HET Night Report Reader

Civil Date	Ephemerides
2026-02-22	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	00:56	01:42	02:10	12:08	12:36	13:22	-	06:30
Night Length	9:58		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Sergey Rostopchin	Amy Westfall

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
00:49	5.4	7.1	12:34	twilight	11:45
Total Time Open					11:45

Program	Night Priority	Science
02:10	Science
04:44	Idle due to weather (clouds)
06:14	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:21	01:46	0.64	1.03	110	-2103	4.3	6.2	6.5	126	12	First of Night
07:35	08:07					4.0	4.7	4.7	194	9	Stack/Re-stack
12:27	12:33	0.71	1.09	80	-536	3.4	4.4	4.4	179	10	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6647	04:55-04:55	00:00	issues when new targets accepted

TO Comments	Periods of clouds and poor seeing.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000018_01	Cd-A_B	00:00	29			LRS2	cal							Yes
lrs20000018_02	Cd-A_B	00:02	29			LRS2	cal							Yes
lrs20000018_03	Cd-A_B	00:03	29			LRS2	cal							Yes
0001	UNe Slave Cal	00:05	426			HPF	cal							Yes
lrs20000019_01	FeAr_R	00:05	15			LRS2	cal							Yes
lrs20000019_02	FeAr_R	00:06	15			LRS2	cal							Yes
lrs20000019_03	FeAr_R	00:07	15			LRS2	cal							Yes
lrs20000020_01	Hg_R	00:08	20			LRS2	cal							Yes
lrs20000020_02	Hg_R	00:10	20			LRS2	cal							Yes
lrs20000020_03	Hg_R	00:11	20			LRS2	cal							Yes
lrs20000021_01	Hg_B	00:12	15			LRS2	cal							Yes
0002	UNe Slave Cal	00:13	426			HPF	cal							Yes
lrs20000021_02	Hg_B	00:14	15			LRS2	cal							Yes
lrs20000021_03	Hg_B	00:15	15			LRS2	cal							Yes
0003	UNe Slave Cal	00:20	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	00:21	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	00:23	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	00:24	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	00:25	15			VIRUS	cal							Yes
virus0000002_02	Cd-A	00:27	15			VIRUS	cal							Yes
0004	UNe Slave Cal	00:28	426			HPF	cal							Yes
virus0000002_03	Cd-A	00:28	15			VIRUS	cal							Yes
virus0000003_01	Hg	00:30	15			VIRUS	cal							Yes
virus0000003_02	Hg	00:31	15			VIRUS	cal							Yes
virus0000003_03	Hg	00:32	15			VIRUS	cal							Yes
lrs20000001_01	bias	00:34	0			LRS2	cal							Yes
lrs20000001_02	bias	00:34	0			LRS2	cal							Yes
virus0000004_01	bias	00:34	0			VIRUS	cal							Yes
virus0000004_02	bias	00:35	0			VIRUS	cal							Yes
lrs20000001_03	bias	00:35	0			LRS2	cal							Yes
virus0000004_03	bias	00:36	0			VIRUS	cal							Yes
lrs20000001_04	bias	00:36	0			LRS2	cal							Yes
virus0000004_04	bias	00:36	0			VIRUS	cal							Yes
lrs20000001_05	bias	00:37	0			LRS2	cal							Yes
virus0000004_05	bias	00:37	0			VIRUS	cal							Yes
lrs20000001_06	bias	00:38	0			LRS2	cal							Yes
virus0000004_06	bias	00:38	0			VIRUS	cal							Yes
lrs20000001_07	bias	00:39	0			LRS2	cal							Yes
virus0000004_07	bias	00:39	0			VIRUS	cal							Yes
lrs20000001_08	bias	00:40	0			LRS2	cal							Yes
virus0000004_08	bias	00:40	0			VIRUS	cal							Yes
lrs20000001_09	bias	00:40	0			LRS2	cal							Yes
virus0000004_09	bias	00:41	0			VIRUS	cal							Yes
lrs20000001_10	bias	00:41	0			LRS2	cal							Yes
virus0000004_10	bias	00:42	0			VIRUS	cal							Yes
lrs20000001_11	bias	00:42	0			LRS2	cal							Yes
virus0000004_11	bias	00:43	0			VIRUS	cal							Yes
lrs20000002_01	skyflat	01:01	7			LRS2	cal							Yes
lrs20000003_01	skyflat	01:02	10			LRS2	cal							Yes
lrs20000004_01	skyflat	01:03	13			LRS2	cal							Yes
lrs20000005_01	skyflat	01:04	16			LRS2	cal							Yes
lrs20000006_01	skyflat	01:05	22			LRS2	cal							Yes
lrs20000007_01	skyflat	01:07	30			LRS2	cal							Yes
virus0000005_01	skyflat	01:09	7			VIRUS	cal							Yes
virus0000006_01	skyflat	01:10	10			VIRUS	cal							Yes
virus0000007_01	skyflat	01:12	14			VIRUS	cal							Yes
virus0000008_01	skyflat	01:13	18			VIRUS	cal							Yes
virus0000009_01	skyflat	01:15	26			VIRUS	cal							Yes
lrs20000008_01	dark	01:16	360			LRS2	cal							Yes
virus0000010_01	dark	01:16	360			VIRUS	cal							Yes
lrs20000008_02	dark	01:23	360			LRS2	cal							Yes
virus0000010_02	dark	01:23	360			VIRUS	cal							Yes
lrs20000008_03	dark	01:30	360			LRS2	cal							Yes
virus0000010_03	dark	01:30	360			VIRUS	cal							Yes
0005	QID 2756	01:52	532.5	6.1	UT26-1-014	HPF	sci	1.96	1.33	19.84	0.91	324		P4
virus0000011_01	parallel	01:52	583			VIRUS	sci							Yes
0006	LFC Cal	02:02	106.5			HPF	cal							Yes
virus0000012_01	parallel	02:10	1500			VIRUS	sci							Yes
0007	LFC Cal	02:11	106.5			HPF	cal							Yes
lrs20000009_01	QID 1437	02:11	1500	10.0	PSU26-1-012	LRS2-B	sci	2.16	1.16	19.65	0.70			Yes
0008	LFC Cal	02:13	106.5			HPF	cal							Yes
0009	LFC Cal	02:15	106.5			HPF	cal							Yes
virus0000012_02	parallel	02:37	1500			VIRUS	sci							Yes
lrs20000009_02	QID 1437	02:37	1500	1.0	PSU26-1-012	LRS2-B	sci	2.10	0.94	19.54	0.69			Yes
0010	LFC Cal	03:03	106.5			HPF	cal							Yes
virus0000013_01	parallel	03:09	1984			VIRUS	sci							Yes
0011	QID 2546	03:10	617.7	7.7	UT26-1-007	HPF	sci	1.90	0.73	19.13	0.80	50		Yes
0012	QID 2546	03:21	617.7	0.7	UT26-1-007	HPF	sci	1.87	0.73	19.11	0.81	47		Yes
0013	QID 2546	03:32	617.7	0.7	UT26-1-007	HPF	sci	1.82	0.72	18.98	0.82	39		Yes
0014	LFC Cal	03:44	106.5			HPF	cal							Yes
0015	QID 429	03:50	915.9	7.7	G26-1-002	HPF	sci	1.78	0.80	20.01	0.78	85		Yes
virus0000014_01	parallel	03:50	1959			VIRUS	sci							Yes
0016	QID 429	04:06	915.9	1.7	G26-1-002	HPF	sci	1.75	1.01	20.10	0.91	88		Yes
0017	LFC Cal	04:24	106.5			HPF	cal							Yes
0018	QID 1873	04:28	969.1	5.8	PSU26-1-007	HPF	sci	1.83	1.14	19.84	0.69	28		Yes
virus0000015_01	parallel	04:28	1023			VIRUS	sci							Yes
0019	LFC Cal	04:46	106.5			HPF	cal							Yes
0020	QID 2551	04:54	969.1	9.8	PSU26-1-019	HPF	sci	1.68	0.85	20.04	0.41	170	clouds	No
virus0000016_01	parallel	04:54	2047			VIRUS	sci							Yes
0021	QID 2551	05:11	969.1	0.8	PSU26-1-019	HPF	sci	1.57	0.85	19.91	0.33	148		No
0022	LFC Cal	05:29	106.5			HPF	cal							Yes
0023	HR4227_tell_std	05:42	117.2	15.0		HPF	telluric	1.82	1.02	19.86	0.53			No
virus0000017_01	HZ21_052_E	05:55	60	11.0		VIRUS	spec	2.00	1.08	21.22	0.49		clouds	No
virus0000017_02	HZ21_052_E	05:57	60	1.0		VIRUS	spec	2.14	1.12	21.03	0.36			No
virus0000017_03	HZ21_052_E	05:59	60	1.0		VIRUS	spec	2.34	1.01	20.95	0.33			No
virus0000018_01	HZ21_052_E	06:17	60	3.0		VIRUS	spec	1.92	1.13	21.56	0.70			Yes
virus0000020_01	HZ21_052_E	06:19	60	1.0		VIRUS	spec	1.92	1.04	21.64	0.81			Yes
virus0000020_02	HZ21_052_E	06:21	60	1.0		VIRUS	spec	1.85	1.02	21.63	0.81			Yes
virus0000020_03	HZ21_052_E	06:23	60	1.0		VIRUS	spec	1.91	1.02	21.61	0.73			Yes
0024	LFC Cal	06:26	106.5			HPF	cal							Yes
0025	QID 434	06:30	915.9	6.7	G26-1-002	HPF	sci	1.96	1.10	20.46	0.57	28		Yes
virus0000021_01	parallel	06:30	1959			VIRUS	sci							Yes
0026	QID 434	06:46	915.9	0.7	G26-1-002	HPF	sci	1.85	1.02	20.54	0.69	35		Yes
0027	LFC Cal	07:03	106.5			HPF	cal							Yes
lrs20000010_01	parallel	07:08	480			LRS2	sci							Yes
virus0000022_01	QID 2814	07:08	480	6.0	UT26-1-008	VIRUS	sci	1.76	0.97	21.80	0.89			Yes
0028	LFC Cal	07:09	106.5			HPF	cal							Yes
0029	LFC Cal	07:11	106.5			HPF	cal							Yes
0030	LFC Cal	07:13	106.5			HPF	cal							Yes
lrs20000010_02	parallel	07:18	480			LRS2	sci							Yes
virus0000022_02	QID 2814	07:18	480	2.0	UT26-1-008	VIRUS	sci	1.76	0.83	21.80	0.88			Yes
lrs20000010_03	parallel	07:27	480			LRS2	sci							Yes
virus0000022_03	QID 2814	07:27	480	1.0	UT26-1-008	VIRUS	sci	1.90	1.01	21.79	0.85			Yes
0031	LFC Cal	07:36	106.5			HPF	cal							Yes
0032	LFC Cal	07:38	106.5			HPF	cal							Yes
0033	LFC Cal	07:41	106.5			HPF	cal							Yes
virus0000023_01	parallel	08:14	1417			VIRUS	sci							Yes
0034	QID 2570	08:15	308.9	7.9	UT26-1-009	HPF	sci	1.52		20.42	0.87	111		Yes
0035	QID 2570	08:21	308.9	0.9	UT26-1-009	HPF	sci	1.55	0.87	20.41	0.86	100		Yes
0036	QID 2570	08:26	308.9	0.9	UT26-1-009	HPF	sci	1.41	1.17	20.43	0.87	115		Yes
0037	QID 2570	08:32	308.9	-0.1	UT26-1-009	HPF	sci	1.49	1.27	20.44	0.83	96		Yes
0038	LFC Cal	08:43	106.5			HPF	cal							Yes
lrs20000011_01	parallel	08:43	400			LRS2	sci							Yes
virus0000024_01	QID 2557	08:43	400	5.3	UT26-1-013	VIRUS	sci	1.44	1.36	21.86	0.93			Yes
0039	LFC Cal	08:45	106.5			HPF	cal							Yes
0040	LFC Cal	08:48	106.5			HPF	cal							Yes
lrs20000011_02	parallel	08:51	400			LRS2	sci							Yes
virus0000024_02	QID 2557	08:51	400	1.3	UT26-1-013	VIRUS	sci	1.29	0.82	21.88	0.90			Yes
lrs20000011_03	parallel	08:59	400			LRS2	sci							Yes
virus0000024_03	QID 2557	08:59	400	1.3	UT26-1-013	VIRUS	sci	1.32	0.89	21.87	0.92			Yes
lrs20000012_01	parallel	09:09	360			LRS2	sci							Yes
virus0000025_01	QID 380	09:09	360	4.0	UT26-1-008	VIRUS	sci	1.39	0.95	22.06	0.93			Yes
0041	LFC Cal	09:10	106.5			HPF	cal							Yes
0042	LFC Cal	09:12	106.5			HPF	cal							Yes
lrs20000012_02	parallel	09:17	360			LRS2	sci							Yes
virus0000025_02	QID 380	09:17	360	2.0	UT26-1-008	VIRUS	sci	1.44	1.01	22.04	0.91			Yes
lrs20000012_03	parallel	09:24	360			LRS2	sci							Yes
virus0000025_03	QID 380	09:24	360	1.0	UT26-1-008	VIRUS	sci	1.40	1.06	22.04	0.93			Yes
lrs20000013_01	FEIGE34_056_W	09:34	60	4.0		LRS2	spec	1.66	0.99	21.86	0.99			Yes
lrs20000014_01	FEIGE34_066_W	09:38	60	3.0		LRS2	spec	1.35	0.96	20.86	0.94			Yes
0043	LFC Cal	09:45	106.5			HPF	cal							Yes
lrs20000015_01	parallel	09:45	1000			LRS2	sci							Yes
virus0000026_01	QID 2793	09:45	1000	6.3	UT26-1-018	VIRUS	sci	1.56	1.18	21.92	0.85			Yes
0044	LFC Cal	09:48	106.5			HPF	cal							Yes
0045	LFC Cal	09:50	106.5			HPF	cal							Yes
lrs20000015_02	parallel	10:03	1000			LRS2	sci							Yes
virus0000026_02	QID 2793	10:03	1000	1.3	UT26-1-018	VIRUS	sci	1.53	0.90	21.93	0.87			Yes
lrs20000015_03	parallel	10:21	1000			LRS2	sci							Yes
virus0000026_03	QID 2793	10:21	1000	0.3	UT26-1-018	VIRUS	sci	1.68	0.87	22.01	0.89			Yes
lrs20000016_01	parallel	10:42	360			LRS2	sci							Yes
virus0000027_01	QID 1986	10:42	360	5.0	UT26-1-008	VIRUS	sci	1.36	1.03	21.97	0.90			Yes
0046	LFC Cal	10:43	106.5			HPF	cal							Yes
0047	LFC Cal	10:45	106.5			HPF	cal							Yes
lrs20000016_02	parallel	10:50	360			LRS2	sci							Yes
virus0000027_02	QID 1986	10:50	360	2.0	UT26-1-008	VIRUS	sci	1.32	0.96	21.94	0.90			Yes
lrs20000016_03	parallel	10:57	360			LRS2	sci							Yes
virus0000027_03	QID 1986	10:57	360	1.0	UT26-1-008	VIRUS	sci	1.30	1.01	21.96	0.86			Yes
0048	QID 2747	11:10	42.6	7.3	UT26-1-014	HPF	sci	2.35	2.21	20.29	0.94	423		Yes
0049	LFC Cal	11:12	106.5			HPF	cal							Yes
0050	QID 1503	11:18	969.1	7.8	UT26-1-010	HPF	sci	2.35	2.49	20.30	0.97	100		Yes
virus0000028_01	parallel	11:18	2047			VIRUS	sci							Yes
0051	QID 1503	11:36	969.1	0.8	UT26-1-010	HPF	sci	2.53	3.34	20.36	0.93	106		Yes
0052	LFC Cal	11:53	106.5			HPF	cal							Yes
lrs20000017_01	QID 83	11:57	240	5.0	PSU26-1-003	LRS2-B	sci	3.57	3.27	21.89	0.92			P4
0053	LFC Cal	11:58	106.5			HPF	cal							Yes
0054	LFC Cal	12:08	106.5			HPF	cal							Yes
virus0000029_01	parallel	12:08	420			VIRUS	sci							Yes
lrs20000018_01	QID 60	12:08	420	7.0	PSU26-1-003	LRS2-R	sci	2.88	2.70	20.99	0.98			P4
0055	LFC Cal	12:11	106.5			HPF	cal							Yes
0056	LFC Cal	12:13	106.5			HPF	cal							Yes
0057	LFC Cal	12:21	106.5			HPF	cal							Yes
virus0000030_01	parallel	12:21	300			VIRUS	sci							Yes
lrs20000019_01	QID 35	12:21	300	6.0	PSU26-1-003	LRS2-R	sci	2.11	2.49	20.76	0.78			P4
0058	LFC Cal	12:24	106.5			HPF	cal							Yes
lrs20000020_01	bias	12:27	0			LRS2	cal							Yes
virus0000031_01	bias	12:28	0			VIRUS	cal							Yes
virus0000032_01	Cd-A	12:33	15		ENG26-1-002	VIRUS	cal							Yes
virus0000033_01	Hg	12:34	15		ENG26-1-002	VIRUS	cal							Yes
0059	Dark	12:41	319.5			HPF	cal							Yes
0060	Quartz FCU	12:53	74.5			HPF	cal							Yes
0061	Quartz FCU	12:54	74.5			HPF	cal							Yes
0062	Quartz FCU	12:56	74.5			HPF	cal							Yes
0063	Quartz FCU	12:58	74.5			HPF	cal							Yes
0064	Quartz FCU	13:00	74.5			HPF	cal							Yes
0065	Quartz FCU	13:01	74.5			HPF	cal							Yes
0066	Quartz FCU	13:03	74.5			HPF	cal							Yes
0067	Alpha Bright Cal	13:06	85.2			HPF	cal							Yes
0068	Alpha Bright Cal	13:08	85.2			HPF	cal							Yes
0069	Alpha Bright Cal	13:09	85.2			HPF	cal							Yes
0070	Alpha Bright Cal	13:11	85.2			HPF	cal							Yes
0071	LFC FCU	13:14	106.5			HPF	cal							Yes
0072	LFC FCU	13:16	106.5			HPF	cal							Yes
0073	LFC FCU	13:19	106.5			HPF	cal							Yes
0074	LFC FCU	13:21	106.5			HPF	cal							Yes
0075	LFC FCU	13:23	106.5			HPF	cal							Yes
0076	LFC FCU	13:26	106.5			HPF	cal							Yes
0077	LFC Cal	13:29	106.5			HPF	cal							Yes
0078	LFC Cal	13:31	106.5			HPF	cal							Yes
0079	Etalon Cal	13:39	159.8			HPF	cal							Yes
0080	Etalon Cal	13:42	159.8			HPF	cal							Yes
0081	Etalon Cal	13:45	159.8			HPF	cal							Yes
0082	Etalon Cal	13:48	159.8			HPF	cal							Yes
0083	UNe Slave Cal	13:52	426			HPF	cal							Yes
0084	UNe Slave Cal	14:00	426			HPF	cal							Yes
0085	UNe Slave Cal	14:07	426			HPF	cal							Yes
0086	UNe Slave Cal	14:15	426			HPF	cal							Yes
0087	UNe Slave Cal	14:23	426			HPF	cal							Yes
0088	UNe Slave Cal	14:31	426			HPF	cal							Yes
virus0008103_01	dark	18:44	20			VIRUS	cal							Yes
virus0008103_02	dark	18:45	20			VIRUS	cal							Yes
virus0008104_01	flat_ldls_long	18:49	15			VIRUS	cal							Yes
virus0008104_02	flat_ldls_long	18:51	15			VIRUS	cal							Yes
virus0008105_01	bias	18:52	0			VIRUS	cal							Yes
virus0008105_02	bias	18:53	0			VIRUS	cal							Yes
virus0008106_01	dark	20:01	20			VIRUS	cal							Yes
virus0008106_02	dark	20:03	20			VIRUS	cal							Yes
virus0008107_01	flat_ldls_long	20:06	15			VIRUS	cal							Yes
virus0008107_02	flat_ldls_long	20:08	15			VIRUS	cal							Yes
virus0008108_01	bias	20:09	0			VIRUS	cal							Yes
virus0008108_02	bias	20:10	0			VIRUS	cal							Yes
virus0008109_01	dark	22:02	20			VIRUS	cal							Yes
virus0008109_02	dark	22:04	20			VIRUS	cal							Yes
virus0008110_01	flat_ldls_long	22:07	15			VIRUS	cal							Yes
virus0008110_02	flat_ldls_long	22:09	15			VIRUS	cal							Yes
virus0008111_01	bias	22:10	0			VIRUS	cal							Yes
virus0008111_02	bias	22:11	0			VIRUS	cal							Yes
0104	LFC Cal	22:46	106.5			HPF	cal							Yes
lrs20009900_01	bias	22:55	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:56	20			VIRUS	cal							Yes
virus0009901_01	bias	22:58	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:58	20			LRS2	cal							Yes
virus0009902_01	dark	23:00	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	23:01	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	23:02	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	23:03	15			LRS2	cal							Yes
0105	Dark	23:07	319.5			HPF	cal							Yes
0106	Quartz FCU	23:14	74.5			HPF	cal							Yes
0107	Quartz FCU	23:16	74.5			HPF	cal							Yes
0108	Quartz FCU	23:17	74.5			HPF	cal							Yes
0109	Quartz FCU	23:19	74.5			HPF	cal							Yes
0110	Quartz FCU	23:21	74.5			HPF	cal							Yes
0111	Quartz FCU	23:23	74.5			HPF	cal							Yes
0112	Quartz FCU	23:25	74.5			HPF	cal							Yes
0113	Alpha Bright Cal	23:27	85.2			HPF	cal							Yes
0114	Alpha Bright Cal	23:29	85.2			HPF	cal							Yes
0115	Alpha Bright Cal	23:31	85.2			HPF	cal							Yes
0116	Alpha Bright Cal	23:33	85.2			HPF	cal							Yes
0117	LFC FCU	23:35	106.5			HPF	cal							Yes
0118	LFC FCU	23:38	106.5			HPF	cal							Yes
0119	LFC Cal	23:41	106.5			HPF	cal							Yes
0120	LFC Cal	23:43	106.5			HPF	cal							Yes
0121	Etalon Cal	23:46	159.8			HPF	cal							Yes
0122	UNe Slave Cal	23:49	426			HPF	cal							Yes
lrs20000016_01	flat_Qth_R	23:50	15			LRS2	cal							Yes
lrs20000016_02	flat_Qth_R	23:51	15			LRS2	cal							Yes
lrs20000016_03	flat_Qth_R	23:53	15			LRS2	cal							Yes
lrs20000016_04	flat_Qth_R	23:54	15			LRS2	cal							Yes
lrs20000016_05	flat_Qth_R	23:55	15			LRS2	cal							Yes
lrs20000017_01	flat_ldls_long_B	23:56	20			LRS2	cal							Yes
0123	UNe Slave Cal	23:57	426			HPF	cal							Yes
lrs20000017_02	flat_ldls_long_B	23:58	20			LRS2	cal							Yes
lrs20000017_03	flat_ldls_long_B	23:59	20			LRS2	cal							Yes