HET Night Report Reader

Civil Date	Ephemerides
2026-09-05	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:21	02:06	02:36	11:13	11:42	12:29	07:34	-
Night Length	8:37		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
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
03:54	22.5	21.6	12:22	twilight	08:28
Total Time Open					8:28

Program	Night Priority	Science
02:36	Idle due to weather (radar)
04:26	Science
04:46	Idle due to weather (queue hole)
05:33	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
04:00	04:25	0.37	0.57	-410	+890	22.4	22.0	21.9	135	6	First of Night
11:39	11:45	1.17	1.68	-460	+2246	19.3	19.6	19.6	220	4	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6715	12:20-12:25	00:05	autotwi not taking correctly morning LRS2

Ops Comments	none

TO Comments	Going by CCAM footage, a bright light source -- likely the AHU south heat lamp -- turned on at 10:43 local time and turned off at 10:51 local time. This likely coincided with lowering the chiller setpoint and then turning off the override. Stormy weather at start of night which cleared up.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	LFC FCU	00:01	106.5			HPF	cal							Yes
0002	LFC Cal	00:04	106.5			HPF	cal							Yes
0003	LFC Cal	00:06	106.5			HPF	cal							Yes
0004	Etalon Cal	00:09	159.8			HPF	cal							Yes
0005	UNe Slave Cal	00:12	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:14	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:15	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:17	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:18	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:19	15			LRS2	cal							Yes
0006	UNe Slave Cal	00:20	426			HPF	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:20	20			LRS2	cal							Yes
lrs20000002_02	flat_ldls_long_B	00:22	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	00:23	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	00:24	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	00:26	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	00:27	29			LRS2	cal							Yes
0007	UNe Slave Cal	00:28	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	00:29	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	00:30	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	00:31	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	00:33	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	00:34	20			LRS2	cal							Yes
lrs20000005_03	Hg_R	00:35	20			LRS2	cal							Yes
0008	UNe Slave Cal	00:36	426			HPF	cal							Yes
lrs20000006_01	Hg_B	00:37	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	00:38	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	00:39	15			LRS2	cal							Yes
0009	UNe Slave Cal	00:43	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	00:46	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	00:47	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	00:49	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	00:50	15			VIRUS	cal							Yes
0010	UNe Slave Cal	00:51	426			HPF	cal							Yes
virus0000002_02	Cd-A	00:52	15			VIRUS	cal							Yes
virus0000002_03	Cd-A	00:53	15			VIRUS	cal							Yes
virus0000003_01	Hg	00:55	15			VIRUS	cal							Yes
virus0000003_02	Hg	00:56	15			VIRUS	cal							Yes
virus0000003_03	Hg	00:57	15			VIRUS	cal							Yes
lrs20000007_01	bias	00:59	0			LRS2	cal							Yes
virus0000004_01	bias	00:59	0			VIRUS	cal							Yes
lrs20000007_02	bias	01:00	0			LRS2	cal							Yes
virus0000004_02	bias	01:00	0			VIRUS	cal							Yes
lrs20000007_03	bias	01:00	0			LRS2	cal							Yes
virus0000004_03	bias	01:01	0			VIRUS	cal							Yes
lrs20000007_04	bias	01:01	0			LRS2	cal							Yes
virus0000004_04	bias	01:02	0			VIRUS	cal							Yes
lrs20000007_05	bias	01:02	0			LRS2	cal							Yes
virus0000004_05	bias	01:02	0			VIRUS	cal							Yes
lrs20000007_06	bias	01:03	0			LRS2	cal							Yes
virus0000004_06	bias	01:03	0			VIRUS	cal							Yes
lrs20000007_07	bias	01:04	0			LRS2	cal							Yes
virus0000004_07	bias	01:04	0			VIRUS	cal							Yes
lrs20000007_08	bias	01:05	0			LRS2	cal							Yes
virus0000004_08	bias	01:05	0			VIRUS	cal							Yes
lrs20000007_09	bias	01:06	0			LRS2	cal							Yes
virus0000004_09	bias	01:06	0			VIRUS	cal							Yes
lrs20000007_10	bias	01:06	0			LRS2	cal							Yes
virus0000004_10	bias	01:07	0			VIRUS	cal							Yes
lrs20000007_11	bias	01:07	0			LRS2	cal							Yes
virus0000004_11	bias	01:08	0			VIRUS	cal							Yes
0011	LFC Cal	01:55	106.5			HPF	cal							Yes
0012	LFC Cal	01:57	106.5			HPF	cal							Yes
0013	LFC Cal	01:59	106.5			HPF	cal							Yes
lrs20000008_01	dark	03:23	360			LRS2	cal							Yes
virus0000005_01	dark	03:23	360			VIRUS	cal							Yes
lrs20000008_02	dark	03:30	360			LRS2	cal							Yes
virus0000005_02	dark	03:30	360			VIRUS	cal							Yes
lrs20000008_03	dark	03:37	360			LRS2	cal							Yes
virus0000005_03	dark	03:37	360			VIRUS	cal							Yes
0014	LFC Cal	03:53	106.5			HPF	cal							Yes
0015	LFC Cal	03:55	106.5			HPF	cal							Yes
0016	LFC Cal	03:57	106.5			HPF	cal							Yes
lrs20000009_01	HD180609_056_W	04:31	30	4.5		LRS2	spec	1.76		22.04	0.70			Yes
lrs20000010_01	HD180609_066_W	04:34	30	3.5		LRS2	spec	1.76		21.10	0.84			Yes
virus0000006_01	WD2341+322_034_E	04:40	60	5.0		VIRUS	spec	1.62		21.97	0.71			Yes
virus0000006_02	WD2341+322_034_E	04:42	60	1.0		VIRUS	spec	1.58		21.93	0.69			Yes
virus0000006_03	WD2341+322_034_E	04:45	60	2.0		VIRUS	spec	1.60		21.95	0.72			Yes
0017	LFC Cal	05:37	106.5			HPF	cal							Yes
lrs20000011_01	parallel	05:37	360			LRS2	sci							Yes
virus0000007_01	QID 844	05:37	360	4.0	UT26-3-014	VIRUS	sci	1.58	1.18	21.78	0.71			Yes
0018	LFC Cal	05:40	106.5			HPF	cal							Yes
lrs20000011_02	parallel	05:44	360			LRS2	sci							Yes
virus0000007_02	QID 844	05:44	360	1.0	UT26-3-014	VIRUS	sci	1.50	1.12	21.77	0.72			Yes
lrs20000011_03	parallel	05:52	360			LRS2	sci							Yes
virus0000007_03	QID 844	05:52	360	2.0	UT26-3-014	VIRUS	sci	1.51	1.22	21.77	0.75			Yes
0019	LFC Cal	06:06	106.5			HPF	cal							Yes
lrs20000012_01	parallel	06:06	360			LRS2	sci							Yes
virus0000008_01	QID 829	06:06	360	8.0	UT26-3-014	VIRUS	sci	1.58	1.31	21.72	0.76			Yes
0020	LFC Cal	06:08	106.5			HPF	cal							Yes
lrs20000012_02	parallel	06:13	360			LRS2	sci							Yes
virus0000008_02	QID 829	06:13	360	1.0	UT26-3-014	VIRUS	sci	1.57	0.99	21.72	0.76			Yes
lrs20000012_03	parallel	06:20	360			LRS2	sci							Yes
virus0000008_03	QID 829	06:20	360	1.0	UT26-3-014	VIRUS	sci	1.53	0.92	21.71	0.77			Yes
0021	LFC Cal	06:31	106.5			HPF	cal							Yes
lrs20000013_01	parallel	06:31	360			LRS2	sci							Yes
virus0000009_01	QID 845	06:31	360	5.0	UT26-3-014	VIRUS	sci	1.60	1.06	21.82	0.78			Yes
0022	LFC Cal	06:34	106.5			HPF	cal							Yes
lrs20000013_02	parallel	06:38	360			LRS2	sci							Yes
virus0000009_02	QID 845	06:38	360	1.0	UT26-3-014	VIRUS	sci	1.60	0.92	21.80	0.78			Yes
lrs20000013_03	parallel	06:45	360			LRS2	sci							Yes
virus0000009_03	QID 845	06:45	360	1.0	UT26-3-014	VIRUS	sci	1.57	0.94	21.78	0.79			Yes
0023	LFC Cal	06:59	106.5			HPF	cal							Yes
virus0000010_01	parallel	06:59	1800			VIRUS	sci							Yes
lrs20000014_01	QID 142	06:59	1800	8.0	UT26-3-013	LRS2-B	sci	1.64	1.08	21.85	0.74			Yes
0024	LFC Cal	07:01	106.5			HPF	cal							Yes
0025	LFC Cal	07:04	106.5			HPF	cal							Yes
0026	LFC Cal	07:34	106.5			HPF	cal							Yes
lrs20000015_01	QID 143	07:34	900	5.0	UT26-3-013	LRS2-R	sci	1.58	1.12	20.67	0.91			Yes
virus0000011_01	parallel	07:34	900			VIRUS	sci							Yes
0027	LFC Cal	07:37	106.5			HPF	cal							Yes
0028	LFC Cal	07:39	106.5			HPF	cal							Yes
0029	LFC Cal	07:55	106.5			HPF	cal							Yes
virus0000012_01	parallel	07:55	900			VIRUS	sci							Yes
lrs20000016_01	QID 18	07:55	900	6.0	PSU26-3-007	LRS2-B	sci	1.47	1.10	21.44	0.61			Yes
0030	LFC Cal	07:57	106.5			HPF	cal							Yes
0031	LFC Cal	07:59	106.5			HPF	cal							Yes
0032	LFC Cal	08:16	106.5			HPF	cal							Yes
lrs20000017_01	QID 1008	08:16	180	6.0	UT26-3-010	LRS2-B	sci	1.40	0.92	21.39	0.78			Yes
0033	QID 784	08:24	649.6	5.2	UT26-3-008	HPF	sci	1.61	1.06	20.13	0.69	337		Yes
virus0000013_01	parallel	08:24	2041.5			VIRUS	sci							Yes
0034	QID 784	08:36	649.6	0.2	UT26-3-008	HPF	sci	1.58	1.07	20.13	0.75	366		Yes
0035	QID 784	08:47	649.6	1.2	UT26-3-008	HPF	sci	1.49	1.18	20.10	0.77	361		Yes
0036	LFC Cal	09:00	106.5			HPF	cal							Yes
0037	QID 787	09:05	713.6	7.1	UT26-3-001	HPF	sci	1.69	1.03	19.87	0.61	48		Yes
virus0000014_01	parallel	09:05	2265.2			VIRUS	sci							Yes
0038	QID 787	09:18	713.6	1.1	UT26-3-001	HPF	sci	1.75	1.21	19.97	0.69	55		Yes
0039	QID 787	09:31	713.6	0.1	UT26-3-001	HPF	sci	1.73	1.18	20.06	0.73	62		Yes
0040	LFC Cal	09:49	106.5			HPF	cal							Yes
virus0000015_01	parallel	09:49	1500			VIRUS	sci							Yes
lrs20000018_01	QID 989	09:49	1500	7.0	PSU26-3-003	LRS2-B	sci	1.74	0.93	20.55	0.67			Yes
0041	LFC Cal	09:52	106.5			HPF	cal							Yes
0042	LFC Cal	09:54	106.5			HPF	cal							Yes
virus0000015_02	parallel	10:15	1500			VIRUS	sci							Yes
lrs20000018_02	QID 989	10:15	1500	1.0	PSU26-3-003	LRS2-B	sci	1.59	1.27	20.49	0.76			Yes
lrs20000019_01	QID 1007	10:48	90	8.5	UT26-3-010	LRS2-B	sci	1.65	0.89	21.09	0.82			Yes
0043	QID 1019	10:56	681.6	6.6	UT26-3-004	HPF	sci	1.36	0.68	20.18	0.78	148		P4
virus0000016_01	parallel	10:56	1446.2			VIRUS	sci							Yes
0044	QID 1019	11:08	681.6	0.6	UT26-3-004	HPF	sci	1.50	0.71	20.20	0.67	135		P4
virus0000017_01	parallel	11:27	574			VIRUS	sci							Yes
0045	QID 935	11:28	532.5	7.1	UT26-3-012	HPF	sci	1.55	0.79	19.45	0.85	388		Yes
0046	LFC Cal	11:38	106.5			HPF	cal							Yes
lrs20000020_01	bias	11:39	0			LRS2	cal							Yes
virus0000018_01	bias	11:40	0			VIRUS	cal							Yes
virus0000019_01	Cd-A	11:41	15		ENG26-3-002	VIRUS	cal							Yes
virus0000020_01	Hg	11:42	15		ENG26-3-002	VIRUS	cal							Yes
virus0000021_01	skyflat	12:08	25			VIRUS	cal							Yes
virus0000022_01	skyflat	12:10	18			VIRUS	cal							Yes
virus0000023_01	skyflat	12:11	15			VIRUS	cal							Yes
virus0000024_01	skyflat	12:18	25			VIRUS	cal							Yes
virus0000025_01	skyflat	12:20	18			VIRUS	cal							Yes
virus0000026_01	skyflat	12:21	15			VIRUS	cal							Yes
0047	Dark	12:27	319.5			HPF	cal							Yes
0048	Quartz FCU	12:39	74.5			HPF	cal							Yes
0049	Quartz FCU	12:41	74.5			HPF	cal							Yes
0050	Quartz FCU	12:42	74.5			HPF	cal							Yes
0051	Quartz FCU	12:44	74.5			HPF	cal							Yes
0052	Quartz FCU	12:46	74.5			HPF	cal							Yes
0053	Quartz FCU	12:48	74.5			HPF	cal							Yes
0054	Quartz FCU	12:49	74.5			HPF	cal							Yes
0055	Alpha Bright Cal	12:52	85.2			HPF	cal							Yes
0056	Alpha Bright Cal	12:54	85.2			HPF	cal							Yes
0057	Alpha Bright Cal	12:56	85.2			HPF	cal							Yes
0058	Alpha Bright Cal	12:58	85.2			HPF	cal							Yes
0059	LFC FCU	13:00	106.5			HPF	cal							Yes
0060	LFC FCU	13:03	106.5			HPF	cal							Yes
0061	LFC FCU	13:05	106.5			HPF	cal							Yes
0062	LFC FCU	13:07	106.5			HPF	cal							Yes
0063	LFC FCU	13:10	106.5			HPF	cal							Yes
0064	LFC FCU	13:12	106.5			HPF	cal							Yes
0065	LFC Cal	13:15	106.5			HPF	cal							Yes
0066	LFC Cal	13:17	106.5			HPF	cal							Yes
0067	Etalon Cal	13:25	159.8			HPF	cal							Yes
0068	Etalon Cal	13:28	159.8			HPF	cal							Yes
0069	Etalon Cal	13:31	159.8			HPF	cal							Yes
0070	Etalon Cal	13:34	159.8			HPF	cal							Yes
0071	UNe Slave Cal	13:38	426			HPF	cal							Yes
0072	UNe Slave Cal	13:46	426			HPF	cal							Yes
0073	UNe Slave Cal	13:53	426			HPF	cal							Yes
0074	UNe Slave Cal	14:01	426			HPF	cal							Yes
0075	UNe Slave Cal	14:09	426			HPF	cal							Yes
0076	UNe Slave Cal	14:17	426			HPF	cal							Yes
0062	LFC Cal	23:07	106.5			HPF	cal							Yes
lrs20009900_01	bias	23:17	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	23:18	20			VIRUS	cal							Yes
virus0009901_01	bias	23:20	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	23:20	20			LRS2	cal							Yes
virus0009902_01	dark	23:22	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	23:23	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	23:24	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	23:26	15			LRS2	cal							Yes
0063	Dark	23:31	319.5			HPF	cal							Yes
0064	Quartz FCU	23:37	74.5			HPF	cal							Yes
0065	Quartz FCU	23:39	74.5			HPF	cal							Yes
0066	Quartz FCU	23:41	74.5			HPF	cal							Yes
0067	Quartz FCU	23:43	74.5			HPF	cal							Yes
0068	Quartz FCU	23:44	74.5			HPF	cal							Yes
0069	Quartz FCU	23:46	74.5			HPF	cal							Yes
0070	Quartz FCU	23:48	74.5			HPF	cal							Yes
0071	Alpha Bright Cal	23:50	85.2			HPF	cal							Yes
0072	Alpha Bright Cal	23:52	85.2			HPF	cal							Yes
0073	Alpha Bright Cal	23:54	85.2			HPF	cal							Yes
0074	Alpha Bright Cal	23:56	85.2			HPF	cal							Yes
0075	LFC FCU	23:59	106.5			HPF	cal							Yes

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