Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Imager) Date: 2005 July 07 UT Conditions: No clouds, humidity 32-35%, 0.5-1.1" seeing, winds ENE 26-33 mph File Object UT Date UT Time Airmass Filter Itime Coadds PosAngle Slit Start Finish (sec) (deg) g20050707_0001_a.fit HD 116960 2005-07-07 05:41:50 05:42:15 1.037 H 0.24 50 0.00 0.8x15 g20050707_0002_b.fit HD 116960 2005-07-07 05:42:17 05:42:41 1.037 H 0.24 50 0.00 0.8x15 g20050707_0003_a.fit 9P/Tempel 1 2005-07-07 05:48:02 05:49:13 1.186 H 10.00 4 0.00 0.8x15 g20050707_0004_b.fit 9P/Tempel 1 2005-07-07 05:49:15 05:50:26 1.187 H 10.00 4 0.00 0.8x15 g20050707_0005_a.fit HD 116960 2005-07-07 06:31:12 06:31:26 1.113 H 0.24 30 0.00 0.8x15 g20050707_0006_b.fit HD 116960 2005-07-07 06:31:29 06:31:43 1.114 H 0.24 30 0.00 0.8x15 g20050707_0007_b.fit HD 116960 2005-07-07 06:31:44 06:31:58 1.115 H 0.24 30 0.00 0.8x15 g20050707_0008_a.fit HD 116960 2005-07-07 06:32:01 06:32:16 1.115 H 0.24 30 0.00 0.8x15 g20050707_0010_a.fit 9P/Tempel 1 2005-07-07 06:35:26 06:36:02 1.269 H 10.00 2 0.00 0.8x15 g20050707_0011_b.fit 9P/Tempel 1 2005-07-07 06:36:05 06:36:41 1.271 H 10.00 2 0.00 0.8x15 g20050707_0012_a.fit 9P/Tempel 1 2005-07-07 06:43:15 06:43:44 1.290 H 3.00 5 0.00 0.8x15 g20050707_0013_a.fit 9P/Tempel 1 2005-07-07 06:37:25 06:37:36 1.273 H 3.00 1 0.00 0.8x15 G g20050707_0014_a.fit 9P/Tempel 1 2005-07-07 06:44:41 06:44:52 1.293 H 3.00 1 0.00 0.8x15 G g20050707_0015_a.fit 9P/Tempel 1 2005-07-07 06:44:48 06:44:55 1.293 H 3.00 1 0.00 0.8x15 G g20050707_0016_a.fit 9P/Tempel 1 2005-07-07 06:44:55 06:45:02 1.294 H 3.00 1 0.00 0.8x15 G g20050707_0017_a.fit 9P/Tempel 1 2005-07-07 06:45:02 06:45:09 1.294 H 3.00 1 0.00 0.8x15 G g20050707_0018_a.fit 9P/Tempel 1 2005-07-07 06:45:09 06:45:16 1.294 H 3.00 1 0.00 0.8x15 G g20050707_0019_a.fit 9P/Tempel 1 2005-07-07 06:45:17 06:45:23 1.295 H 3.00 1 0.00 0.8x15 G g20050707_0020_a.fit 9P/Tempel 1 2005-07-07 06:45:24 06:45:30 1.295 H 3.00 1 0.00 0.8x15 G g20050707_0021_a.fit HD 116960 2005-07-07 07:37:13 07:37:21 1.334 H 0.30 15 0.00 0.8x15 g20050707_0022_b.fit HD 116960 2005-07-07 07:37:24 07:37:33 1.335 H 0.30 15 0.00 0.8x15 g20050707_0023_a.fit 9P/Tempel 1 2005-07-07 07:40:21 07:41:15 1.533 H 10.00 3 0.00 0.8x15 g20050707_0024_b.fit 9P/Tempel 1 2005-07-07 07:41:19 07:42:12 1.538 H 10.00 3 0.00 0.8x15 g20050707_0228_a.fit HD 116960 2005-07-07 08:50:39 08:51:38 1.939 H 1.00 30 0.00 0.8x15 g20050707_0229_b.fit HD 116960 2005-07-07 08:51:40 08:52:39 1.952 H 1.00 30 0.00 0.8x15 g20050707_0533_a.fit HD 144873 2005-07-07 09:51:57 09:52:00 1.222 K 0.24 5 0.00 0.8x15 g20050707_0534_b.fit HD 144873 2005-07-07 09:52:02 09:52:05 1.222 K 0.24 5 0.00 0.8x15 g20050707_0535_a.fit HD 144873 2005-07-07 09:52:57 09:53:00 1.225 K 0.24 5 0.00 0.8x15 g20050707_0536_b.fit HD 144873 2005-07-07 09:53:02 09:53:05 1.225 K 0.24 5 0.00 0.8x15 Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 Jul 07. (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) 05:34 0.115 05:43 0.15 05:54 0.192 06:04 0.15 06:13 0.14 06:24 0.151 06:34 0.145 06:43 0.138 06:54 0.138 07:04 0.138 07:13 0.136 07:24 0.13 07:34 0.151 07:43 0.15 07:54 0.149 08:04 0.155 08:13 0.149 08:24 0.151 08:34 0.152 08:43 0.135 08:54 0.164 09:04 0.146 09:13 0.151 09:24 0.145 09:34 0.125 09:43 0.118 09:54 0.13