HET Night Report Reader

Civil Date	Ephemerides
2026-01-21	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	00:30	01:17	01:46	12:28	12:57	13:45	-	03:18
Night Length	10:42		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
00:40	7.5	9.4	13:37	twilight	12:57
Total Time Open					12:57

Program	Night Priority	Science
01:46	Idle due to weather (clouds)
02:18	Science
04:19	Idle due to weather (clouds)
04:59	Science
07:26	Idle due to weather (clouds)
08:49	Science
09:18	Idle due to weather (clouds)
09:56	Science
10:39	Idle due to weather (clouds)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
00:56	01:38	0.47	0.73	0	+259	8.2	8.7	8.8	209	5	First of Night
12:08	12:15	0.50	0.80	85	+260	9.2	9.1	9.1	238	12	Post-Observing

Problem Reports					no PRs

TO Comments	Persistent clouds

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	Quartz FCU	00:05	74.5			HPF	cal							Yes
0002	Quartz FCU	00:07	74.5			HPF	cal							Yes
0003	Quartz FCU	00:09	74.5			HPF	cal							Yes
0004	Quartz FCU	00:11	74.5			HPF	cal							Yes
0005	Quartz FCU	00:12	74.5			HPF	cal							Yes
0006	Quartz FCU	00:14	74.5			HPF	cal							Yes
0007	Quartz FCU	00:16	74.5			HPF	cal							Yes
0008	Alpha Bright Cal	00:18	85.2			HPF	cal							Yes
0009	Alpha Bright Cal	00:20	85.2			HPF	cal							Yes
0010	Alpha Bright Cal	00:22	85.2			HPF	cal							Yes
0011	Alpha Bright Cal	00:24	85.2			HPF	cal							Yes
0012	LFC FCU	00:27	106.5			HPF	cal							Yes
0013	LFC FCU	00:29	106.5			HPF	cal							Yes
0014	LFC Cal	00:32	106.5			HPF	cal							Yes
0015	LFC Cal	00:34	106.5			HPF	cal							Yes
0016	Etalon Cal	00:37	159.8			HPF	cal							Yes
virus0000001_01	skyflat	00:43	7			VIRUS	cal							Yes
virus0000002_01	skyflat	00:44	10			VIRUS	cal							Yes
virus0000003_01	skyflat	00:46	14			VIRUS	cal							Yes
virus0000004_01	skyflat	00:47	18			VIRUS	cal							Yes
virus0000005_01	skyflat	00:49	26			VIRUS	cal							Yes
0017	UNe Slave Cal	00:52	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:53	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:54	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:55	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:56	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:57	15			LRS2	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:59	20			LRS2	cal							Yes
0018	UNe Slave Cal	00:59	426			HPF	cal							Yes
lrs20000002_02	flat_ldls_long_B	01:00	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	01:01	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	01:03	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	01:04	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	01:06	29			LRS2	cal							Yes
0019	UNe Slave Cal	01:07	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	01:07	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	01:08	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	01:10	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	01:11	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	01:12	20			LRS2	cal							Yes
lrs20000005_03	Hg_R	01:13	20			LRS2	cal							Yes
lrs20000006_01	Hg_B	01:15	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	01:16	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	01:17	15			LRS2	cal							Yes
virus0000006_01	flat_ldls_long	01:24	15			VIRUS	cal							Yes
virus0000006_02	flat_ldls_long	01:25	15			VIRUS	cal							Yes
virus0000006_03	flat_ldls_long	01:27	15			VIRUS	cal							Yes
virus0000007_01	Cd-A	01:28	15			VIRUS	cal							Yes
virus0000007_02	Cd-A	01:30	15			VIRUS	cal							Yes
virus0000007_03	Cd-A	01:31	15			VIRUS	cal							Yes
virus0000008_01	Hg	01:33	15			VIRUS	cal							Yes
virus0000008_02	Hg	01:34	15			VIRUS	cal							Yes
virus0000008_03	Hg	01:35	15			VIRUS	cal							Yes
0020	QID 1477	01:44	969.1	4.8	UT26-1-010	HPF	sci	1.30		19.98	0.51	94	clouds	No
virus0000009_01	parallel	01:44	2047			VIRUS	sci							Yes
0021	QID 1477	02:01	969.1	1.8	UT26-1-010	HPF	sci	1.22		19.91	0.21	55		No
0022	LFC Cal	02:19	106.5			HPF	cal							Yes
0023	LFC Cal	02:27	106.5			HPF	cal							Yes
virus0000010_01	parallel	02:27	3300			VIRUS	sci							Yes
lrs20000007_01	QID 1587	02:27	3300	9.0	M26-1-011	LRS2-R	sci	1.67		20.77	0.55		passing clouds	Yes
0024	LFC Cal	02:30	106.5			HPF	cal							Yes
0025	LFC Cal	02:32	106.5			HPF	cal							Yes
virus0000011_01	parallel	03:25	1023			VIRUS	sci							Yes
0026	QID 1778	03:26	969.1	3.8	UT26-1-014	HPF	sci	1.62		20.35	0.67	354		P4
0027	LFC Cal	03:43	106.5			HPF	cal							Yes
0028	LFC Cal	03:49	106.5			HPF	cal							Yes
lrs20000008_01	parallel	03:49	540			LRS2	sci							Yes
virus0000012_01	QID 365	03:49	540	7.0	UT26-1-008	VIRUS	sci	1.23		21.76	0.71			Yes
0029	LFC Cal	03:52	106.5			HPF	cal							Yes
0030	LFC Cal	03:54	106.5			HPF	cal							Yes
lrs20000008_02	parallel	03:59	540			LRS2	sci							Yes
virus0000012_02	QID 365	03:59	540	1.0	UT26-1-008	VIRUS	sci	1.19		21.71	0.57			Yes
lrs20000008_03	parallel	04:10	540			LRS2	sci							Yes
virus0000012_03	QID 365	04:10	540	2.0	UT26-1-008	VIRUS	sci	1.13		21.70	0.51			Yes
0031	QID 1410	04:26	969.1	6.8	PSU26-1-002	HPF	sci	1.39		20.30	0.50	217	clouds	No
virus0000013_01	parallel	04:26	2047			VIRUS	sci							Yes
0032	QID 1410	04:43	969.1	0.8	PSU26-1-002	HPF	sci	1.35		20.26	0.25	151		No
0033	LFC Cal	05:01	106.5			HPF	cal							Yes
0034	QID 1526	05:06	330.2	7.5	UT26-1-010	HPF	sci	1.36		20.44	0.83	376		Yes
virus0000014_01	parallel	05:06	2203			VIRUS	sci							Yes
0035	QID 1526	05:12	330.2	0.5	UT26-1-010	HPF	sci	1.42	0.76	20.40	0.76	358		Yes
0036	QID 1526	05:19	330.2	0.5	UT26-1-010	HPF	sci	1.42	0.88	20.35	0.69	340		Yes
0037	QID 1526	05:25	330.2	0.5	UT26-1-010	HPF	sci	1.49	1.03	20.34	0.68	329		Yes
0038	QID 1526	05:31	330.2	0.5	UT26-1-010	HPF	sci	1.49	1.19	20.36	0.67	316		Yes
0039	QID 1526	05:37	330.2	0.5	UT26-1-010	HPF	sci	1.44	0.97	20.42	0.78	344		Yes
0040	LFC Cal	05:44	106.5			HPF	cal							Yes
0041	LFC Cal	05:53	106.5			HPF	cal							Yes
virus0000015_01	parallel	05:53	1200			VIRUS	sci							Yes
lrs20000009_01	QID 1424	05:53	1200	11.0	PSU26-1-012	LRS2-B	sci	1.63	1.42	21.64	0.74			Yes
0042	LFC Cal	05:55	106.5			HPF	cal							Yes
0043	LFC Cal	05:58	106.5			HPF	cal							Yes
virus0000015_02	parallel	06:14	1200			VIRUS	sci							Yes
lrs20000009_02	QID 1424	06:14	1200	1.0	PSU26-1-012	LRS2-B	sci	1.59	1.54	21.54	0.52			Yes
0044	QID 1764	06:41	532.5	7.1	UT26-1-014	HPF	sci	1.66	1.25	20.46	0.62	430		P4
virus0000016_01	parallel	06:41	583			VIRUS	sci							Yes
0045	LFC Cal	06:51	106.5			HPF	cal							Yes
0046	LFC Cal	06:56	106.5			HPF	cal							Yes
lrs20000010_01	parallel	06:56	5400			LRS2	sci							Yes
virus0000017_01	QID 380	06:56	0	0.0	UT26-1-008	VIRUS	sci	1.77	1.18	21.97	0.65		wrong exp time entered	No
lrs20000011_01	parallel	06:57	540			LRS2	sci							Yes
virus0000018_01	QID 380	06:57	540	7.0	UT26-1-008	VIRUS	sci	1.72	1.10	21.96	0.66			Yes
0047	LFC Cal	06:58	106.5			HPF	cal							Yes
0048	LFC Cal	07:01	106.5			HPF	cal							Yes
0049	LFC Cal	07:03	106.5			HPF	cal							Yes
0050	LFC Cal	07:05	106.5			HPF	cal							Yes
lrs20000011_02	parallel	07:07	540			LRS2	sci							Yes
virus0000018_02	QID 380	07:07	540	1.0	UT26-1-008	VIRUS	sci	1.90	1.26	21.99	0.64			Yes
0051	LFC Cal	07:08	106.5			HPF	cal							Yes
lrs20000011_03	parallel	07:17	540			LRS2	sci							Yes
virus0000018_03	QID 380	07:17	540	1.0	UT26-1-008	VIRUS	sci	1.75	1.21	22.05	0.64			Yes
0052	QID 1956	07:36	713.6	5.1	UT26-1-010	HPF	sci	1.50	1.20	20.23	0.40	201	clouds	No
virus0000019_01	parallel	07:36	2314			VIRUS	sci							Yes
0053	QID 1956	07:49	713.6	1.1	UT26-1-010	HPF	sci	1.51	1.07	20.31	0.40	275		No
0054	QID 1956	08:02	713.6	1.1	UT26-1-010	HPF	sci	1.54	1.21	20.28	0.29	204		No
0055	LFC Cal	08:15	106.5			HPF	cal							Yes
lrs20000012_01	bias	08:19	0			LRS2	cal							Yes
virus0000020_01	bias	08:19	0			VIRUS	cal							Yes
lrs20000012_02	bias	08:20	0			LRS2	cal							Yes
virus0000020_02	bias	08:20	0			VIRUS	cal							Yes
lrs20000012_03	bias	08:21	0			LRS2	cal							Yes
virus0000020_03	bias	08:21	0			VIRUS	cal							Yes
lrs20000012_04	bias	08:21	0			LRS2	cal							Yes
virus0000020_04	bias	08:22	0			VIRUS	cal							Yes
lrs20000012_05	bias	08:22	0			LRS2	cal							Yes
virus0000020_05	bias	08:23	0			VIRUS	cal							Yes
lrs20000012_06	bias	08:23	0			LRS2	cal							Yes
virus0000020_06	bias	08:23	0			VIRUS	cal							Yes
lrs20000012_07	bias	08:24	0			LRS2	cal							Yes
virus0000020_07	bias	08:24	0			VIRUS	cal							Yes
lrs20000012_08	bias	08:25	0			LRS2	cal							Yes
virus0000020_08	bias	08:25	0			VIRUS	cal							Yes
lrs20000012_09	bias	08:26	0			LRS2	cal							Yes
virus0000020_09	bias	08:26	0			VIRUS	cal							Yes
lrs20000012_10	bias	08:27	0			LRS2	cal							Yes
virus0000020_10	bias	08:27	0			VIRUS	cal							Yes
lrs20000012_11	bias	08:28	0			LRS2	cal							Yes
virus0000020_11	bias	08:28	0			VIRUS	cal							Yes
lrs20000013_01	dark	08:28	360			LRS2	cal							Yes
virus0000021_01	dark	08:29	360			VIRUS	cal							Yes
lrs20000013_02	dark	08:35	360			LRS2	cal							Yes
virus0000021_02	dark	08:36	360			VIRUS	cal							Yes
lrs20000013_03	dark	08:42	360			LRS2	cal							Yes
virus0000021_03	dark	08:42	360			VIRUS	cal							Yes
0056	LFC Cal	08:54	106.5			HPF	cal							Yes
lrs20000014_01	parallel	08:54	420			LRS2	sci							Yes
virus0000022_01	QID 361	08:54	420	5.0	UT26-1-008	VIRUS	sci	1.69		21.75	0.79			Yes
0057	LFC Cal	08:57	106.5			HPF	cal							Yes
0058	LFC Cal	08:59	106.5			HPF	cal							Yes
lrs20000014_02	parallel	09:02	420			LRS2	sci							Yes
virus0000022_02	QID 361	09:02	420	1.0	UT26-1-008	VIRUS	sci	1.62	1.18	21.69	0.59			Yes
lrs20000014_03	parallel	09:11	420			LRS2	sci							Yes
virus0000022_03	QID 361	09:11	420	2.0	UT26-1-008	VIRUS	sci	1.54	1.06	21.68	0.52			Yes
virus0000023_01	parallel	09:26	1849			VIRUS	sci							Yes
0059	QID 1613	09:27	862.6	8.6	UT26-1-005	HPF	sci	1.82	0.99	20.33	0.66	55	clouds	No
0060	QID 1613	09:42	862.6	0.6	UT26-1-005	HPF	sci	1.89	1.23	20.32	0.82	66		No
lrs20000015_01	parallel	10:06	600			LRS2	sci							Yes
virus0000024_01	QID 510	10:06	600	10.0	UT26-1-018	VIRUS	sci	1.53	1.15	21.85	0.81			Yes
0061	LFC Cal	10:07	106.5			HPF	cal							Yes
0062	LFC Cal	10:09	106.5			HPF	cal							Yes
0063	LFC Cal	10:11	106.5			HPF	cal							Yes
lrs20000015_02	parallel	10:18	600			LRS2	sci							Yes
virus0000024_02	QID 510	10:18	600	2.0	UT26-1-018	VIRUS	sci	1.50	1.08	21.82	0.79			Yes
lrs20000015_03	parallel	10:29	600			LRS2	sci							Yes
virus0000024_03	QID 510	10:29	600	1.0	UT26-1-018	VIRUS	sci	1.49	1.00	21.67	0.50			No
virus0000025_01	parallel	10:46	2047			VIRUS	sci							Yes
0064	QID 1498	10:47	969.1	7.8	UT26-1-010	HPF	sci	1.85	1.18	20.34	0.30	33	clouds	No
0065	QID 1498	11:04	969.1	0.8	UT26-1-010	HPF	sci	1.45	1.02	20.35	0.12	14		No
0066	LFC Cal	11:22	106.5			HPF	cal							Yes
lrs20000016_01	bias	12:43	0			LRS2	cal							Yes
virus0000026_01	bias	12:44	0			VIRUS	cal							Yes
virus0000027_01	Cd-A	12:48	15		ENG26-1-002	VIRUS	cal							Yes
virus0000028_01	Hg	12:50	15		ENG26-1-002	VIRUS	cal							Yes
virus0000029_01	skyflat	13:24	25			VIRUS	cal							Yes
virus0000030_01	skyflat	13:25	18			VIRUS	cal							Yes
virus0000031_01	skyflat	13:27	15			VIRUS	cal							Yes
virus0000032_01	skyflat	13:32	25			VIRUS	cal							Yes
virus0000033_01	skyflat	13:33	18			VIRUS	cal							Yes
virus0000034_01	skyflat	13:34	15			VIRUS	cal							Yes
0067	Dark	13:38	319.5			HPF	cal							Yes
0068	Quartz FCU	13:50	74.5			HPF	cal							Yes
0069	Quartz FCU	13:51	74.5			HPF	cal							Yes
0070	Quartz FCU	13:53	74.5			HPF	cal							Yes
0071	Quartz FCU	13:55	74.5			HPF	cal							Yes
0072	Quartz FCU	13:57	74.5			HPF	cal							Yes
0073	Quartz FCU	13:59	74.5			HPF	cal							Yes
0074	Quartz FCU	14:00	74.5			HPF	cal							Yes
0075	Alpha Bright Cal	14:03	85.2			HPF	cal							Yes
0076	Alpha Bright Cal	14:05	85.2			HPF	cal							Yes
0077	Alpha Bright Cal	14:07	85.2			HPF	cal							Yes
0078	Alpha Bright Cal	14:09	85.2			HPF	cal							Yes
0079	LFC FCU	14:11	106.5			HPF	cal							Yes
0080	LFC FCU	14:14	106.5			HPF	cal							Yes
0081	LFC FCU	14:16	106.5			HPF	cal							Yes
0082	LFC FCU	14:18	106.5			HPF	cal							Yes
0083	LFC FCU	14:20	106.5			HPF	cal							Yes
0084	LFC FCU	14:23	106.5			HPF	cal							Yes
0085	LFC Cal	14:26	106.5			HPF	cal							Yes
0086	LFC Cal	14:28	106.5			HPF	cal							Yes
0087	Etalon Cal	14:36	159.8			HPF	cal							Yes
0088	Etalon Cal	14:39	159.8			HPF	cal							Yes
0089	Etalon Cal	14:42	159.8			HPF	cal							Yes
0090	Etalon Cal	14:45	159.8			HPF	cal							Yes
0091	UNe Slave Cal	14:49	426			HPF	cal							Yes
0092	UNe Slave Cal	14:57	426			HPF	cal							Yes
0098	LFC Cal	23:36	106.5			HPF	cal							Yes
lrs20009900_01	bias	23:48	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	23:49	20			VIRUS	cal							Yes
virus0009901_01	bias	23:50	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	23:51	20			LRS2	cal							Yes
virus0009902_01	dark	23:52	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	23:53	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	23:55	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	23:56	15			LRS2	cal							Yes
0099	Dark	23:59	319.5			HPF	cal							Yes