Telescope: NASA IRTF, Mauna Kea Instrument: MIRSI Date: 2005 July 13 UT Conditions: Broken cirrus, humidity 5-61%, 0.65" seeing, light winds File Object UT Date UT Time Airmass Bandpass Itime Frame Time Mode Start Finish (micron) (sec) (msec) m20050713_0024.fit HR 5340 2005-07-13 03:00:49 03:01:05 1.163 8.7 1.0 90 Chop/Nod m20050713_0025.fit HR 5340 2005-07-13 03:01:41 03:01:57 1.160 8.7 1.0 90 Chop/Nod m20050713_0028.fit HR 5340 2005-07-13 03:06:14 03:06:30 1.148 9.8 1.0 75 Chop/Nod m20050713_0029.fit HR 5340 2005-07-13 03:07:28 03:07:44 1.145 11.6 1.0 75 Chop/Nod m20050713_0030.fit HR 5340 2005-07-13 03:08:21 03:08:37 1.142 11.6 1.0 75 Chop/Nod m20050713_0031.fit HR 5340 2005-07-13 03:09:13 03:09:29 1.140 12.5 1.0 75 Chop/Nod m20050713_0032.fit HR 5340 2005-07-13 03:10:08 03:10:26 1.138 12.5 1.0 60 Chop/Nod m20050713_0033.fit HR 5340 2005-07-13 03:10:54 03:11:12 1.136 12.5 1.0 60 Chop/Nod m20050713_0034.fit HR 5340 2005-07-13 03:12:06 03:12:38 1.133 18.4 1.0 24 Chop/Nod m20050713_0035.fit HR 5340 2005-07-13 03:13:07 03:13:25 1.130 18.4 1.0 60 Chop/Nod m20050713_0036.fit HR 5340 2005-07-13 03:14:13 03:14:33 1.128 18.4 1.0 48 Chop/Nod m20050713_0037.fit HR 5340 2005-07-13 03:15:15 03:15:35 1.125 18.4 1.0 48 Chop/Nod m20050713_0038.fit HR 5340 2005-07-13 03:16:35 03:17:17 1.122 18.4 2.0 48 Chop/Nod m20050713_0039.fit HR 5340 2005-07-13 03:19:10 03:21:46 1.116 18.4 10.0 48 Chop/Nod m20050713_0040.fit HR 5340 2005-07-13 03:23:06 03:25:42 1.107 4.9 10.0 48 Chop/Nod m20050713_0041.fit HR 5340 2005-07-13 03:25:19 03:25:33 1.103 4.9 1.0 150 Chop/Nod m20050713_0042.fit HR 5340 2005-07-13 03:26:13 03:26:27 1.101 4.9 1.0 150 Chop/Nod m20050713_0043.fit HR 5340 2005-07-13 03:28:14 03:28:46 1.097 10.4 1.0 24 Chop/Nod m20050713_0044.fit HR 5340 2005-07-13 03:29:23 03:29:55 1.094 10.4 1.0 24 Chop/Nod m20050713_0045.fit HR 5315 2005-07-13 03:33:59 03:34:55 1.085 8.7 5.0 90 Chop/Nod m20050713_0046.fit HR 5315 2005-07-13 03:35:55 03:36:39 1.082 8.7 5.0 150 Chop/Nod m20050713_0047.fit HR 5315 2005-07-13 03:38:13 03:38:57 1.078 11.6 5.0 150 Chop/Nod m20050713_0048.fit HR 5315 2005-07-13 03:39:42 03:40:26 1.075 11.6 5.0 150 Chop/Nod m20050713_0049.fit 9P/Tempel 1 2005-07-13 03:43:20 03:44:52 1.252 11.6 10.0 120 Chop/Nod m20050713_0050.fit 9P/Tempel 1 2005-07-13 03:45:35 03:47:23 1.248 11.6 10.0 90 Chop/Nod m20050713_0051.fit 9P/Tempel 1 2005-07-13 03:49:49 03:55:03 1.240 11.6 30.0 90 Chop/Nod m20050713_0052.fit 9P/Tempel 1 2005-07-13 03:55:45 04:00:41 1.231 11.6 30.0 90 Chop/Nod m20050713_0053.fit 9P/Tempel 1 2005-07-13 04:03:30 04:08:46 1.221 10.4 15.0 36 Chop/Nod m20050713_0054.fit 9P/Tempel 1 2005-07-13 04:12:15 04:14:03 1.211 11.6 10.0 90 Chop/Nod m20050713_0055.fit 9P/Tempel 1 2005-07-13 04:16:20 04:21:34 1.207 11.6 30.0 90 Chop/Nod m20050713_0056.fit 9P/Tempel 1 2005-07-13 04:22:10 04:27:24 1.202 11.6 30.0 90 Chop/Nod m20050713_0057.fit 9P/Tempel 1 2005-07-13 04:27:40 04:32:54 1.198 11.6 30.0 90 Chop/Nod m20050713_0058.fit HR 5315 2005-07-13 04:33:16 04:34:12 1.012 11.6 5.0 90 Chop/Nod m20050713_0059.fit HR 5315 2005-07-13 04:34:49 04:35:45 1.011 11.6 5.0 90 Chop/Nod m20050713_0060.fit HR 5315 2005-07-13 04:36:16 04:37:12 1.010 11.6 5.0 90 Chop/Nod m20050713_0061.fit HR 5315 2005-07-13 04:38:45 04:39:41 1.009 8.7 5.0 90 Chop/Nod m20050713_0062.fit 9P/Tempel 1 2005-07-13 04:42:10 04:43:56 1.192 8.7 10.0 90 Chop/Nod m20050713_0063.fit 9P/Tempel 1 2005-07-13 04:45:36 04:47:22 1.191 11.6 10.0 90 Chop/Nod m20050713_0064.fit 9P/Tempel 1 2005-07-13 04:47:55 04:49:41 1.190 11.6 10.0 90 Chop/Nod m20050713_0065.fit 9P/Tempel 1 2005-07-13 04:51:50 04:53:46 1.190 11.6 10.0 90 Chop/Nod m20050713_0066.fit 9P/Tempel 1 2005-07-13 04:55:25 04:57:21 1.190 11.6 10.0 90 Chop/Nod m20050713_0067.fit 9P/Tempel 1 2005-07-13 04:58:16 05:00:12 1.191 11.6 10.0 90 Chop/Nod m20050713_0068.fit 9P/Tempel 1 2005-07-13 05:00:52 05:02:48 1.191 11.6 10.0 90 Chop/Nod m20050713_0069.fit 9P/Tempel 1 2005-07-13 05:08:08 05:10:04 1.193 11.6 10.0 90 Chop/Nod m20050713_0070.fit 9P/Tempel 1 2005-07-13 05:10:42 05:12:38 1.194 11.6 10.0 90 Chop/Nod Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 July 13. (Precipitable water vapor above the summit of Mauna Kea can be approximated by pwv (mm) ~ 20 * Tau (225 GHz), ie: for Tau (225 GHz) ~ 0.10, pwv ~ 2 mm). UT Tau (225 GHz) 02:54 0.096 03:04 0.104 03:13 0.095 03:24 0.084 03:34 0.097 03:43 0.093 03:54 0.105 04:04 0.11 04:13 0.106 04:24 0.098 04:34 0.103 04:43 0.095 04:54 0.112 05:04 0.096 05:13 0.111