Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Imager) Date: 2005 July 08 UT Conditions: No clouds, humidity 33-47%, 1-2" seeing, winds NE 28-39 mph File Object UT Date UT Time Airmass Filter Itime Coadds PosAngle Slit Start Finish (sec) (deg) g20050708_0001_a.fit HD 116960 2005-07-08 05:39:19 05:39:24 1.038 H 0.50 5 0.00 0.8x15 g20050708_0002_b.fit HD 116960 2005-07-08 05:39:27 05:39:32 1.038 H 0.50 5 0.00 0.8x15 g20050708_0003_b.fit HD 116960 2005-07-08 05:39:32 05:39:38 1.038 H 0.50 5 0.00 0.8x15 g20050708_0004_a.fit HD 116960 2005-07-08 05:39:40 05:39:45 1.038 H 0.50 5 0.00 0.8x15 g20050708_0005_a.fit HD 116960 2005-07-08 05:39:55 05:40:00 1.038 H 0.50 5 0.00 0.8x15 g20050708_0006_b.fit HD 116960 2005-07-08 05:40:02 05:40:08 1.038 H 0.50 5 0.00 0.8x15 g20050708_0007_b.fit HD 116960 2005-07-08 05:40:08 05:40:13 1.038 H 0.50 5 0.00 0.8x15 g20050708_0008_a.fit HD 116960 2005-07-08 05:40:16 05:40:21 1.039 H 0.50 5 0.00 0.8x15 g20050708_0009_a.fit 9P/Tempel 1 2005-07-08 05:50:26 05:51:42 1.196 H 30.00 2 0.00 0.8x15 g20050708_0010_b.fit 9P/Tempel 1 2005-07-08 05:51:44 05:53:00 1.198 H 30.00 2 0.00 0.8x15 g20050708_0011_a.fit 9P/Tempel 1 2005-07-08 05:53:17 05:54:33 1.200 H 30.00 2 0.00 0.8x15 g20050708_0012_b.fit 9P/Tempel 1 2005-07-08 05:54:35 05:55:51 1.202 H 30.00 2 0.00 0.8x15 g20050708_0013_a.fit 9P/Tempel 1 2005-07-08 05:56:26 05:56:46 1.202 H 2.00 2 0.00 0.8x15 G g20050708_0014_a.fit 9P/Tempel 1 2005-07-08 05:56:35 05:56:44 1.203 H 2.00 2 0.00 0.8x15 G g20050708_0015_a.fit 9P/Tempel 1 2005-07-08 05:56:45 05:56:53 1.203 H 2.00 2 0.00 0.8x15 G g20050708_0016_a.fit HD 116960 2005-07-08 06:35:45 06:35:50 1.133 H 0.50 5 0.00 0.8x15 g20050708_0017_b.fit HD 116960 2005-07-08 06:35:53 06:35:58 1.133 H 0.50 5 0.00 0.8x15 g20050708_0018_a.fit HD 116960 2005-07-08 06:36:09 06:36:15 1.134 H 0.50 5 0.00 0.8x15 g20050708_0019_b.fit HD 116960 2005-07-08 06:36:17 06:36:22 1.134 H 0.50 5 0.00 0.8x15 g20050708_0020_a.fit 9P/Tempel 1 2005-07-08 06:38:59 06:39:18 1.289 H 10.00 1 0.00 0.8x15 g20050708_0021_b.fit 9P/Tempel 1 2005-07-08 06:39:20 06:39:38 1.290 H 10.00 1 0.00 0.8x15 g20050708_0022_a.fit 9P/Tempel 1 2005-07-08 06:40:03 06:41:19 1.294 H 30.00 2 0.00 0.8x15 g20050708_0023_b.fit 9P/Tempel 1 2005-07-08 06:41:21 06:42:37 1.298 H 30.00 2 0.00 0.8x15 g20050708_0026_a.fit 9P/Tempel 1 2005-07-08 07:55:44 07:56:60 1.663 H 30.00 2 0.00 0.8x15 g20050708_0027_b.fit 9P/Tempel 1 2005-07-08 07:57:02 07:58:18 1.672 H 30.00 2 0.00 0.8x15 g20050708_0032_dflat.fit Dome Flat 2005-07-08 09:54:24 09:55:18 1.932 H 10.00 3 0.00 0.8x15 g20050708_0033_dflat.fit Dome Flat 2005-07-08 09:55:46 09:56:40 1.932 H 10.00 3 0.00 0.8x15 g20050708_0034_dflat.fit Dome Flat 2005-07-08 09:57:00 09:57:53 1.932 H 10.00 3 0.00 0.8x15 g20050708_0035_dflat.fit Dome Flat 2005-07-08 09:58:03 09:58:57 1.932 H 10.00 3 0.00 0.8x15 g20050708_0036_dflat.fit Dome Flat 2005-07-08 09:59:04 09:59:58 1.932 H 10.00 3 0.00 0.8x15 g20050708_0037_dflat.fit Dome Flat 2005-07-08 10:00:06 10:01:00 1.932 H 10.00 3 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 08. (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 0.119 05:43 0.105 05:54 0.105 06:04 0.103 06:13 0.099 06:24 0.092 06:34 0.096 06:43 0.105 06:54 0.106 07:04 0.101 07:13 0.103 07:24 0.109 07:34 0.093 07:43 0.088 07:54 0.112 08:04 0.1