept 8 UT."
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import numpy as np\n",
      "from astropy.time import Time\n",
      "\n",
      "villa_t0 = 2454955.175512\n",
      "period = 4.977624\n",
      "\n",
      "# Convert UT times to JD\n",
      "startdate = Time('2014-08-25 00:00:00', format='iso', scale='utc').jd\n",
      "enddate = Time('2014-09-08 00:00:00', format='iso', scale='utc').jd\n",
      "\n",
      "# Calculate times of eclipses\n",
      "primaryeclipses = villa_t0 + period*np.arange(1000)\n",
      "secondaryeclipses = villa_t0 + period*np.arange(1000)  + 0.5*period\n",
      "\n",
      "print 'Propogated forward enough?', enddate < max(primaryeclipses), enddate < max(secondaryeclipses)\n",
      "\n",
      "primariesinrange = (primaryeclipses < enddate)*(primaryeclipses > startdate)\n",
      "secondariesinrange = (secondaryeclipses < enddate)*(secondaryeclipses > startdate)\n",
      "\n",
      "print '\\nPrimaries in date range: ',sum(primariesinrange)\n",
      "print 'Primary eclipse times (UT):\\n', '\\n'.join([Time(eclipse, format='jd',scale='utc').iso for \\\n",
      "                                    eclipse in primaryeclipses[primariesinrange]])\n",
      "\n",
      "\n",
      "print '\\nSecondaries in date range: ',sum(secondariesinrange)\n",
      "print 'Secondary eclipse times (UT):\\n', '\\n'.join([Time(eclipse, format='jd',scale='utc').iso for \\\n",
      "                                    eclipse in secondaryeclipses[secondariesinrange]])"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Propogated forward enough? True True\n",
        "\n",
        "Primaries in date range:  3\n",
        "Primary eclipse times (UT):\n",
        "2014-08-26 22:46:22.541\n",
        "2014-08-31 22:14:09.254\n",
        "2014-09-05 21:41:55.968\n",
        "\n",
        "Secondaries in date range:  2\n",
        "Secondary eclipse times (UT):\n",
        "2014-08-29 10:30:15.898\n",
        "2014-09-03 09:58:02.611\n"
       ]
      }
     ],
     "prompt_number": 26
    }
   ],
   "metadata": {}
  }
 ]
}