HET Night Report Reader

Civil Date	Ephemerides
2026-05-13	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:50	02:40	03:13	10:30	11:03	11:55	10:14	-
Night Length	7:17		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
Sergey Rostopchin	Justen Pautzke	-	-

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:40	23.3	30.8	03:56	clouds	02:16
04:21	19.8	20.9	04:55	clouds	00:34
05:29	19.2	20.5	07:38	clouds	02:09
08:26	19.6	20.0	08:53	radar	00:27
Total Time Open					5:26

Program	Night Priority	Science
03:13	Idle due to weather (clouds)
05:40	Science
07:29	Idle due to weather (clouds)
08:24	Science
08:34	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
02:21	03:00	0.46	0.72	-362	-608	21.7	21.4	21.3	131	9	First of Night
05:40	06:14	0.45	0.69	-387	1007	18.9	19.8	20.0	160	8	Stack/Re-stack

Problem Reports					no PRs

Ops Comments	none

TO Comments	Periods of clouds and radar. No other issues.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000032_03	dark	00:02	360			LRS2	cal							Yes
virus0000032_03	dark	00:03	360			VIRUS	cal							Yes
0001	twilight	01:47	298.2			HPF	cal					427		Yes
lrs20000001_01	skyflat	01:55	7			LRS2	cal							Yes
lrs20000002_01	skyflat	01:56	10			LRS2	cal							Yes
lrs20000003_01	skyflat	01:58	13			LRS2	cal							Yes
lrs20000004_01	skyflat	01:59	16			LRS2	cal							Yes
lrs20000005_01	skyflat	02:00	22			LRS2	cal							Yes
lrs20000006_01	skyflat	02:01	30			LRS2	cal							Yes
virus0000001_01	skyflat	02:05	7			VIRUS	cal							Yes
virus0000002_01	skyflat	02:06	10			VIRUS	cal							Yes
virus0000003_01	skyflat	02:07	14			VIRUS	cal							Yes
virus0000004_01	skyflat	02:09	18			VIRUS	cal							Yes
virus0000005_01	skyflat	02:10	26			VIRUS	cal							Yes
0002	LFC Cal	02:22	106.5			HPF	cal							Yes
0003	LFC Cal	02:25	106.5			HPF	cal							Yes
0004	LFC Cal	02:27	106.5			HPF	cal							Yes
0005	LFC Cal	03:18	106.5			HPF	cal							Yes
virus0000006_01	parallel	03:18	2400			VIRUS	sci							Yes
lrs20000007_01	QID 1	03:18	1560	10.0	PSU26-2-005	LRS2-B	sci	1.59	1.03	21.68	0.93		clouds	No
0006	LFC Cal	03:20	106.5			HPF	cal							Yes
0007	LFC Cal	03:23	106.5			HPF	cal							Yes
0008	LFC Cal	05:37	106.5			HPF	cal							Yes
0009	LFC Cal	05:39	106.5			HPF	cal							Yes
0010	LFC Cal	05:42	106.5			HPF	cal							Yes
0011	LFC Cal	06:18	106.5			HPF	cal							Yes
virus0000007_01	parallel	06:18	300			VIRUS	sci							Yes
lrs20000008_01	QID 588	06:18	300	4.0	PSU26-2-001	LRS2-B	sci	1.75	1.08	21.97	0.79			P4
0012	LFC Cal	06:21	106.5			HPF	cal							Yes
0013	LFC Cal	06:25	106.5			HPF	cal							Yes
0014	QID 478	06:30	915.9	7.7	G26-2-002	HPF	sci	1.48	1.33	20.34	0.75	36		Yes
virus0000008_01	parallel	06:30	1959			VIRUS	sci							Yes
0015	QID 478	06:47	915.9	0.7	G26-2-002	HPF	sci	1.99	1.10	20.32	0.82	28		Yes
0016	LFC Cal	07:03	106.5			HPF	cal							Yes
0017	LFC Cal	07:10	106.5			HPF	cal							Yes
virus0000009_01	parallel	07:10	300			VIRUS	sci							Yes
lrs20000009_01	QID 381	07:10	300	8.0	UT26-2-017	LRS2-B	sci	1.64	1.07	21.98	0.73			Yes
0018	LFC Cal	07:12	106.5			HPF	cal							Yes
0019	LFC Cal	07:19	106.5			HPF	cal							Yes
virus0000010_01	parallel	07:19	600			VIRUS	sci							Yes
lrs20000010_01	QID 382	07:19	600	4.0	UT26-2-017	LRS2-R	sci	1.63	1.06	21.09	0.80			Yes
0020	LFC Cal	07:22	106.5			HPF	cal							Yes
0021	LFC Cal	07:24	106.5			HPF	cal							Yes
lrs20000011_01	HD180609_056_E	08:29	60	5.0		LRS2	spec	1.73		21.64	1.02			Yes
lrs20000012_01	HD180609_066_E	08:33	60	3.0		LRS2	spec	1.79		20.70	0.90			Yes
0022	QID 863	08:42	841.4	8.0	UT26-2-009	HPF	sci	1.40		20.10	0.62	24	clouds. aborted	No
virus0000011_01	parallel	08:42	3646			VIRUS	sci							Yes
0023	LFC Cal	09:14	106.5			HPF	cal							Yes
0024	LFC Cal	09:17	106.5			HPF	cal							Yes
0025	LFC Cal	09:19	106.5			HPF	cal							Yes
lrs20000013_01	bias	10:31	0			LRS2	cal							Yes
virus0000012_01	bias	10:31	0			VIRUS	cal							Yes
virus0000013_01	Cd-A	10:35	15		ENG26-2-002	VIRUS	cal							Yes
virus0000014_01	Hg	10:37	15		ENG26-2-002	VIRUS	cal							Yes
0026	Dark	10:43	319.5			HPF	cal							Yes
0027	Quartz FCU	10:55	74.5			HPF	cal							Yes
0028	Quartz FCU	10:57	74.5			HPF	cal							Yes
0029	Quartz FCU	10:58	74.5			HPF	cal							Yes
0030	Quartz FCU	11:00	74.5			HPF	cal							Yes
0031	Quartz FCU	11:02	74.5			HPF	cal							Yes
0032	Quartz FCU	11:04	74.5			HPF	cal							Yes
0033	Quartz FCU	11:06	74.5			HPF	cal							Yes
0034	Alpha Bright Cal	11:08	85.2			HPF	cal							Yes
0035	Alpha Bright Cal	11:10	85.2			HPF	cal							Yes
0036	Alpha Bright Cal	11:12	85.2			HPF	cal							Yes
0037	Alpha Bright Cal	11:14	85.2			HPF	cal							Yes
0038	LFC FCU	11:16	106.5			HPF	cal							Yes
0039	LFC FCU	11:19	106.5			HPF	cal							Yes
0040	LFC FCU	11:21	106.5			HPF	cal							Yes
0041	LFC FCU	11:23	106.5			HPF	cal							Yes
0042	LFC FCU	11:26	106.5			HPF	cal							Yes
0043	LFC FCU	11:28	106.5			HPF	cal							Yes
0044	LFC Cal	11:31	106.5			HPF	cal							Yes
0045	LFC Cal	11:33	106.5			HPF	cal							Yes
0046	Etalon Cal	11:41	159.8			HPF	cal							Yes
0047	Etalon Cal	11:44	159.8			HPF	cal							Yes
0048	Etalon Cal	11:47	159.8			HPF	cal							Yes
0049	Etalon Cal	11:51	159.8			HPF	cal							Yes
0050	UNe Slave Cal	11:54	426			HPF	cal							Yes
0051	UNe Slave Cal	12:02	426			HPF	cal							Yes
0052	UNe Slave Cal	12:10	426			HPF	cal							Yes
0053	UNe Slave Cal	12:17	426			HPF	cal							Yes
0054	UNe Slave Cal	12:25	426			HPF	cal							Yes
0055	UNe Slave Cal	12:33	426			HPF	cal							Yes
lrs20009900_01	bias	21:58	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	21:59	20			VIRUS	cal							Yes
virus0009901_01	bias	22:00	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:01	20			LRS2	cal							Yes
virus0009902_01	dark	22:02	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:03	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:05	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:06	15			LRS2	cal							Yes
0075	LFC Cal	22:09	106.5			HPF	cal							Yes
0076	Dark	22:12	319.5			HPF	cal							Yes
0077	Quartz FCU	22:19	74.5			HPF	cal							Yes
0078	Quartz FCU	22:20	74.5			HPF	cal							Yes
0079	Quartz FCU	22:22	74.5			HPF	cal							Yes
0080	Quartz FCU	22:24	74.5			HPF	cal							Yes
0081	Quartz FCU	22:26	74.5			HPF	cal							Yes
0082	Quartz FCU	22:27	74.5			HPF	cal							Yes
0083	Quartz FCU	22:29	74.5			HPF	cal							Yes
0084	Alpha Bright Cal	22:32	85.2			HPF	cal							Yes
0085	Alpha Bright Cal	22:34	85.2			HPF	cal							Yes
0086	Alpha Bright Cal	22:35	85.2			HPF	cal							Yes
0087	Alpha Bright Cal	22:37	85.2			HPF	cal							Yes
0088	LFC FCU	22:40	106.5			HPF	cal							Yes
0089	LFC FCU	22:42	106.5			HPF	cal							Yes
0090	LFC Cal	22:45	106.5			HPF	cal							Yes
0091	LFC Cal	22:48	106.5			HPF	cal							Yes
0092	Etalon Cal	22:50	159.8			HPF	cal							Yes
0093	UNe Slave Cal	22:54	426			HPF	cal							Yes
lrs20000025_01	flat_Qth_R	22:55	15			LRS2	cal							Yes
lrs20000025_02	flat_Qth_R	22:56	15			LRS2	cal							Yes
lrs20000025_03	flat_Qth_R	22:58	15			LRS2	cal							Yes
lrs20000025_04	flat_Qth_R	22:59	15			LRS2	cal							Yes
lrs20000025_05	flat_Qth_R	23:00	15			LRS2	cal							Yes
lrs20000026_01	flat_ldls_long_B	23:01	20			LRS2	cal							Yes
0094	UNe Slave Cal	23:02	426			HPF	cal							Yes
lrs20000026_02	flat_ldls_long_B	23:03	20			LRS2	cal							Yes
lrs20000026_03	flat_ldls_long_B	23:04	20			LRS2	cal							Yes
lrs20000027_01	Cd-A_B	23:05	29			LRS2	cal							Yes
lrs20000027_02	Cd-A_B	23:07	29			LRS2	cal							Yes
lrs20000027_03	Cd-A_B	23:08	29			LRS2	cal							Yes
0095	UNe Slave Cal	23:09	426			HPF	cal							Yes
lrs20000028_01	FeAr_R	23:10	15			LRS2	cal							Yes
lrs20000028_02	FeAr_R	23:11	15			LRS2	cal							Yes
lrs20000028_03	FeAr_R	23:12	15			LRS2	cal							Yes
lrs20000029_01	Hg_R	23:13	20			LRS2	cal							Yes
lrs20000029_02	Hg_R	23:15	20			LRS2	cal							Yes
lrs20000029_03	Hg_R	23:16	20			LRS2	cal							Yes
0096	UNe Slave Cal	23:17	426			HPF	cal							Yes
lrs20000030_01	Hg_B	23:17	15			LRS2	cal							Yes
lrs20000030_02	Hg_B	23:18	15			LRS2	cal							Yes
lrs20000030_03	Hg_B	23:20	15			LRS2	cal							Yes
0097	UNe Slave Cal	23:25	426			HPF	cal							Yes
virus0000028_01	flat_ldls_long	23:26	15			VIRUS	cal							Yes
virus0000028_02	flat_ldls_long	23:28	15			VIRUS	cal							Yes
virus0000028_03	flat_ldls_long	23:29	15			VIRUS	cal							Yes
virus0000029_01	Cd-A	23:31	15			VIRUS	cal							Yes
virus0000029_02	Cd-A	23:32	15			VIRUS	cal							Yes
0098	UNe Slave Cal	23:33	426			HPF	cal							Yes
virus0000029_03	Cd-A	23:33	15			VIRUS	cal							Yes
virus0000030_01	Hg	23:35	15			VIRUS	cal							Yes
virus0000030_02	Hg	23:36	15			VIRUS	cal							Yes
virus0000030_03	Hg	23:38	15			VIRUS	cal							Yes
lrs20000031_01	bias	23:39	0			LRS2	cal							Yes
virus0000031_01	bias	23:39	0			VIRUS	cal							Yes
lrs20000031_02	bias	23:40	0			LRS2	cal							Yes
virus0000031_02	bias	23:40	0			VIRUS	cal							Yes
lrs20000031_03	bias	23:41	0			LRS2	cal							Yes
virus0000031_03	bias	23:41	0			VIRUS	cal							Yes
lrs20000031_04	bias	23:42	0			LRS2	cal							Yes
virus0000031_04	bias	23:42	0			VIRUS	cal							Yes
lrs20000031_05	bias	23:42	0			LRS2	cal							Yes
virus0000031_05	bias	23:43	0			VIRUS	cal							Yes
lrs20000031_06	bias	23:43	0			LRS2	cal							Yes
virus0000031_06	bias	23:44	0			VIRUS	cal							Yes
lrs20000031_07	bias	23:44	0			LRS2	cal							Yes
lrs20000031_08	bias	23:45	0			LRS2	cal							Yes
virus0000031_07	bias	23:45	0			VIRUS	cal							Yes
virus0000031_08	bias	23:45	0			VIRUS	cal							Yes
lrs20000031_09	bias	23:46	0			LRS2	cal							Yes
virus0000031_09	bias	23:46	0			VIRUS	cal							Yes
lrs20000031_10	bias	23:47	0			LRS2	cal							Yes
virus0000031_10	bias	23:47	0			VIRUS	cal							Yes
lrs20000031_11	bias	23:48	0			LRS2	cal							Yes
virus0000031_11	bias	23:48	0			VIRUS	cal							Yes
lrs20000032_01	dark	23:48	360			LRS2	cal							Yes
virus0000032_01	dark	23:49	360			VIRUS	cal							Yes
lrs20000032_02	dark	23:55	360			LRS2	cal							Yes
virus0000032_02	dark	23:56	360			VIRUS	cal							Yes

Previous Day:		May 13, 2026 Civil		Next Day:
HET Night Report	VIRUS Biases	VIRUS Biases	LRS2 Biases	HET Night Report	VIRUS Biases
LRS2 Biases	EON Charts	EON Charts		LRS2 Biases	EON Charts