PRIME Observation Log 2025/01/20

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Observation Log (Time is in UT)

Date: 2025/01/20
Local observer: Ryusei
Remote observer: Naoto, Yui, Kansuke
Weather: Clear and windy -> Cloudy
Comment:
Detector Temperature: 121.99994 +- 0.00308 K
ImageAcquisitionErrors occurred 5 times @
2025-01-20 21:12:34 SAT
2025-01-20 21:17:33 SAT
2025-01-20 21:52:10 SAT
2025-01-21 02:36:07 SAT
2025-01-21 02:54:33 SAT

Twilight Flat Time (Sun altitude = -5.5°)
Evening	20:10:02
Morning	05:26:08

Science Observation (Sun altitude < -10°)
Start	20:34:33
End	05:01:37

Bulge Observation (Sun alt. < -10° & GB alt. > 22°)
Start	04:35:13
End	05:01:37

	Actually Observed Time (hh:mm:ss)	Expected Observation Time (hh:mm:ss)	Observed Fraction (observed/expected)
Total Time	03:16:31	08:27:04	0.388
GB Time	00:00:00	00:26:23	0.000
Non-GB Time	03:16:31	08:00:40	0.409

Institute Statistics

Institute	Total Frame	Total Exposure (hh:mm:ss)	Total Observation (hh:mm:ss)	Efficiency (exp./obs.)
CALIB	1303	01:02:06	02:40:06	0.388
NASA	1418	01:07:35	02:51:35	0.394
OU	254	00:12:06	00:24:55	0.486

Type Statistics

Type	Total Frame	Total Exposure (hh:mm:ss)	Total Observation (hh:mm:ss)	Efficiency (exp./obs.)
TWILIGHT	80	00:03:48	00:15:39	0.244
all_sky_grid	1418	01:07:35	02:51:35	0.394
ToO	254	00:12:06	00:24:55	0.486
test	1223	00:58:17	02:24:26	0.404

Target Statistics

Target	Total Frame	Total Exposure (hh:mm:ss)	Total Observation (hh:mm:ss)	Efficiency (exp./obs.)
FLAT OH	80	00:03:48	00:15:39	0.244
field3240_test	40	00:01:54	00:22:20	0.085
field3240	49	00:02:20	00:04:34	0.510
field3241	49	00:02:20	00:04:18	0.542
field3242	49	00:02:20	00:04:18	0.542
field3052	49	00:02:20	00:06:21	0.367
field2685_test	32	00:01:31	00:20:49	0.073
field2685	32	00:01:31	00:02:41	0.568
field2686	24	00:01:08	00:01:48	0.635
field2511	32	00:01:31	00:07:18	0.209
field2512	24	00:01:08	00:01:45	0.652
field2344	24	00:01:08	00:01:45	0.651
field2345	24	00:01:08	00:01:48	0.635
field2346	24	00:01:08	00:01:48	0.635
field2513	24	00:01:08	00:01:50	0.619
field2514	24	00:01:08	00:01:45	0.652
field2687	24	00:01:08	00:01:48	0.635
field2688	24	00:01:08	00:01:45	0.652
field2866	24	00:01:08	00:01:48	0.635
field2867	24	00:01:08	00:01:48	0.635
field3050	24	00:01:08	00:01:45	0.652
field3051	24	00:01:08	00:01:48	0.635
field3239	24	00:01:08	00:01:48	0.635
field3053	49	00:02:20	00:04:01	0.580
field2868	49	00:02:20	00:03:56	0.594
field2869	49	00:02:20	00:03:56	0.594
field2689	49	00:02:20	00:03:56	0.594
field2690	49	00:02:20	00:03:58	0.587
field2515	49	00:02:20	00:04:01	0.580
field2516	49	00:02:20	00:03:56	0.594
field2347	49	00:02:20	00:03:58	0.587
field2348	49	00:02:20	00:03:58	0.587
field2349	49	00:02:20	00:04:11	0.556
field2350	24	00:01:08	00:01:48	0.635
field2517	24	00:01:08	00:01:48	0.635
field2518	24	00:01:08	00:01:45	0.652
field2691	24	00:01:08	00:07:04	0.162
field13318_test	4	00:00:11	00:02:40	0.071
field13318	250	00:11:55	00:22:15	0.535
field2870_test	8	00:00:22	00:05:11	0.073
field2870	24	00:01:08	00:01:45	0.652
field2871	24	00:01:08	00:01:45	0.652
field3054	24	00:01:08	00:01:45	0.652
field3055	24	00:01:08	00:01:48	0.635
field3243	24	00:01:08	00:01:45	0.652
field3244	24	00:01:08	00:03:15	0.352
field3053_test	12	00:00:34	00:04:10	0.137
test	1223	00:58:17	02:24:26	0.404

	All (hh:mm:ss)	GB (hh:mm:ss)	Non-GB (hh:mm:ss)	SAAO (hh:mm:ss)	OU (hh:mm:ss)	NASA (hh:mm:ss)	ABC (hh:mm:ss)	CALIB (hh:mm:ss)
Total	1900:28:19	944:50:56	955:37:23	267:34:28	229:20:58	229:20:58	229:20:58	12:26:35
Observed	94:00:18 (4.95%)	00:00:00 (0.00%)	94:00:18 (9.84%)	02:15:08 (0.84%)	22:10:48 (9.67%)	67:19:13 (29.35%)	02:15:08 (0.98%)	12:26:35 (N/A)
Remaining	1806:28:00 (95.05%)	944:50:56 (100.00%)	861:37:04 (90.16%)	265:19:19 (99.16%)	207:10:09 (90.33%)	162:01:45 (70.65%)	227:05:49 (99.02%)	00:00:00 (N/A)