HET Night Report Reader

Civil Date	Ephemerides
2026-05-31	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	02:01	02:54	03:29	10:18	10:53	11:46	02:45	-
Night Length	6:49		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
Zach Vanderbosch	Justen Pautzke	-	-

Overlaps		none

Other Personnel	Joshua Scally

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
05:57	19.0	18.7	10:49	twilight	04:52
Total Time Open					4:52

Program	Night Priority	Science
03:29	Idle due to weather (Radar, clouds)
07:15	Science
07:24	Idle due to weather (Poor IQ)
08:05	Science
08:41	Engineering (hpf)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
05:57	06:34	0.43	0.65	-415	1983	19.1	18.8	18.8	170	14	First of Night
10:37	10:46	0.48	0.72	-750	1983	19.5	19.1	19.0	188	20	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6668	05:00-05:00	00:00	Segment 6:2 sensors acting up.	Called: JS JS came up and covered the segment as well as adjusted some sensors.

Ops Comments	none

TO Comments	Radar and clouds cleared off part way thru the night. No major issues.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	Dark	00:01	319.5			HPF	cal							Yes
0002	Quartz FCU	00:08	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	00:13	74.5			HPF	cal							Yes
0006	Quartz FCU	00:15	74.5			HPF	cal							Yes
0007	Quartz FCU	00:17	74.5			HPF	cal							Yes
0008	Quartz FCU	00:18	74.5			HPF	cal							Yes
0009	Alpha Bright Cal	00:21	85.2			HPF	cal							Yes
0010	Alpha Bright Cal	00:23	85.2			HPF	cal							Yes
0011	Alpha Bright Cal	00:25	85.2			HPF	cal							Yes
0012	Alpha Bright Cal	00:27	85.2			HPF	cal							Yes
0013	LFC FCU	00:29	106.5			HPF	cal							Yes
0014	LFC FCU	00:31	106.5			HPF	cal							Yes
0015	LFC Cal	00:34	106.5			HPF	cal							Yes
0016	LFC Cal	00:37	106.5			HPF	cal							Yes
0017	Etalon Cal	00:39	159.8			HPF	cal							Yes
0018	UNe Slave Cal	00:43	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:45	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:46	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:48	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:49	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:50	15			LRS2	cal							Yes
0019	UNe Slave Cal	00:51	426			HPF	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:51	20			LRS2	cal							Yes
lrs20000002_02	flat_ldls_long_B	00:53	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	00:54	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	00:55	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	00:57	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	00:58	29			LRS2	cal							Yes
0020	UNe Slave Cal	00:59	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	01:00	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	01:01	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	01:02	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	01:03	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	01:05	20			LRS2	cal							Yes
0021	UNe Slave Cal	01:06	426			HPF	cal							Yes
lrs20000005_03	Hg_R	01:06	20			LRS2	cal							Yes
lrs20000006_01	Hg_B	01:07	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	01:09	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	01:10	15			LRS2	cal							Yes
0022	UNe Slave Cal	01:14	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	01:16	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	01:18	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	01:19	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	01:21	15			VIRUS	cal							Yes
0023	UNe Slave Cal	01:22	426			HPF	cal							Yes
virus0000002_02	Cd-A	01:22	15			VIRUS	cal							Yes
virus0000002_03	Cd-A	01:23	15			VIRUS	cal							Yes
virus0000003_01	Hg	01:25	15			VIRUS	cal							Yes
virus0000003_02	Hg	01:26	15			VIRUS	cal							Yes
virus0000003_03	Hg	01:28	15			VIRUS	cal							Yes
lrs20000007_01	dark	01:29	360			LRS2	cal							Yes
virus0000004_01	dark	01:29	360			VIRUS	cal							Yes
lrs20000007_02	dark	01:36	360			LRS2	cal							Yes
virus0000004_02	dark	01:36	360			VIRUS	cal							Yes
lrs20000007_03	dark	01:42	360			LRS2	cal							Yes
virus0000004_03	dark	01:43	360			VIRUS	cal							Yes
lrs20000008_01	bias	02:46	0			LRS2	cal							Yes
virus0000005_01	bias	02:46	0			VIRUS	cal							Yes
lrs20000008_02	bias	02:46	0			LRS2	cal							Yes
virus0000005_02	bias	02:47	0			VIRUS	cal							Yes
lrs20000008_03	bias	02:47	0			LRS2	cal							Yes
virus0000005_03	bias	02:47	0			VIRUS	cal							Yes
lrs20000008_04	bias	02:48	0			LRS2	cal							Yes
virus0000005_04	bias	02:48	0			VIRUS	cal							Yes
lrs20000008_05	bias	02:49	0			LRS2	cal							Yes
virus0000005_05	bias	02:49	0			VIRUS	cal							Yes
lrs20000008_06	bias	02:50	0			LRS2	cal							Yes
virus0000005_06	bias	02:50	0			VIRUS	cal							Yes
lrs20000008_07	bias	02:51	0			LRS2	cal							Yes
virus0000005_07	bias	02:51	0			VIRUS	cal							Yes
lrs20000008_08	bias	02:52	0			LRS2	cal							Yes
lrs20000008_09	bias	02:52	0			LRS2	cal							Yes
virus0000005_08	bias	02:52	0			VIRUS	cal							Yes
virus0000005_09	bias	02:53	0			VIRUS	cal							Yes
lrs20000008_10	bias	02:53	0			LRS2	cal							Yes
virus0000005_10	bias	02:54	0			VIRUS	cal							Yes
lrs20000008_11	bias	02:54	0			LRS2	cal							Yes
virus0000005_11	bias	02:55	0			VIRUS	cal							Yes
0024	LFC Cal	02:56	106.5			HPF	cal							Yes
0025	LFC Cal	02:58	106.5			HPF	cal							Yes
0026	LFC Cal	03:00	106.5			HPF	cal							Yes
0027	LFC Cal	04:19	106.5			HPF	cal							Yes
0028	LFC Cal	04:22	106.5			HPF	cal							Yes
0029	LFC Cal	04:24	106.5			HPF	cal							Yes
lrs20000009_01	BD+601753_056_E	04:50	30			LRS2	cal						Ne lamp exposure with red light guide, testing shutter open/close times using BIB cam.	Yes
0030	LFC Cal	05:41	106.5			HPF	cal							Yes
0031	LFC Cal	05:44	106.5			HPF	cal							Yes
0032	LFC Cal	05:46	106.5			HPF	cal							Yes
0033	HR6025_tell_std	07:22	117.2	7.0		HPF	telluric	2.18		19.07	0.86			Yes
virus0000006_01	parallel	07:29	2000			VIRUS	sci							Yes
0034	QID 676	07:30	969.1	5.8	UT26-2-007	HPF	sci	1.93		19.46	0.82	21	Image quality worse than requested.	No
0035	QID 676	07:47	969.1	0.8	UT26-2-007	HPF	sci	1.96		19.38	0.87	22		No
0036	LFC Cal	08:14	106.5			HPF	cal							Yes
lrs20000010_01	QID 329	08:14	180	9.0	UT26-2-017	LRS2-B	sci	2.14		18.86	0.89			P4
0037	LFC Cal	08:21	106.5			HPF	cal							Yes
virus0000007_01	parallel	08:21	360			VIRUS	sci							Yes
lrs20000011_01	QID 330	08:21	360	4.0	UT26-2-017	LRS2-R	sci	2.12		18.96	0.99			P4
0038	LFC Cal	08:23	106.5			HPF	cal							Yes
0039	LFC Cal	08:35	106.5			HPF	cal							Yes
virus0000008_01	parallel	08:35	360			VIRUS	sci							Yes
lrs20000012_01	QID 354	08:35	360	8.0	UT26-2-017	LRS2-R	sci	1.95		18.98	1.05			P4
0040	LFC Cal	08:37	106.5			HPF	cal							Yes
0041	LFC Cal	08:42	106.5			HPF	cal							Yes
virus0000009_01	parallel	08:50	6963			VIRUS	eng							Yes
0042	HD_185144	08:51	74.5	9.8	ENG26-2-006	HPF	eng	1.98		19.52	0.67	500		Yes
0043	HD_185144	08:53	74.5	0.8	ENG26-2-006	HPF	eng	1.99		19.49	0.68	500		Yes
0044	HD_185144	08:54	74.5	0.8	ENG26-2-006	HPF	eng	1.87		19.48	0.70	554		Yes
0045	HD_185144	08:56	74.5	-0.2	ENG26-2-006	HPF	eng	1.86		19.46	0.71	539		Yes
0046	HD_185144	08:58	74.5	0.8	ENG26-2-006	HPF	eng	1.79		19.45	0.71	559		Yes
0047	HD_185144	09:00	74.5	0.8	ENG26-2-006	HPF	eng	1.97		19.45	0.72	511		Yes
0048	HD_185144	09:02	74.5	0.8	ENG26-2-006	HPF	eng	1.83		19.44	0.73	545		Yes
0049	HD_185144	09:03	74.5	0.8	ENG26-2-006	HPF	eng	1.81		19.42	0.75	564		Yes
0050	HD_185144	09:05	74.5	-0.2	ENG26-2-006	HPF	eng	1.85		19.41	0.75	590		Yes
0051	HD_185144	09:07	74.5	0.8	ENG26-2-006	HPF	eng	1.80		19.40	0.76	613		Yes
0052	HD_185144	09:09	74.5	0.8	ENG26-2-006	HPF	eng	1.81		19.38	0.77	605		Yes
0053	HD_185144	09:10	74.5	0.8	ENG26-2-006	HPF	eng	1.70		19.38	0.78	651		Yes
0054	HD_185144	09:12	74.5	-0.2	ENG26-2-006	HPF	eng	1.65		19.38	0.80	664		Yes
0055	HD_185144	09:14	74.5	0.8	ENG26-2-006	HPF	eng	1.69		19.36	0.81	652		Yes
0056	HD_185144	09:16	74.5	0.8	ENG26-2-006	HPF	eng	1.69		19.34	0.82	696		Yes
0057	HD_185144	09:18	74.5	0.8	ENG26-2-006	HPF	eng	1.77		19.33	0.83	649		Yes
0058	HD_185144	09:19	74.5	0.8	ENG26-2-006	HPF	eng	1.83		19.31	0.83	621		Yes
0059	HD_185144	09:21	74.5	-0.2	ENG26-2-006	HPF	eng	2.20		19.28	0.82	498		Yes
0060	HD_185144	09:23	74.5	0.8	ENG26-2-006	HPF	eng	2.09		19.28	0.83	554		Yes
0061	HD_185144	09:25	74.5	0.8	ENG26-2-006	HPF	eng	1.99		19.28	0.85	566		Yes
0062	HD_185144	09:26	74.5	0.8	ENG26-2-006	HPF	eng	1.89		19.27	0.87	614		Yes
0063	HD_185144	09:28	74.5	-0.2	ENG26-2-006	HPF	eng	1.87		19.27	0.88	598		Yes
0064	HD_185144	09:30	74.5	0.8	ENG26-2-006	HPF	eng	1.84		19.26	0.88	616		Yes
0065	HD_185144	09:32	74.5	0.8	ENG26-2-006	HPF	eng	1.86		19.25	0.89	621		Yes
0066	HD_185144	09:34	74.5	0.8	ENG26-2-006	HPF	eng	2.19		19.24	0.86	557		Yes
0067	HD_185144	09:35	74.5	0.8	ENG26-2-006	HPF	eng	2.24		19.23	0.84	563		Yes
0068	HD_185144	09:37	74.5	-0.2	ENG26-2-006	HPF	eng	2.33		19.23	0.84	530		Yes
0069	HD_185144	09:39	74.5	0.8	ENG26-2-006	HPF	eng	2.46		19.23	0.85	514		Yes
0070	HD_185144	09:41	74.5	0.8	ENG26-2-006	HPF	eng	2.23		19.24	0.85	535		Yes
0071	HD_185144	09:42	74.5	0.8	ENG26-2-006	HPF	eng	2.42		19.23	0.85	528		Yes
0072	HD_185144	09:44	74.5	-0.2	ENG26-2-006	HPF	eng	2.44		19.24	0.85	516		Yes
0073	HD_185144	09:46	74.5	0.8	ENG26-2-006	HPF	eng	2.34		19.23	0.84	540		Yes
0074	HD_185144	09:48	74.5	0.8	ENG26-2-006	HPF	eng	2.27		19.23	0.86	560		Yes
0075	HD_185144	09:50	74.5	0.8	ENG26-2-006	HPF	eng	2.22		19.23	0.87	556		Yes
0076	HD_185144	09:51	74.5	0.8	ENG26-2-006	HPF	eng	2.16		19.23	0.87	587		Yes
0077	HD_185144	09:53	74.5	-0.2	ENG26-2-006	HPF	eng	2.08		19.23	0.86	571		Yes
0078	HD_185144	09:55	74.5	0.8	ENG26-2-006	HPF	eng	2.09		19.23	0.89	592		Yes
0079	HD_185144	09:57	74.5	0.8	ENG26-2-006	HPF	eng	2.08		19.24	0.88	600		Yes
0080	HD_185144	09:58	74.5	0.8	ENG26-2-006	HPF	eng	2.08		19.25	0.88	579		Yes
0081	HD_185144	10:00	74.5	-0.2	ENG26-2-006	HPF	eng	2.07		19.25	0.89	588		Yes
0082	HD_185144	10:02	74.5	0.8	ENG26-2-006	HPF	eng	2.02		19.25	0.89	578		Yes
0083	HD_185144	10:04	74.5	0.8	ENG26-2-006	HPF	eng	2.09		19.25	0.88	577		Yes
0084	HD_185144	10:06	74.5	0.8	ENG26-2-006	HPF	eng	2.05		19.25	0.90	574		Yes
0085	HD_185144	10:07	74.5	0.8	ENG26-2-006	HPF	eng	2.00		19.25	0.90	584		Yes
0086	HD_185144	10:09	74.5	-0.2	ENG26-2-006	HPF	eng	1.97		19.24	0.90	554		Yes
0087	HD_185144	10:11	74.5	0.8	ENG26-2-006	HPF	eng	2.16		19.23	0.92	526		Yes
0088	HD_185144	10:13	74.5	0.8	ENG26-2-006	HPF	eng	2.11		19.21	0.92	520		Yes
0089	HD_185144	10:14	74.5	0.8	ENG26-2-006	HPF	eng	2.12		19.21	0.92	505		Yes
0090	HD_185144	10:16	74.5	-0.2	ENG26-2-006	HPF	eng	2.13		19.22	0.91	500		Yes
0091	HD_185144	10:18	74.5	0.8	ENG26-2-006	HPF	eng	2.18		19.21	0.93	502		Yes
0092	HD_185144	10:20	74.5	0.8	ENG26-2-006	HPF	eng	1.99		19.19	0.95	557		Yes
0093	HD_185144	10:22	74.5	0.8	ENG26-2-006	HPF	eng	1.99		19.19	0.96	549		Yes
0094	HD_185144	10:23	74.5	0.8	ENG26-2-006	HPF	eng	1.98		19.18	0.94	496		Yes
0095	HD_185144	10:25	74.5	-0.2	ENG26-2-006	HPF	eng	1.84		19.17	0.94	583		Yes
0096	HD_185144	10:27	74.5	0.8	ENG26-2-006	HPF	eng	1.85		19.15	0.99	569		Yes
0097	HD_185144	10:29	74.5	0.8	ENG26-2-006	HPF	eng	1.89		19.14	0.99	554		Yes
0098	HD_185144	10:30	74.5	0.8	ENG26-2-006	HPF	eng	1.87		19.12	0.99	549		Yes
0099	HD_185144	10:32	74.5	-0.2	ENG26-2-006	HPF	eng	1.68		19.11	1.02	662		Yes
0100	HD_185144	10:34	74.5	0.8	ENG26-2-006	HPF	eng	1.62		19.10	1.03	610		Yes
0101	HD_185144	10:36	74.5	0.8	ENG26-2-006	HPF	eng	1.63		19.07	1.04	634		Yes
0102	LFC Cal	10:38	106.5			HPF	cal							Yes
lrs20000013_01	bias	10:42	0			LRS2	cal							Yes
virus0000010_01	bias	10:43	0			VIRUS	cal							Yes
virus0000011_01	Cd-A	10:46	15		ENG26-2-002	VIRUS	cal							Yes
virus0000012_01	Hg	10:48	15		ENG26-2-002	VIRUS	cal							Yes
0103	Dark	10:55	319.5			HPF	cal							Yes
0104	Quartz FCU	11:06	74.5			HPF	cal							Yes
0105	Quartz FCU	11:08	74.5			HPF	cal							Yes
0106	Quartz FCU	11:10	74.5			HPF	cal							Yes
0107	Quartz FCU	11:12	74.5			HPF	cal							Yes
0108	Quartz FCU	11:14	74.5			HPF	cal							Yes
0109	Quartz FCU	11:15	74.5			HPF	cal							Yes
0110	Quartz FCU	11:17	74.5			HPF	cal							Yes
0111	Alpha Bright Cal	11:19	85.2			HPF	cal							Yes
0112	Alpha Bright Cal	11:21	85.2			HPF	cal							Yes
0113	Alpha Bright Cal	11:23	85.2			HPF	cal							Yes
0114	Alpha Bright Cal	11:25	85.2			HPF	cal							Yes
0115	LFC FCU	11:28	106.5			HPF	cal							Yes
0116	LFC FCU	11:30	106.5			HPF	cal							Yes
0117	LFC FCU	11:33	106.5			HPF	cal							Yes
0118	LFC FCU	11:35	106.5			HPF	cal							Yes
0119	LFC FCU	11:37	106.5			HPF	cal							Yes
0120	LFC FCU	11:40	106.5			HPF	cal							Yes
0121	LFC Cal	11:43	106.5			HPF	cal							Yes
0122	LFC Cal	11:45	106.5			HPF	cal							Yes
0123	Etalon Cal	11:53	159.8			HPF	cal							Yes
0124	Etalon Cal	11:56	159.8			HPF	cal							Yes
0125	Etalon Cal	11:59	159.8			HPF	cal							Yes
0126	Etalon Cal	12:02	159.8			HPF	cal							Yes
0127	UNe Slave Cal	12:06	426			HPF	cal							Yes
0128	UNe Slave Cal	12:13	426			HPF	cal							Yes
0129	UNe Slave Cal	12:21	426			HPF	cal							Yes
0130	UNe Slave Cal	12:29	426			HPF	cal							Yes
0131	UNe Slave Cal	12:37	426			HPF	cal							Yes
0132	UNe Slave Cal	12:45	426			HPF	cal							Yes
lrs20009909_01	bias	23:51	0			LRS2	cal							Yes
0105	LFC Cal	23:52	106.5			HPF	cal							Yes
virus0009900_01	flat_Qth	23:52	20			VIRUS	cal							Yes
virus0009901_01	bias	23:53	0			VIRUS	cal							Yes
lrs20009910_01	flat_ldls_long_B	23:54	20			LRS2	cal							Yes
virus0009902_01	dark	23:55	15			VIRUS	cal							Yes
lrs20009911_01	Cd-A_B	23:56	29			LRS2	cal							Yes
lrs20009912_01	FeAr_R	23:58	15			LRS2	cal							Yes
lrs20009913_01	Hg_B	23:59	15			LRS2	cal							Yes

Previous Day:		May 31, 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