REPLICATOR AND CLOUDSCOPE FLIGHT NOTES

FLIGHT 2, 26 SEPTEMBER 1997

Pat Arnott {return}.

FLIGHT 2 NOTES:

REPLICATOR TAPE MISLABELED FLIGHT ONE ONE START OF TAPE, BUT CORRECTLY LABELED FLIGHT 2 ON END OF TAPE.

17:43:10 Cloudscope recording.

17:49:50 Take off, replicator power on.

17:51:06 Drove replicator 30 frames. Bumpy at 1 km.

17:53:00 Drove replicator 50 frames.

17:54:34 Cloudscope illumination nob set at 10:00 (rotation as if it were a clock).

17:57:13 Cirrus cells ahead with fall streaks, airplane at 4833 m.

18:01:03 Mix of cirrus and contrail ahead.

18:02:16 UAV operating above us. Limits our altitude for the moment.

18:05:45 Ran 30 frames on replicator.

18:09:45 Seeing white arc from cirrus above. Very colorful halos.

18:10:07 Very colorful halos above.

18:12:00 Bright sundog with arc.

18:14:00 Colorful halos above.

18:16:00 Replicator on standby. Bank of cirrus above - weak halo.

18:18:45 Cloudscope -7.8 C.

18:20:00 Cloudscope illumination nob at 12:00.

18:21:53 Thickening cirrus above now.Cirrus above more uniform than before, but we are southeast of CART site.

18:22:32 Drove replicator for 10 frames.

18:23:48 Climbing in altitude.

18:25:40 Cloudscope illumination knob on 2pm setting, -27.5 C total temperature.

18:26:00 10,256 m, 253 mb, -40 C. Cirrus above not making halos.

18:27:51 In cloud, cloudscope showing ice crystals.

18:29:07 Strong sundog with arc. 23 miles southeast of CART site.

18:29:45 10666 m.

18:30:24 cloudscope showing small ice crystals (< 100 um).

18:31:30 -32.7 C cloudscope, cirrus patchy.

18:32:40 Cloudscope images of plate polycrystals.

18:35:35 Replicator pump on.

18:36:00 Replicator on, filmspeed 1.

18:36:45 Cloudscope showing small crystals.

18:37:07 Filmspeed 2 for replicator, 75% applicator tip setting.

18:39:10 -49 C outside temperature?

18:39:41 80% replicator setting for the applicator.

18:42:49 Filmspeed 1 on replicator.

18:43:00 Event marker, replicator.

18:43:15 Replicator auto off sequence started.

18:44:20 Cloudscope total temperature reading below -50 C.

18:45:17 Replicator on, filmspeed 1. Patchy cirrus.

18:46:23 Event marker, replicator.

18:46:29 Replicator filmspeed 2.

18:47:24 In cirrus, -38.6 C.

18:48:37 Event marker, replicator.

18:49:12 Filmspeed 1, replicator.

18:49:25 Replicator event marker.

18:49:56 Filmspeed 2, 80% applicator setting, replicator.

18:50:26 Filmspeed 3, thicker cirrus.

18:51:38 Filmspeed 2 replicator.

18:53:04 Event marker replicator.

18:54:26 Filmspeed 3 replicator.

18:54:41 Event marker, replicator.

18:55:46 Filmspeed 2, replicator.

18:56:21 Nice columns on cloudscope.

18:56:54 Again nice columns on cloudscope.

18:56:57 Event marker, replicator.

18:57:24 Scads of small crystals on cloudscope. Near base of cirrus, sublimation?

18:58:06 Filmspeed 1, replicator.

18:58:18 Replicator event marker.

19:00:03 Event marker, replicator.

19:00:47 Filmspeed 2, 75% applicator tip setting.

19:03:55 Filmspeed 2 to filmspeed 1, event marker 60% applicator tip setting.

19:04:41 Nice column on cloudscope, 10,666 m, -43 C.

19:05:54 Climbing.

19:06:26 Event marker replicator.

19:07:13 Small crystals on cloudscope.

19:07:51 Filmspeed 1,2 cycle. 63% applicator tip setting on replicator.

19:08:51 Weak halo.

19:09:42 Pump setting on replicator at 60%, wide open.

19:10:47 Replicator tip setting to 60%.

19:11:44 Replicator event marker, filmspeed 1.

19:12:00 At frame number 32,862, replicator is out of film.

19:13:52 Needle on cloudscope.

19:15:24 Nice columns, polyplates on cloudscope, to 150 um, 11,387 m, -50 C.

19:18:26 Small crystals (10 um) with occasional large crystals on cloudscope.

19:19:28 Small crystals only showing on cloudscope, -48 C.

19:26:21 Lots of small crystals, along with a few large (>150 um).

19:28:28 Same as previous.

19:29:42 Sundog with arc above.

19:30:11? Small crystals with large on cloudscope.

19:31:59 Bright halo with arc.

19:32:34 Same as previous.

19:36:28 Cloudscope showing lots of small crystals with occasional large.

19:38:52? 22 deg. halo showing partial tangent arc below.

19:41:26 22 deg. halo with oval halo. Sundog. Great white arc out from sundog. Nature at its finest!

19:52:47 Great undersun, with a sundog feature nearby (undersundog?).

19:54:00 11,300 m, cloud top, -49 C. Another layer above.

20:00:59 Superb halo, sundog display again.

20:04:30 Small crystals on cloudscope.

20:08:21 1/1000 sec shutter speed setting with lamp on is giving quite nice images.

20:41:00 Absolutely fantastic halo, sundog, arc, and 46 deg. halo on bottom!

20:19:00 Concentration to 75 / Li on PMS 2DC, some later to 150 / Li.

21:00:00 Cloudscope off.

21:09:00 Land.

{return}