Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Spectrograph) Date: 2005 June 26 UT Conditions: Scattered cirrus, humidity 10-13%, 0.6-0.8" seeing, winds S to SSW 7-11 mph File Object UT Date UT Time Airmass Itime Coadds PosAngle Slit Grating GuideDog Start Finish (sec) (deg) images? b20050626_0001_a.fit HD 123309 2005-06-26 07:45:10 07:47:10 1.530 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0002_b.fit HD 123309 2005-06-26 07:47:14 07:49:13 1.538 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0003_b.fit HD 123309 2005-06-26 07:49:14 07:51:14 1.546 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0004_a.fit HD 123309 2005-06-26 07:51:17 07:53:17 1.554 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0005_a.fit HD 123309 2005-06-26 07:53:17 07:55:17 1.561 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0006_b.fit HD 123309 2005-06-26 07:55:20 07:57:19 1.570 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0007_b.fit HD 123309 2005-06-26 07:57:20 07:59:20 1.578 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0008_a.fit HD 123309 2005-06-26 07:59:22 08:01:22 1.587 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0009_a.fit HD 123309 2005-06-26 08:01:23 08:03:22 1.596 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0010_b.fit HD 123309 2005-06-26 08:03:25 08:05:25 1.605 15.00 4 315.00 0.5x15 LowRes15 N b20050626_0011_a.fit HD 123309 2005-06-26 08:10:58 08:11:37 1.635 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0012_b.fit HD 123309 2005-06-26 08:11:41 08:12:19 1.639 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0013_b.fit HD 123309 2005-06-26 08:12:20 08:12:59 1.642 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0014_a.fit HD 123309 2005-06-26 08:13:01 08:13:40 1.646 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0015_a.fit HD 123309 2005-06-26 08:13:41 08:14:20 1.649 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0016_b.fit HD 123309 2005-06-26 08:14:22 08:15:01 1.653 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0017_b.fit HD 123309 2005-06-26 08:15:02 08:15:40 1.657 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0018_a.fit HD 123309 2005-06-26 08:15:43 08:16:22 1.660 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0019_a.fit HD 123309 2005-06-26 08:16:22 08:17:01 1.664 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0020_b.fit HD 123309 2005-06-26 08:17:04 08:17:43 1.668 5.00 4 315.00 3.0x15 LowRes15 N b20050626_0021_a.fit 9P/Tempel 1 2005-06-26 08:29:07 08:30:24 1.621 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0022_b.fit 9P/Tempel 1 2005-06-26 08:30:27 08:31:44 1.630 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0023_b.fit 9P/Tempel 1 2005-06-26 08:31:44 08:33:01 1.641 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0024_a.fit 9P/Tempel 1 2005-06-26 08:33:03 08:34:20 1.652 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0025_a.fit 9P/Tempel 1 2005-06-26 08:34:21 08:35:38 1.662 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0026_b.fit 9P/Tempel 1 2005-06-26 08:35:40 08:36:57 1.674 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0027_b.fit 9P/Tempel 1 2005-06-26 08:36:58 08:38:14 1.684 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0028_a.fit 9P/Tempel 1 2005-06-26 08:38:17 08:39:34 1.695 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0029_a.fit 9P/Tempel 1 2005-06-26 08:39:34 08:40:51 1.706 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0030_b.fit 9P/Tempel 1 2005-06-26 08:40:54 08:42:11 1.719 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0031_a.fit 9P/Tempel 1 2005-06-26 08:44:08 08:45:25 1.748 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0032_b.fit 9P/Tempel 1 2005-06-26 08:45:28 08:46:45 1.762 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0033_b.fit 9P/Tempel 1 2005-06-26 08:46:45 08:48:02 1.774 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0034_a.fit 9P/Tempel 1 2005-06-26 08:48:05 08:49:21 1.787 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0035_a.fit 9P/Tempel 1 2005-06-26 08:49:22 08:50:39 1.799 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0036_b.fit 9P/Tempel 1 2005-06-26 08:50:41 08:51:58 1.814 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0037_b.fit 9P/Tempel 1 2005-06-26 08:51:59 08:53:16 1.827 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0038_a.fit 9P/Tempel 1 2005-06-26 08:53:18 08:54:35 1.841 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0039_a.fit 9P/Tempel 1 2005-06-26 08:54:36 08:55:52 1.856 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0040_b.fit 9P/Tempel 1 2005-06-26 08:55:55 08:57:12 1.870 60.00 1 315.00 0.5x15 LowRes15 N b20050626_0041_a.fit HD 124683 2005-06-26 09:07:55 09:08:03 1.799 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0042_b.fit HD 124683 2005-06-26 09:08:06 09:08:15 1.800 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0043_b.fit HD 124683 2005-06-26 09:08:15 09:08:24 1.801 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0044_a.fit HD 124683 2005-06-26 09:08:26 09:08:35 1.803 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0045_a.fit HD 124683 2005-06-26 09:08:35 09:08:44 1.804 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0046_b.fit HD 124683 2005-06-26 09:08:46 09:08:55 1.806 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0047_b.fit HD 124683 2005-06-26 09:08:55 09:09:04 1.807 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0048_a.fit HD 124683 2005-06-26 09:09:06 09:09:15 1.809 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0049_a.fit HD 124683 2005-06-26 09:09:16 09:09:24 1.810 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0050_b.fit HD 124683 2005-06-26 09:09:27 09:09:35 1.812 0.51 8 315.00 0.5x15 LowRes15 N b20050626_0056_a.fit HD 124683 2005-06-26 09:13:52 09:14:01 1.852 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0057_b.fit HD 124683 2005-06-26 09:14:03 09:14:12 1.854 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0058_b.fit HD 124683 2005-06-26 09:14:12 09:14:21 1.855 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0059_a.fit HD 124683 2005-06-26 09:14:23 09:14:32 1.857 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0060_a.fit HD 124683 2005-06-26 09:14:32 09:14:41 1.858 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0061_b.fit HD 124683 2005-06-26 09:14:43 09:14:52 1.860 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0062_b.fit HD 124683 2005-06-26 09:14:52 09:15:01 1.860 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0063_a.fit HD 124683 2005-06-26 09:15:03 09:15:12 1.863 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0064_a.fit HD 124683 2005-06-26 09:15:12 09:15:21 1.863 0.51 8 315.00 3.0x15 LowRes15 N b20050626_0065_b.fit HD 124683 2005-06-26 09:15:23 09:15:32 1.865 0.51 8 315.00 3.0x15 LowRes15 N Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 Jun 26. (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) 07:34 0.247 07:43 0.238 07:54 0.217 08:04 0.212 08:13 0.209 08:24 0.219 08:34 0.217 08:43 0.219 08:54 0.219 09:04 0.202 09:13 0.205 09:24 0.195