Telescope: NASA IRTF, Mauna Kea Instrument: SpeX (Imager) Date: 2005 June 28 UT Conditions: No clouds, humidity 11-29%, seeing unknown, light winds File Object UT Date UT Time Airmass Filter Itime Coadds PosAngle Slit Start Finish (sec) (deg) g20050628_0001_a.fit 9P/Tempel 1 2005-06-28 07:28:35 07:28:50 1.324 J 7.00 1 110.00 0.8x15 G g20050628_0002_a.fit 9P/Tempel 1 2005-06-28 07:28:51 07:29:05 1.325 J 7.00 1 110.00 0.8x15 G g20050628_0003_a.fit 9P/Tempel 1 2005-06-28 07:29:06 07:29:20 1.326 J 7.00 1 110.00 0.8x15 G g20050628_0004_a.fit 9P/Tempel 1 2005-06-28 07:29:22 07:29:36 1.327 J 7.00 1 110.00 0.8x15 G g20050628_0005_a.fit 9P/Tempel 1 2005-06-28 07:29:37 07:29:51 1.328 J 7.00 1 110.00 0.8x15 G g20050628_0006_a.fit 9P/Tempel 1 2005-06-28 07:29:52 07:30:07 1.329 J 7.00 1 110.00 0.8x15 G g20050628_0007_a.fit 9P/Tempel 1 2005-06-28 07:30:08 07:30:22 1.330 J 7.00 1 110.00 0.8x15 G g20050628_0008_a.fit 9P/Tempel 1 2005-06-28 07:30:23 07:30:38 1.331 J 7.00 1 110.00 0.8x15 G g20050628_0009_a.fit 9P/Tempel 1 2005-06-28 07:30:38 07:30:53 1.332 J 7.00 1 110.00 0.8x15 G g20050628_0010_a.fit 9P/Tempel 1 2005-06-28 07:30:54 07:31:08 1.333 J 7.00 1 110.00 0.8x15 G g20050628_0011_a.fit 9P/Tempel 1 2005-06-28 07:31:09 07:31:24 1.334 J 7.00 1 110.00 0.8x15 G g20050628_0012_a.fit 9P/Tempel 1 2005-06-28 07:31:25 07:31:39 1.335 J 7.00 1 110.00 0.8x15 G g20050628_0013_a.fit 9P/Tempel 1 2005-06-28 07:31:40 07:31:54 1.336 J 7.00 1 110.00 0.8x15 G g20050628_0014_a.fit 9P/Tempel 1 2005-06-28 07:31:55 07:32:10 1.337 J 7.00 1 110.00 0.8x15 G g20050628_0015_a.fit 9P/Tempel 1 2005-06-28 07:32:11 07:32:25 1.338 J 7.00 1 110.00 0.8x15 G g20050628_0016_a.fit 9P/Tempel 1 2005-06-28 07:32:26 07:32:40 1.339 J 7.00 1 110.00 0.8x15 G g20050628_0017_a.fit 9P/Tempel 1 2005-06-28 07:32:42 07:32:56 1.340 J 7.00 1 110.00 0.8x15 G g20050628_0018_a.fit 9P/Tempel 1 2005-06-28 07:32:57 07:33:11 1.341 J 7.00 1 110.00 0.8x15 G g20050628_0019_a.fit 9P/Tempel 1 2005-06-28 07:33:12 07:33:27 1.342 J 7.00 1 110.00 0.8x15 G g20050628_0020_a.fit 9P/Tempel 1 2005-06-28 07:33:28 07:33:42 1.343 J 7.00 1 110.00 0.8x15 G g20050628_0021_a.fit 9P/Tempel 1 2005-06-28 07:33:44 07:33:58 1.344 J 7.00 1 110.00 0.8x15 G g20050628_0022_a.fit 9P/Tempel 1 2005-06-28 07:33:59 07:34:14 1.345 J 7.00 1 110.00 0.8x15 G g20050628_0023_a.fit 9P/Tempel 1 2005-06-28 07:34:15 07:34:29 1.346 J 7.00 1 110.00 0.8x15 G g20050628_0024_a.fit 9P/Tempel 1 2005-06-28 07:34:30 07:34:44 1.347 J 7.00 1 110.00 0.8x15 G g20050628_0025_a.fit 9P/Tempel 1 2005-06-28 07:34:45 07:34:60 1.348 J 7.00 1 110.00 0.8x15 G g20050628_0026_a.fit 9P/Tempel 1 2005-06-28 07:35:01 07:35:15 1.349 J 7.00 1 110.00 0.8x15 G g20050628_0027_a.fit 9P/Tempel 1 2005-06-28 07:35:16 07:35:31 1.350 J 7.00 1 110.00 0.8x15 G g20050628_0028_a.fit 9P/Tempel 1 2005-06-28 07:35:32 07:35:46 1.351 J 7.00 1 110.00 0.8x15 G g20050628_0029_a.fit 9P/Tempel 1 2005-06-28 07:35:47 07:36:02 1.352 J 7.00 1 110.00 0.8x15 G g20050628_0030_a.fit 9P/Tempel 1 2005-06-28 07:36:03 07:36:17 1.353 J 7.00 1 110.00 0.8x15 G g20050628_0031_a.fit 9P/Tempel 1 2005-06-28 07:36:18 07:36:33 1.354 J 7.00 1 110.00 0.8x15 G g20050628_0032_a.fit 9P/Tempel 1 2005-06-28 07:36:34 07:36:48 1.355 J 7.00 1 110.00 0.8x15 G g20050628_0033_a.fit 9P/Tempel 1 2005-06-28 07:36:49 07:37:04 1.357 J 7.00 1 110.00 0.8x15 G g20050628_0034_a.fit 9P/Tempel 1 2005-06-28 07:37:05 07:37:19 1.357 J 7.00 1 110.00 0.8x15 G g20050628_0035_a.fit 9P/Tempel 1 2005-06-28 07:37:21 07:37:35 1.359 J 7.00 1 110.00 0.8x15 G g20050628_0036_a.fit 9P/Tempel 1 2005-06-28 07:37:36 07:37:50 1.359 J 7.00 1 110.00 0.8x15 G g20050628_0037_a.fit 9P/Tempel 1 2005-06-28 07:37:52 07:38:06 1.361 J 7.00 1 110.00 0.8x15 G g20050628_0038_a.fit 9P/Tempel 1 2005-06-28 07:38:07 07:38:22 1.362 J 7.00 1 110.00 0.8x15 G g20050628_0039_a.fit 9P/Tempel 1 2005-06-28 07:38:23 07:38:37 1.363 J 7.00 1 110.00 0.8x15 G g20050628_0040_a.fit 9P/Tempel 1 2005-06-28 07:38:38 07:38:52 1.364 J 7.00 1 110.00 0.8x15 G g20050628_0041_a.fit 9P/Tempel 1 2005-06-28 07:38:54 07:39:08 1.365 J 7.00 1 110.00 0.8x15 G g20050628_0042_a.fit 9P/Tempel 1 2005-06-28 07:39:09 07:39:23 1.366 J 7.00 1 110.00 0.8x15 G g20050628_0043_a.fit 9P/Tempel 1 2005-06-28 07:39:24 07:39:38 1.367 J 7.00 1 110.00 0.8x15 G g20050628_0044_a.fit 9P/Tempel 1 2005-06-28 07:39:39 07:39:54 1.368 J 7.00 1 110.00 0.8x15 G g20050628_0045_a.fit 9P/Tempel 1 2005-06-28 07:39:55 07:40:09 1.370 J 7.00 1 110.00 0.8x15 G g20050628_0046_a.fit 9P/Tempel 1 2005-06-28 07:40:10 07:40:25 1.370 J 7.00 1 110.00 0.8x15 G g20050628_0047_a.fit 9P/Tempel 1 2005-06-28 07:40:26 07:40:40 1.372 J 7.00 1 110.00 0.8x15 G g20050628_0048_a.fit 9P/Tempel 1 2005-06-28 07:40:41 07:40:55 1.373 J 7.00 1 110.00 0.8x15 G g20050628_0049_a.fit 9P/Tempel 1 2005-06-28 07:40:57 07:41:11 1.374 J 7.00 1 110.00 0.8x15 G g20050628_0050_a.fit 9P/Tempel 1 2005-06-28 07:41:12 07:41:26 1.375 J 7.00 1 110.00 0.8x15 G Optical depth at 225 GHz measured at the Caltech Submillimeter Observatory (CSO) on Mauna Kea as function of time (UT) on 2005 Jun 28. (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) 07:24 0.198 07:34 0.183 07:43 0.181