Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Imager) Date: 2005 July 13 UT Conditions: Cirrus decrease from overcast to scattered, humidity 5-56%, 0.65-1" seeing, light winds File Object UT Date UT Time Airmass Filter Itime Coadds PosAngle Slit Start Finish (sec) (deg) g20050713_0001_a.fit HD 116960 2005-07-13 05:56:46 05:57:16 1.092 H 0.50 30 0.00 Mirror g20050713_0002_a.fit HD 116960 2005-07-13 05:59:42 05:59:48 1.097 H 0.50 5 0.00 Mirror g20050713_0003_a.fit HD 116960 2005-07-13 05:59:55 06:00:01 1.097 H 0.50 5 0.00 Mirror g20050713_0004_a.fit HD 116960 2005-07-13 06:00:07 06:00:12 1.098 H 0.50 5 0.00 Mirror g20050713_0005_a.fit HD 116960 2005-07-13 06:00:18 06:00:24 1.098 H 0.50 5 0.00 Mirror g20050713_0006_a.fit HD 116960 2005-07-13 06:00:30 06:00:35 1.098 H 0.50 5 0.00 Mirror g20050713_0007_a.fit HD 116960 2005-07-13 06:02:58 06:03:03 1.103 J 0.50 5 0.00 Mirror g20050713_0008_a.fit HD 116960 2005-07-13 06:03:09 06:03:15 1.104 J 0.50 5 0.00 Mirror g20050713_0009_a.fit HD 116960 2005-07-13 06:03:22 06:03:27 1.104 J 0.50 5 0.00 Mirror g20050713_0010_a.fit HD 116960 2005-07-13 06:03:35 06:03:40 1.104 J 0.50 5 0.00 Mirror g20050713_0011_a.fit HD 116960 2005-07-13 06:03:48 06:03:53 1.105 J 0.50 5 0.00 Mirror g20050713_0012_a.fit HD 116960 2005-07-13 06:04:55 06:05:05 1.108 K 1.00 5 0.00 Mirror g20050713_0013_a.fit HD 116960 2005-07-13 06:05:12 06:05:23 1.108 K 1.00 5 0.00 Mirror g20050713_0014_a.fit HD 116960 2005-07-13 06:05:30 06:05:40 1.109 K 1.00 5 0.00 Mirror g20050713_0015_a.fit HD 116960 2005-07-13 06:05:47 06:05:57 1.110 K 1.00 5 0.00 Mirror g20050713_0016_a.fit HD 116960 2005-07-13 06:06:05 06:06:15 1.110 K 1.00 5 0.00 Mirror g20050713_0017_a.fit 9P/Tempel 1 2005-07-13 06:28:55 06:30:51 1.321 H 50.00 2 0.00 Mirror g20050713_0018_b.fit 9P/Tempel 1 2005-07-13 06:30:53 06:32:49 1.328 H 50.00 2 0.00 Mirror g20050713_0019_b.fit 9P/Tempel 1 2005-07-13 06:32:49 06:34:45 1.334 H 50.00 2 0.00 Mirror g20050713_0020_a.fit 9P/Tempel 1 2005-07-13 06:34:47 06:36:43 1.340 H 50.00 2 0.00 Mirror g20050713_0021_a.fit 9P/Tempel 1 2005-07-13 06:37:44 06:39:35 1.349 K 20.00 4 0.00 Mirror g20050713_0022_b.fit 9P/Tempel 1 2005-07-13 06:39:37 06:41:28 1.355 K 20.00 4 0.00 Mirror g20050713_0023_b.fit 9P/Tempel 1 2005-07-13 06:41:28 06:43:19 1.362 K 20.00 4 0.00 Mirror g20050713_0024_a.fit 9P/Tempel 1 2005-07-13 06:43:21 06:45:12 1.368 K 20.00 4 0.00 Mirror g20050713_0025_a.fit 9P/Tempel 1 2005-07-13 06:45:54 06:46:50 1.373 H 20.00 2 0.00 Mirror g20050713_0026_b.fit 9P/Tempel 1 2005-07-13 06:46:52 06:47:48 1.377 H 20.00 2 0.00 Mirror g20050713_0027_b.fit 9P/Tempel 1 2005-07-13 06:47:48 06:48:44 1.381 H 20.00 2 0.00 Mirror g20050713_0028_a.fit 9P/Tempel 1 2005-07-13 06:48:46 06:49:42 1.384 H 20.00 2 0.00 Mirror g20050713_0029_a.fit 9P/Tempel 1 2005-07-13 06:50:27 06:52:23 1.395 H 50.00 2 0.00 Mirror g20050713_0030_b.fit 9P/Tempel 1 2005-07-13 06:52:25 06:54:21 1.403 H 50.00 2 0.00 Mirror g20050713_0031_b.fit 9P/Tempel 1 2005-07-13 06:54:21 06:56:17 1.410 H 50.00 2 0.00 Mirror g20050713_0032_a.fit 9P/Tempel 1 2005-07-13 06:56:19 06:58:15 1.418 H 50.00 2 0.00 Mirror g20050713_0033_a.fit 9P/Tempel 1 2005-07-13 06:59:00 07:00:56 1.429 J 50.00 2 0.00 Mirror g20050713_0034_b.fit 9P/Tempel 1 2005-07-13 07:00:59 07:02:54 1.439 J 50.00 2 0.00 Mirror g20050713_0035_b.fit 9P/Tempel 1 2005-07-13 07:02:55 07:04:50 1.447 J 50.00 2 0.00 Mirror g20050713_0036_a.fit 9P/Tempel 1 2005-07-13 07:04:52 07:06:48 1.456 J 50.00 2 0.00 Mirror g20050713_0037_dark.fit Dark 2005-07-13 07:11:44 07:12:38 1.932 J 10.00 3 0.00 Mirror g20050713_0038_dark.fit Dark 2005-07-13 07:12:41 07:13:34 1.932 J 10.00 3 0.00 Mirror g20050713_0039_dark.fit Dark 2005-07-13 07:14:23 07:15:17 1.932 H 10.00 3 0.00 Mirror g20050713_0040_dark.fit Dark 2005-07-13 07:15:19 07:16:13 1.932 H 10.00 3 0.00 Mirror g20050713_0041_dark.fit Dark 2005-07-13 07:17:07 07:18:31 1.932 K 20.00 3 0.00 Mirror g20050713_0042_dark.fit Dark 2005-07-13 07:18:36 07:19:59 1.932 K 20.00 3 0.00 Mirror g20050713_0043_dflat.fit Dome Flat 2005-07-13 07:23:28 07:24:52 1.932 K 20.00 3 0.00 Mirror g20050713_0044_dflat.fit Dome Flat 2005-07-13 07:24:56 07:26:19 1.932 K 20.00 3 0.00 Mirror g20050713_0045_dflat.fit Dome Flat 2005-07-13 07:27:19 07:28:43 1.932 K 20.00 3 0.00 Mirror g20050713_0046_dflat.fit Dome Flat 2005-07-13 07:28:45 07:30:09 1.932 K 20.00 3 0.00 Mirror g20050713_0047_dflat.fit Dome Flat 2005-07-13 07:30:54 07:32:18 1.932 K 20.00 3 0.00 Mirror g20050713_0048_dflat.fit Dome Flat 2005-07-13 07:32:20 07:33:43 1.932 K 20.00 3 0.00 Mirror g20050713_0049_dflat.fit Dome Flat 2005-07-13 07:34:18 07:35:12 1.932 J 10.00 3 0.00 Mirror g20050713_0050_dflat.fit Dome Flat 2005-07-13 07:35:14 07:36:08 1.932 J 10.00 3 0.00 Mirror g20050713_0051_dflat.fit Dome Flat 2005-07-13 07:39:08 07:40:02 1.923 J 10.00 3 0.00 Mirror g20050713_0052_dflat.fit Dome Flat 2005-07-13 07:40:05 07:40:58 1.923 J 10.00 3 0.00 Mirror g20050713_0053_dflat.fit Dome Flat 2005-07-13 07:43:02 07:43:49 1.923 J 8.00 3 0.00 Mirror g20050713_0054_dflat.fit Dome Flat 2005-07-13 07:43:52 07:44:39 1.923 J 8.00 3 0.00 Mirror g20050713_0056_dflat.fit Dome Flat 2005-07-13 07:49:44 07:50:38 1.929 J 10.00 3 0.00 Mirror g20050713_0057_dflat.fit Dome Flat 2005-07-13 07:50:40 07:51:33 1.929 J 10.00 3 0.00 Mirror g20050713_0058_dflat.fit Dome Flat 2005-07-13 07:52:21 07:53:15 1.929 H 10.00 3 0.00 Mirror g20050713_0059_dflat.fit Dome Flat 2005-07-13 07:53:17 07:54:10 1.929 H 10.00 3 0.00 Mirror g20050713_0060_dflat.fit Dome Flat 2005-07-13 07:55:01 07:55:54 1.929 J 10.00 3 0.00 Mirror g20050713_0061_dflat.fit Dome Flat 2005-07-13 07:55:58 07:56:51 1.929 J 10.00 3 0.00 Mirror Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 Jul 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) 05:54 0.13 06:04 0.122 06:13 0.125 06:24 0.128 06:34 0.124 06:43 0.119 06:54 0.126 07:04 0.125 07:13 0.135