Telescope: NASA IRTF, Mauna Kea Instrument: MIRSI Date: 2005 July 05 UT Conditions: No clouds, humidity 5-70%, 1.8" seeing, light winds File Object UT Date UT Time Airmass Bandpass Itime Frame Time Mode Start Finish (micron) (sec) (msec) m20050705_0017.fit HR 5340 2005-07-05 03:02:48 03:03:04 1.262 7.7 1.0 24 Chop/Nod m20050705_0018.fit HR 5340 2005-07-05 03:03:25 03:03:41 1.260 7.7 1.0 24 Chop/Nod m20050705_0019.fit HR 5340 2005-07-05 03:05:09 03:05:25 1.253 9.8 1.0 24 Chop/Nod m20050705_0020.fit HR 5340 2005-07-05 03:05:46 03:06:02 1.250 9.8 1.0 24 Chop/Nod m20050705_0021.fit HR 5340 2005-07-05 03:08:13 03:08:29 1.241 11.6 1.0 24 Chop/Nod m20050705_0022.fit HR 5340 2005-07-05 03:08:48 03:09:04 1.239 11.6 1.0 24 Chop/Nod m20050705_0023.fit HR 5340 2005-07-05 03:09:51 03:10:07 1.235 12.5 1.0 24 Chop/Nod m20050705_0024.fit HR 5340 2005-07-05 03:10:26 03:10:42 1.233 12.5 1.0 24 Chop/Nod m20050705_0025.fit HR 5340 2005-07-05 03:11:47 03:12:11 1.228 10.4 1.0 12 Chop/Nod m20050705_0026.fit HR 5340 2005-07-05 03:12:39 03:13:03 1.225 10.4 1.0 12 Chop/Nod m20050705_0027.fit HR 5340 2005-07-05 03:13:48 03:14:12 1.221 18.4 1.0 12 Chop/Nod m20050705_0028.fit HR 5340 2005-07-05 03:14:42 03:15:06 1.218 18.4 1.0 12 Chop/Nod m20050705_0029.fit HR 5340 2005-07-05 03:15:45 03:16:09 1.214 18.4 1.0 12 Chop/Nod m20050705_0033.fit 9P/Tempel 1 2005-07-05 03:28:22 03:30:22 1.280 10.4 10.0 24 Chop/Nod m20050705_0034.fit 9P/Tempel 1 2005-07-05 03:30:53 03:32:53 1.273 10.4 10.0 24 Chop/Nod m20050705_0035.fit 9P/Tempel 1 2005-07-05 03:33:37 03:35:37 1.266 10.4 10.0 24 Chop/Nod m20050705_0036.fit 9P/Tempel 1 2005-07-05 03:39:57 03:41:57 1.250 7.7 10.0 24 Chop/Nod m20050705_0037.fit 9P/Tempel 1 2005-07-05 03:44:40 03:46:40 1.239 8.7 10.0 24 Chop/Nod m20050705_0038.fit 9P/Tempel 1 2005-07-05 03:47:28 03:48:60 1.233 8.7 10.0 60 Chop/Nod m20050705_0039.fit 9P/Tempel 1 2005-07-05 03:50:17 03:53:15 1.227 8.7 20.0 60 Chop/Nod m20050705_0040.fit 9P/Tempel 1 2005-07-05 03:54:37 03:57:35 1.219 7.7 20.0 60 Chop/Nod m20050705_0041.fit 9P/Tempel 1 2005-07-05 04:00:05 04:03:03 1.209 9.8 20.0 60 Chop/Nod m20050705_0042.fit 9P/Tempel 1 2005-07-05 04:03:20 04:06:18 1.203 9.8 20.0 60 Chop/Nod m20050705_0043.fit 9P/Tempel 1 2005-07-05 04:11:43 04:14:41 1.190 11.6 20.0 60 Chop/Nod m20050705_0044.fit 9P/Tempel 1 2005-07-05 04:14:59 04:17:57 1.186 11.6 20.0 60 Chop/Nod m20050705_0045.fit 9P/Tempel 1 2005-07-05 04:19:00 04:21:58 1.181 18.4 20.0 60 Chop/Nod m20050705_0046.fit 9P/Tempel 1 2005-07-05 04:23:45 04:26:43 1.175 18.4 20.0 60 Chop/Nod m20050705_0047.fit 9P/Tempel 1 2005-07-05 04:27:29 04:30:27 1.172 12.5 20.0 60 Chop/Nod m20050705_0048.fit 9P/Tempel 1 2005-07-05 04:30:49 04:33:47 1.168 12.5 20.0 60 Chop/Nod m20050705_0049.fit 9P/Tempel 1 2005-07-05 04:35:33 04:37:45 1.164 4.9 20.0 120 Chop/Nod m20050705_0050.fit 9P/Tempel 1 2005-07-05 04:39:51 04:41:51 1.161 10.4 10.0 24 Chop/Nod m20050705_0051.fit HR 5340 2005-07-05 04:44:21 04:44:45 1.030 10.4 1.0 12 Chop/Nod m20050705_0052.fit HR 5340 2005-07-05 04:47:35 04:47:51 1.026 8.7 1.0 24 Chop/Nod m20050705_0053.fit HR 5340 2005-07-05 04:49:31 04:49:47 1.024 9.8 1.0 24 Chop/Nod m20050705_0054.fit HR 5340 2005-07-05 04:49:58 04:50:14 1.024 9.8 1.0 24 Chop/Nod m20050705_0055.fit HR 5340 2005-07-05 04:50:53 04:51:09 1.023 11.6 1.0 24 Chop/Nod m20050705_0056.fit HR 5340 2005-07-05 04:52:20 04:52:36 1.022 12.5 1.0 24 Chop/Nod m20050705_0057.fit HR 5340 2005-07-05 04:53:15 04:53:31 1.021 18.4 1.0 24 Chop/Nod m20050705_0058_dark.fit Dark 2005-07-05 04:55:38 04:56:06 10.0 24 Grab m20050705_0059_dark.fit Dark 2005-07-05 04:56:03 04:56:31 10.0 24 Grab m20050705_0060_dark.fit Dark 2005-07-05 04:56:27 04:56:55 10.0 24 Grab m20050705_0061_dark.fit Dark 2005-07-05 04:56:52 04:57:20 10.0 24 Grab m20050705_0062_dark.fit Dark 2005-07-05 04:57:16 04:57:44 10.0 24 Grab m20050705_0063_dark.fit Dark 2005-07-05 04:57:42 04:58:03 10.0 60 Grab m20050705_0064_dark.fit Dark 2005-07-05 04:58:01 04:58:22 10.0 60 Grab m20050705_0065_dark.fit Dark 2005-07-05 04:58:21 04:58:42 10.0 60 Grab m20050705_0066_dark.fit Dark 2005-07-05 04:58:40 04:59:01 10.0 60 Grab m20050705_0067_dark.fit Dark 2005-07-05 04:59:00 04:59:21 10.0 60 Grab m20050705_0068_dark.fit Dark 2005-07-05 05:00:32 05:01:15 20.0 60 Grab m20050705_0069_dark.fit Dark 2005-07-05 05:01:04 05:01:47 20.0 60 Grab m20050705_0070_dark.fit Dark 2005-07-05 05:01:37 05:02:20 20.0 60 Grab m20050705_0071_dark.fit Dark 2005-07-05 05:02:10 05:02:53 20.0 60 Grab m20050705_0072_dark.fit Dark 2005-07-05 05:02:43 05:03:26 20.0 60 Grab Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 July 05. (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 0.084 03:04 0.089 03:13 0.089 03:24 0.086 03:34 0.081 03:43 0.088 03:54 0.086 04:04 0.088 04:13 0.086 04:24 0.091 04:34 0.089 04:43 0.083 04:54 0.077 05:04 0.087