HET Night Report Reader

Civil Date	Ephemerides
2026-03-26	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:18	02:03	02:32	11:30	11:58	12:44	-	09:33
Night Length	8:58		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
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
01:21	22.5	21.2	11:47	twilight	10:26
Total Time Open					10:26

Program	Night Priority	Science
02:32	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:46	02:34	0.75	1.39	100	-7866	24.3	21.7	21.6	262	11	First of Night
05:11	05:49					22.5	22.4	22.6	248	6	Stack/Re-stack
08:33	08:55					20.9	21.5	21.8	297	22	Stack/Re-stack

Problem Reports
PR Number	Times	Time Lost	Description	Response
6660	02:32-11:30	08:58	Event Monitor light on TCS GUI Dash Board alternating between green and black all night

TO Comments	Cold front blew in lots of dust at EON.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000022_06	bias	00:00	0			LRS2	cal							Yes
virus0000030_06	bias	00:00	0			VIRUS	cal							Yes
lrs20000022_07	bias	00:01	0			LRS2	cal							Yes
virus0000030_07	bias	00:01	0			VIRUS	cal							Yes
lrs20000022_08	bias	00:02	0			LRS2	cal							Yes
virus0000030_08	bias	00:02	0			VIRUS	cal							Yes
lrs20000022_09	bias	00:02	0			LRS2	cal							Yes
virus0000030_09	bias	00:03	0			VIRUS	cal							Yes
lrs20000022_10	bias	00:03	0			LRS2	cal							Yes
virus0000030_10	bias	00:04	0			VIRUS	cal							Yes
lrs20000022_11	bias	00:04	0			LRS2	cal							Yes
virus0000030_11	bias	00:04	0			VIRUS	cal							Yes
lrs20000023_01	dark	00:05	360			LRS2	cal							Yes
virus0000031_01	dark	00:05	360			VIRUS	cal							Yes
lrs20000023_02	dark	00:12	360			LRS2	cal							Yes
virus0000031_02	dark	00:12	360			VIRUS	cal							Yes
lrs20000023_03	dark	00:19	360			LRS2	cal							Yes
virus0000031_03	dark	00:19	360			VIRUS	cal							Yes
lrs20000001_01	skyflat	01:23	7			LRS2	cal							Yes
lrs20000002_01	skyflat	01:24	10			LRS2	cal							Yes
lrs20000003_01	skyflat	01:25	13			LRS2	cal							Yes
lrs20000004_01	skyflat	01:26	16			LRS2	cal							Yes
lrs20000005_01	skyflat	01:27	22			LRS2	cal							Yes
lrs20000006_01	skyflat	01:29	30			LRS2	cal							Yes
virus0000001_01	skyflat	01:31	7			VIRUS	cal							Yes
virus0000002_01	skyflat	01:33	10			VIRUS	cal							Yes
virus0000003_01	skyflat	01:34	14			VIRUS	cal							Yes
virus0000004_01	skyflat	01:35	18			VIRUS	cal							Yes
virus0000005_01	skyflat	01:37	26			VIRUS	cal							Yes
virus0000006_01	parallel	02:39	583			VIRUS	sci							Yes
0001	parallel	02:40	532.5	6.1	UT26-1-014	HPF	sci	1.45		19.48	0.79	486		P4
0002	LFC Cal	02:50	106.5			HPF	cal							Yes
0003	parallel	02:54	969.1	5.8	PSU26-1-019	HPF	sci	1.44	0.73	19.77	0.75	221		P4
virus0000007_01	parallel	02:54	2047			VIRUS	sci							Yes
0004	parallel	03:12	969.1	0.8	PSU26-1-019	HPF	sci	1.30	0.74	19.73	0.78	225		P4
0005	LFC Cal	03:29	106.5			HPF	cal							Yes
0006	HR2398_tell_std	03:36	117.2	8.0		HPF	telluric	1.83	1.12	18.19	0.91			Yes
virus0000008_01	parallel	03:44	2337			VIRUS	sci							Yes
0007	parallel	03:45	245	6.9	UT26-1-010	HPF	sci	1.92	0.94	17.71	0.94	243		P4
0008	parallel	03:50	245	0.9	UT26-1-010	HPF	sci	1.64	0.67	17.89	0.94	332		P4
0009	parallel	03:54	245	-0.1	UT26-1-010	HPF	sci	1.63	0.94	18.01	0.92	357		P4
0010	parallel	03:59	245	0.9	UT26-1-010	HPF	sci	1.64	0.95	18.12	0.91	360		P4
0011	parallel	04:04	245	0.9	UT26-1-010	HPF	sci	1.52	0.78	18.27	0.91	396		P4
0012	parallel	04:08	245	-0.1	UT26-1-010	HPF	sci	1.51	0.70	18.37	0.92	413		P4
0013	parallel	04:13	245	0.9	UT26-1-010	HPF	sci	1.45	0.70	18.42	0.92	431		P4
0014	parallel	04:18	245	0.9	UT26-1-010	HPF	sci	1.45	0.76	18.42	0.92	425		P4
0015	LFC Cal	04:23	106.5			HPF	cal							Yes
0016	parallel	04:29	308.9	7.9	UT26-1-009	HPF	sci	1.52	0.65	19.72	0.97	310		Yes
virus0000009_01	parallel	04:29	1417			VIRUS	sci							Yes
0017	parallel	04:35	308.9	-0.1	UT26-1-009	HPF	sci	1.52	0.66	19.73	0.99	312		Yes
0018	parallel	04:41	308.9	0.9	UT26-1-009	HPF	sci	1.46	0.69	19.74	0.99	348		Yes
0019	parallel	04:47	308.9	0.9	UT26-1-009	HPF	sci	1.55	0.72	19.76	0.97	346		Yes
0020	LFC Cal	04:59	106.5			HPF	cal							Yes
lrs20000007_01	parallel	04:59	180	7.0	UT26-1-016	LRS2-B	sci	1.44	0.81	19.33	0.91			P4
0021	LFC Cal	05:05	106.5			HPF	cal							Yes
virus0000010_01	parallel	05:05	360			VIRUS	sci							Yes
lrs20000008_01	parallel	05:05	360	3.0	UT26-1-016	LRS2-R	sci	1.38	0.92	19.08	1.06			P4
0022	LFC Cal	05:08	106.5			HPF	cal							Yes
0023	parallel	05:55	308.9	6.9	UT26-1-007	HPF	sci	1.37		17.82	0.83	106		P4
virus0000011_01	parallel	05:55	1060			VIRUS	sci							Yes
0024	parallel	06:01	308.9	-0.1	UT26-1-007	HPF	sci	1.31		17.73	0.82	99		P4
0025	parallel	06:07	308.9	0.9	UT26-1-007	HPF	sci	1.25		17.66	0.74	93		P4
lrs20000009_01	BD+262606_056_E	06:19	60	7.0		LRS2	spec	1.50		20.33	0.57			Yes
lrs20000010_01	BD+262606_066_E	06:22	30	2.5		LRS2	spec	1.67		20.15	0.67			Yes
virus0000012_01	parallel	06:29	1321			VIRUS	sci							Yes
0026	parallel	06:30	617.7	6.7	UT26-1-009	HPF	sci	1.47		19.93	0.96	140		P4
0027	parallel	06:41	617.7	0.7	UT26-1-009	HPF	sci	1.62		19.93	0.92	116		P4
virus0000013_01	parallel	07:01	1023			VIRUS	sci							Yes
0028	parallel	07:02	969.1	10.8	UT26-1-014	HPF	sci	1.28		18.90	0.94	342		P4
0029	LFC Cal	07:19	106.5			HPF	cal							Yes
0030	LFC Cal	07:24	106.5			HPF	cal							Yes
virus0000014_01	parallel	07:24	1500			VIRUS	sci							Yes
lrs20000011_01	parallel	07:24	1500	6.0	PSU26-1-013	LRS2-B	sci	1.74	0.82	20.19	0.92			P4
0031	LFC Cal	07:26	106.5			HPF	cal							Yes
0032	LFC Cal	07:29	106.5			HPF	cal							Yes
0033	parallel	07:57	330.2	8.5	UT26-1-010	HPF	sci	1.32	0.74	19.70	0.77	449		P4
virus0000015_01	parallel	07:57	2203			VIRUS	sci							Yes
0034	parallel	08:03	330.2	0.5	UT26-1-010	HPF	sci	1.24	0.74	19.71	0.78	507		P4
0035	parallel	08:09	330.2	0.5	UT26-1-010	HPF	sci	1.22	0.85	19.67	0.78	515		P4
0036	parallel	08:15	330.2	0.5	UT26-1-010	HPF	sci	1.26	0.79	19.60	0.78	486		P4
0037	parallel	08:22	330.2	0.5	UT26-1-010	HPF	sci	1.24	0.85	19.50	0.78	468		P4
0038	parallel	08:28	330.2	0.5	UT26-1-010	HPF	sci	1.21	0.86	19.49	0.75	426		P4
0039	LFC Cal	08:35	106.5			HPF	cal							Yes
0040	parallel	09:00	42.6	5.3	UT26-1-014	HPF	sci	1.47	0.83	19.79	1.05	605		P4
0041	LFC Cal	09:02	106.5			HPF	cal							Yes
virus0000016_01	parallel	09:14	2047			VIRUS	sci							Yes
0042	parallel	09:15	969.1	13.8	UT26-1-010	HPF	sci	1.27	0.79	19.76	1.01	165		P4
0043	parallel	09:32	969.1	0.8	UT26-1-010	HPF	sci	1.31	0.83	19.93	0.98	180		P4
0044	LFC Cal	09:50	106.5			HPF	cal							Yes
0045	LFC Cal	09:52	106.5			HPF	cal							Yes
virus0000017_01	parallel	09:55	1959			VIRUS	sci							Yes
0046	parallel	09:56	915.9	7.7	G26-1-002	HPF	sci	1.25	1.11	20.27	0.94	52		Yes
0047	parallel	10:12	915.9	0.7	G26-1-002	HPF	sci	1.57	1.38	20.24	0.89	39		Yes
0048	LFC Cal	10:29	106.5			HPF	cal							Yes
virus0000018_01	parallel	10:33	600			VIRUS	sci							Yes
0049	LFC Cal	10:34	106.5			HPF	cal							Yes
lrs20000012_01	parallel	10:34	600	7.0	UT26-1-016	LRS2-R	sci	1.62	1.03	20.75	0.90			P4
0050	LFC Cal	10:36	106.5			HPF	cal							Yes
0051	LFC Cal	10:38	106.5			HPF	cal							Yes
0052	LFC Cal	10:48	106.5			HPF	cal							Yes
virus0000019_01	parallel	10:48	300			VIRUS	sci							Yes
lrs20000013_01	parallel	10:48	300	4.0	UT26-1-016	LRS2-B	sci	1.67	1.13	21.82	0.84			P4
0053	LFC Cal	10:51	106.5			HPF	cal							Yes
lrs20000014_01	parallel	10:57	180	4.0	UT26-1-016	LRS2-B	sci	1.82	1.23	21.84	0.82			P4
0054	LFC Cal	10:58	106.5			HPF	cal							Yes
virus0000020_01	parallel	11:03	360			VIRUS	sci							Yes
0055	LFC Cal	11:04	106.5			HPF	cal							Yes
lrs20000015_01	parallel	11:04	360	4.0	UT26-1-016	LRS2-R	sci	1.70	1.34	20.73	0.93			P4
0056	LFC Cal	11:06	106.5			HPF	cal							Yes
0057	parallel	11:16	969.1	6.8	UT26-1-014	HPF	sci	2.00	1.36	19.98	0.95	291		Yes
virus0000021_01	parallel	11:16	1023			VIRUS	sci							Yes
0058	LFC Cal	11:34	106.5			HPF	cal							Yes
0059	LFC Cal	11:40	106.5			HPF	cal							Yes
virus0000022_01	parallel	11:40	300			VIRUS	sci							Yes
lrs20000016_01	parallel	11:40	300	7.0	PSU26-1-012	LRS2-B	sci	2.87	1.39	21.22	0.83		cold front cased seeing degradation	Yes
0060	LFC Cal	11:43	106.5			HPF	cal							Yes
lrs20000017_01	bias	11:46	0			LRS2	cal							Yes
virus0000023_01	bias	11:47	0			VIRUS	cal							Yes
virus0000024_01	Cd-A	11:50	15		ENG26-1-002	VIRUS	cal							Yes
virus0000025_01	Hg	11:51	15		ENG26-1-002	VIRUS	cal							Yes
0061	Dark	12:01	319.5			HPF	cal							Yes
0062	Quartz FCU	12:13	74.5			HPF	cal							Yes
0063	Quartz FCU	12:14	74.5			HPF	cal							Yes
0064	Quartz FCU	12:16	74.5			HPF	cal							Yes
0065	Quartz FCU	12:18	74.5			HPF	cal							Yes
0066	Quartz FCU	12:20	74.5			HPF	cal							Yes
0067	Quartz FCU	12:21	74.5			HPF	cal							Yes
0068	Quartz FCU	12:23	74.5			HPF	cal							Yes
0069	Alpha Bright Cal	12:26	85.2			HPF	cal							Yes
0070	Alpha Bright Cal	12:27	85.2			HPF	cal							Yes
0071	Alpha Bright Cal	12:29	85.2			HPF	cal							Yes
0072	Alpha Bright Cal	12:31	85.2			HPF	cal							Yes
0073	LFC FCU	12:34	106.5			HPF	cal							Yes
0074	LFC FCU	12:36	106.5			HPF	cal							Yes
0075	LFC FCU	12:39	106.5			HPF	cal							Yes
0076	LFC FCU	12:41	106.5			HPF	cal							Yes
0077	LFC FCU	12:43	106.5			HPF	cal							Yes
0078	LFC FCU	12:46	106.5			HPF	cal							Yes
0079	LFC Cal	12:49	106.5			HPF	cal							Yes
0080	LFC Cal	12:51	106.5			HPF	cal							Yes
0081	Etalon Cal	12:59	159.8			HPF	cal							Yes
0082	Etalon Cal	13:02	159.8			HPF	cal							Yes
0083	Etalon Cal	13:05	159.8			HPF	cal							Yes
0084	Etalon Cal	13:08	159.8			HPF	cal							Yes
0085	UNe Slave Cal	13:12	426			HPF	cal							Yes
0086	UNe Slave Cal	13:19	426			HPF	cal							Yes
0087	UNe Slave Cal	13:27	426			HPF	cal							Yes
0088	UNe Slave Cal	13:35	426			HPF	cal							Yes
0089	UNe Slave Cal	13:43	426			HPF	cal							Yes
0090	UNe Slave Cal	13:51	426			HPF	cal							Yes
0094	LFC Cal	21:50	106.5			HPF	cal							Yes
lrs20009900_01	bias	21:59	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:00	20			VIRUS	cal							Yes
virus0009901_01	bias	22:02	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:02	20			LRS2	cal							Yes
virus0009902_01	dark	22:04	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:04	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:06	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:07	15			LRS2	cal							Yes
0095	Dark	22:29	319.5			HPF	cal							Yes
0096	Quartz FCU	22:36	74.5			HPF	cal							Yes
0097	Quartz FCU	22:37	74.5			HPF	cal							Yes
0098	Quartz FCU	22:39	74.5			HPF	cal							Yes
0099	Quartz FCU	22:41	74.5			HPF	cal							Yes
0100	Quartz FCU	22:43	74.5			HPF	cal							Yes
0101	Quartz FCU	22:45	74.5			HPF	cal							Yes
0102	Quartz FCU	22:46	74.5			HPF	cal							Yes
0103	Alpha Bright Cal	22:49	85.2			HPF	cal							Yes
0104	Alpha Bright Cal	22:51	85.2			HPF	cal							Yes
0105	Alpha Bright Cal	22:52	85.2			HPF	cal							Yes
0106	Alpha Bright Cal	22:54	85.2			HPF	cal							Yes
0107	LFC FCU	22:57	106.5			HPF	cal							Yes
0108	LFC FCU	22:59	106.5			HPF	cal							Yes
0109	LFC Cal	23:02	106.5			HPF	cal							Yes
0110	LFC Cal	23:05	106.5			HPF	cal							Yes
0111	Etalon Cal	23:07	159.8			HPF	cal							Yes
0112	UNe Slave Cal	23:11	426			HPF	cal							Yes
lrs20000016_01	flat_Qth_R	23:12	15			LRS2	cal							Yes
lrs20000016_02	flat_Qth_R	23:13	15			LRS2	cal							Yes
lrs20000016_03	flat_Qth_R	23:15	15			LRS2	cal							Yes
lrs20000016_04	flat_Qth_R	23:16	15			LRS2	cal							Yes
lrs20000016_05	flat_Qth_R	23:17	15			LRS2	cal							Yes
lrs20000017_01	flat_ldls_long_B	23:18	20			LRS2	cal							Yes
0113	UNe Slave Cal	23:19	426			HPF	cal							Yes
lrs20000017_02	flat_ldls_long_B	23:20	20			LRS2	cal							Yes
lrs20000017_03	flat_ldls_long_B	23:21	20			LRS2	cal							Yes
lrs20000018_01	Cd-A_B	23:22	29			LRS2	cal							Yes
lrs20000018_02	Cd-A_B	23:24	29			LRS2	cal							Yes
lrs20000018_03	Cd-A_B	23:25	29			LRS2	cal							Yes
0114	UNe Slave Cal	23:26	426			HPF	cal							Yes
lrs20000019_01	FeAr_R	23:27	15			LRS2	cal							Yes
lrs20000019_02	FeAr_R	23:28	15			LRS2	cal							Yes
lrs20000019_03	FeAr_R	23:29	15			LRS2	cal							Yes
lrs20000020_01	Hg_R	23:30	20			LRS2	cal							Yes
lrs20000020_02	Hg_R	23:32	20			LRS2	cal							Yes
lrs20000020_03	Hg_R	23:33	20			LRS2	cal							Yes
0115	UNe Slave Cal	23:34	426			HPF	cal							Yes
lrs20000021_01	Hg_B	23:34	15			LRS2	cal							Yes
lrs20000021_02	Hg_B	23:35	15			LRS2	cal							Yes
lrs20000021_03	Hg_B	23:37	15			LRS2	cal							Yes
0116	UNe Slave Cal	23:42	426			HPF	cal							Yes
virus0000027_01	flat_ldls_long	23:43	15			VIRUS	cal							Yes
virus0000027_02	flat_ldls_long	23:45	15			VIRUS	cal							Yes
virus0000027_03	flat_ldls_long	23:46	15			VIRUS	cal							Yes
virus0000028_01	Cd-A	23:47	15			VIRUS	cal							Yes
virus0000028_02	Cd-A	23:49	15			VIRUS	cal							Yes
0117	UNe Slave Cal	23:50	426			HPF	cal							Yes
virus0000028_03	Cd-A	23:50	15			VIRUS	cal							Yes
virus0000029_01	Hg	23:52	15			VIRUS	cal							Yes
virus0000029_02	Hg	23:53	15			VIRUS	cal							Yes
virus0000029_03	Hg	23:54	15			VIRUS	cal							Yes
lrs20000022_01	bias	23:56	0			LRS2	cal							Yes
virus0000030_01	bias	23:56	0			VIRUS	cal							Yes
lrs20000022_02	bias	23:56	0			LRS2	cal							Yes
virus0000030_02	bias	23:57	0			VIRUS	cal							Yes
lrs20000022_03	bias	23:57	0			LRS2	cal							Yes
virus0000030_03	bias	23:58	0			VIRUS	cal							Yes
lrs20000022_04	bias	23:58	0			LRS2	cal							Yes
virus0000030_04	bias	23:58	0			VIRUS	cal							Yes
lrs20000022_05	bias	23:59	0			LRS2	cal							Yes
virus0000030_05	bias	23:59	0			VIRUS	cal							Yes