HET Night Report Reader

Civil Date	Ephemerides
2026-04-03	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:23	02:09	02:38	11:19	11:48	12:35	03:11	-
Night Length	8:41		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Zach Vanderbosch	Aiden Dillard Amy Westfall

Overlaps		none

Other Personnel	Chris Robison

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
02:14	18.9	16.5	11:35	twilight	09:21
Total Time Open					9:21

Program	Night Priority	Science
02:38	Science
03:36	Idle due to weather (Waiting for P0 track to start)
03:43	Science
07:08	Idle due to weather (Clouds)
07:20	Science
08:33	Idle due to weather (Downwind condition, clouds, poor IQ)
10:27	Science
10:48	Idle due to weather (Poor IQ, clouds)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:34	03:22	0.94	2.44	80	-5898	17.7	17.2	16.8	310	20	First of Night
09:59	10:27	0.83	1.49	60	-3403	11.1	13.1	13.5	342	21	Stack/Re-stack
11:19	11:35	1.26	3.00	60	-3102	9.9	11.7	12.0	343	21	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6649	03:43-03:43	00:00	HObs Scheduling Targets with Fewer than Requested Exposures but Executing All Requested Exposures	Known problem with iexp, just keeping a close eye on the exposure sequence to manually abort when needed.
6663	01:23-02:14	00:51	Software issue prevents dome from opening	Called: Chris and George
6656	11:26-11:27	00:01	EON Tasks reporting "ENG-002" rather than "ENG26-1-002"	Night report was manually edited to correct program value (ENG26-2-002)

TO Comments	none

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000018_02	dark	00:00	360			LRS2	cal							Yes
virus0000019_02	dark	00:01	360			VIRUS	cal							Yes
lrs20000018_03	dark	00:07	360			LRS2	cal							Yes
virus0000019_03	dark	00:07	360			VIRUS	cal							Yes
0001	LFC Cal	02:26	106.5			HPF	cal							Yes
0002	LFC Cal	02:28	106.5			HPF	cal							Yes
0003	LFC Cal	02:31	106.5			HPF	cal							Yes
0004	QID 155	03:35	42.6	13.3	UT26-2-011	HPF	sci	3.45	1.44	19.53	1.30	346	Purposefully defocused the tracker to avoid saturation, but might have defocused too much. Please check data quality and reject if needed.	Yes
0005	QID 693	03:53	308.9	10.9	UT26-2-004	HPF	sci	1.91	1.11	19.60	1.19	255	Some exposures with image quality >2.5" but S/N still looks decent. Please check data quality and reject if needed.	Yes
virus0000001_01	parallel	03:53	5097			VIRUS	sci							Yes
0006	QID 693	03:59	308.9	-0.1	UT26-2-004	HPF	sci	1.96	1.30	19.69	1.20	270		Yes
0007	QID 693	04:05	308.9	0.9	UT26-2-004	HPF	sci	2.17	1.14	19.74	1.26	276		Yes
0008	QID 693	04:11	308.9	0.9	UT26-2-004	HPF	sci	2.43	1.27	19.74	1.31	266		Yes
0009	QID 693	04:17	308.9	0.9	UT26-2-004	HPF	sci	2.68	1.06	19.75	1.36	252		Yes
0010	QID 693	04:22	308.9	-0.1	UT26-2-004	HPF	sci	3.06	1.27	19.75	1.45	209		Yes
0011	QID 693	04:28	308.9	0.9	UT26-2-004	HPF	sci	3.02	1.12	19.65	1.49	192		Yes
0012	QID 693	04:34	308.9	0.9	UT26-2-004	HPF	sci	2.88	1.00	19.64	1.49	185		Yes
0013	QID 693	04:40	308.9	0.9	UT26-2-004	HPF	sci	2.81	1.11	19.65	1.49	174		Yes
0014	QID 693	04:45	308.9	0.9	UT26-2-004	HPF	sci	2.78	1.08	19.65	1.48	153		Yes
0015	QID 89	05:01	841.4	10.0	UT26-2-019	HPF	sci	1.48	1.04	19.66	1.03	474		Yes
virus0000002_01	parallel	05:01	891			VIRUS	sci							Yes
0016	LFC Cal	05:17	106.5			HPF	cal							Yes
lrs20000001_01	BD+541216_056_W	05:22	60	7.0		LRS2	spec	1.55		19.27	0.73			Yes
lrs20000002_01	BD+541216_066_W	05:27	30	3.5		LRS2	spec	1.55		19.15	0.94			Yes
0017	HR5109_tell_std	05:36	117.2	9.0		HPF	telluric	1.75		20.11	1.08			Yes
0018	QID 152	05:49	95.9	11.4	UT26-2-011	HPF	sci	1.71		20.44	0.98	406		Yes
0019	QID 160	06:01	149.1	10.5	UT26-2-011	HPF	sci	1.58		19.54	1.30	419		Yes
virus0000003_01	parallel	06:12	1023			VIRUS	sci							Yes
0020	QID 117	06:13	969.1	8.8	UT26-2-019	HPF	sci	1.43	1.03	19.85	1.11	376		Yes
0021	LFC Cal	06:30	106.5			HPF	cal							Yes
0022	QID 471	06:36	915.9	6.7	G26-2-002	HPF	sci	1.25	1.45	19.48	0.87	122		Yes
virus0000004_01	parallel	06:36	1959			VIRUS	sci							Yes
0023	QID 471	06:52	915.9	1.7	G26-2-002	HPF	sci	1.27	0.99	19.44	0.86	113		Yes
0024	LFC Cal	07:09	106.5			HPF	cal							Yes
virus0000005_01	parallel	07:36	2047			VIRUS	sci							Yes
0025	QID 673	07:37	969.1	16.8	PSU26-2-013	HPF	sci	1.41	1.02	19.81		272		Yes
0026	QID 673	07:54	969.1	0.8	PSU26-2-013	HPF	sci	1.45	0.95	19.76		273		Yes
0027	LFC Cal	08:12	106.5			HPF	cal							Yes
0028	QID 178	08:19	85.2	8.6	UT26-2-011	HPF	sci	1.32	0.91	19.38	0.99	436		Yes
virus0000006_01	parallel	08:26	374			VIRUS	sci							Yes
0029	QID 162	08:27	340.8	7.3	UT26-2-011	HPF	sci	1.83	2.52	18.68	1.42	92		Yes
virus0000007_01	parallel	09:10	5097			VIRUS	sci							Yes
0030	QID 694	09:11	308.9	8.9	UT26-2-004	HPF	sci	3.18	1.19	19.64	1.40	217	High winds caused delay, only got 6 exposures this visit. Poor seeing and clouds also present, lost guide stars during last 2 exposures.	No
0031	QID 694	09:17	308.9	0.9	UT26-2-004	HPF	sci	3.08	1.40	19.28	1.40	216		No
0032	QID 694	09:22	308.9	-0.1	UT26-2-004	HPF	sci	3.11	1.61	19.23	1.37	186		No
0033	QID 694	09:28	308.9	0.9	UT26-2-004	HPF	sci	3.04	1.73	19.15	1.33	129		No
0034	QID 694	09:34	308.9	0.9	UT26-2-004	HPF	sci	3.06	1.62	19.16	1.37	30		No
0035	QID 694	09:40	308.9	0.9	UT26-2-004	HPF	sci	2.35	1.27	18.51	1.07	69		No
0036	LFC Cal	10:34	106.5			HPF	cal							Yes
lrs20000003_01	QID 377	10:34	180	7.0	UT26-2-017	LRS2-B	sci	1.98	1.36	18.83	0.33		Unreliable transparency measurement. Likely >0.5 but please reject if needed.	Yes
0037	LFC Cal	10:42	106.5			HPF	cal							Yes
virus0000008_01	parallel	10:42	360			VIRUS	sci							Yes
lrs20000004_01	QID 378	10:42	360	5.0	UT26-2-017	LRS2-R	sci	2.02	1.51	18.42				Yes
0038	LFC Cal	10:44	106.5			HPF	cal							Yes
0039	LFC Cal	10:56	106.5			HPF	cal							Yes
lrs20000005_01	QID 367	10:56	180	8.0	UT26-2-017	LRS2-B	sci	3.03	1.58	19.70	1.24		Poor image quality	No
0040	LFC Cal	11:05	106.5			HPF	cal							Yes
virus0000009_01	parallel	11:05	360			VIRUS	sci							Yes
lrs20000006_01	QID 368	11:05	360	6.0	UT26-2-017	LRS2-R	sci	2.10	1.32	17.97				No
0041	LFC Cal	11:07	106.5			HPF	cal							Yes
lrs20000007_01	bias	11:21	0			LRS2	cal							Yes
virus0000010_01	bias	11:22	0			VIRUS	cal							Yes
virus0000011_01	Cd-A	11:26	15		ENG26-2-002	VIRUS	cal							Yes
virus0000012_01	Hg	11:27	15		ENG26-2-002	VIRUS	cal							Yes
0042	Dark	11:45	319.5			HPF	cal							Yes
0043	Quartz FCU	11:57	74.5			HPF	cal							Yes
0044	Quartz FCU	11:58	74.5			HPF	cal							Yes
0045	Quartz FCU	12:00	74.5			HPF	cal							Yes
0046	Quartz FCU	12:02	74.5			HPF	cal							Yes
0047	Quartz FCU	12:04	74.5			HPF	cal							Yes
0048	Quartz FCU	12:05	74.5			HPF	cal							Yes
0049	Quartz FCU	12:07	74.5			HPF	cal							Yes
0050	Alpha Bright Cal	12:10	85.2			HPF	cal							Yes
0051	Alpha Bright Cal	12:12	85.2			HPF	cal							Yes
0052	Alpha Bright Cal	12:14	85.2			HPF	cal							Yes
0053	Alpha Bright Cal	12:16	85.2			HPF	cal							Yes
0054	LFC FCU	12:18	106.5			HPF	cal							Yes
0055	LFC FCU	12:21	106.5			HPF	cal							Yes
0056	LFC FCU	12:23	106.5			HPF	cal							Yes
0057	LFC FCU	12:25	106.5			HPF	cal							Yes
0058	LFC FCU	12:27	106.5			HPF	cal							Yes
0059	LFC FCU	12:30	106.5			HPF	cal							Yes
0060	LFC Cal	12:33	106.5			HPF	cal							Yes
0061	LFC Cal	12:35	106.5			HPF	cal							Yes
0062	Etalon Cal	12:43	159.8			HPF	cal							Yes
0063	Etalon Cal	12:46	159.8			HPF	cal							Yes
0064	Etalon Cal	12:49	159.8			HPF	cal							Yes
0065	Etalon Cal	12:52	159.8			HPF	cal							Yes
0066	UNe Slave Cal	12:56	426			HPF	cal							Yes
0067	UNe Slave Cal	13:04	426			HPF	cal							Yes
0068	UNe Slave Cal	13:11	426			HPF	cal							Yes
0069	UNe Slave Cal	13:19	426			HPF	cal							Yes
0070	UNe Slave Cal	13:27	426			HPF	cal							Yes
0071	UNe Slave Cal	13:35	426			HPF	cal							Yes
lrs20009900_01	bias	21:54	0			LRS2	cal							Yes
0065	LFC Cal	21:54	106.5			HPF	cal							Yes
virus0009900_01	flat_Qth	21:55	20			VIRUS	cal							Yes
virus0009901_01	bias	21:56	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	21:57	20			LRS2	cal							Yes
virus0009902_01	dark	21:58	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	21:59	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:00	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:02	15			LRS2	cal							Yes
0066	Dark	22:17	319.5			HPF	cal							Yes
0067	Quartz FCU	22:23	74.5			HPF	cal							Yes
0068	Quartz FCU	22:25	74.5			HPF	cal							Yes
0069	Quartz FCU	22:27	74.5			HPF	cal							Yes
0070	Quartz FCU	22:29	74.5			HPF	cal							Yes
0071	Quartz FCU	22:30	74.5			HPF	cal							Yes
0072	Quartz FCU	22:32	74.5			HPF	cal							Yes
0073	Quartz FCU	22:34	74.5			HPF	cal							Yes
0074	Alpha Bright Cal	22:36	85.2			HPF	cal							Yes
0075	Alpha Bright Cal	22:38	85.2			HPF	cal							Yes
0076	Alpha Bright Cal	22:40	85.2			HPF	cal							Yes
0077	Alpha Bright Cal	22:42	85.2			HPF	cal							Yes
0078	LFC FCU	22:45	106.5			HPF	cal							Yes
0079	LFC FCU	22:47	106.5			HPF	cal							Yes
0080	LFC Cal	22:50	106.5			HPF	cal							Yes
0081	LFC Cal	22:52	106.5			HPF	cal							Yes
0082	Etalon Cal	22:55	159.8			HPF	cal							Yes
0083	UNe Slave Cal	22:59	426			HPF	cal							Yes
lrs20000011_01	flat_Qth_R	23:00	15			LRS2	cal							Yes
lrs20000011_02	flat_Qth_R	23:01	15			LRS2	cal							Yes
lrs20000011_03	flat_Qth_R	23:03	15			LRS2	cal							Yes
lrs20000011_04	flat_Qth_R	23:04	15			LRS2	cal							Yes
lrs20000011_05	flat_Qth_R	23:05	15			LRS2	cal							Yes
0084	UNe Slave Cal	23:06	426			HPF	cal							Yes
lrs20000012_01	flat_ldls_long_B	23:06	20			LRS2	cal							Yes
lrs20000012_02	flat_ldls_long_B	23:08	20			LRS2	cal							Yes
lrs20000012_03	flat_ldls_long_B	23:09	20			LRS2	cal							Yes
lrs20000013_01	Cd-A_B	23:10	29			LRS2	cal							Yes
lrs20000013_02	Cd-A_B	23:12	29			LRS2	cal							Yes
lrs20000013_03	Cd-A_B	23:13	29			LRS2	cal							Yes
0085	UNe Slave Cal	23:14	426			HPF	cal							Yes
lrs20000014_01	FeAr_R	23:15	15			LRS2	cal							Yes
lrs20000014_02	FeAr_R	23:16	15			LRS2	cal							Yes
lrs20000014_03	FeAr_R	23:17	15			LRS2	cal							Yes
lrs20000015_01	Hg_R	23:18	20			LRS2	cal							Yes
lrs20000015_02	Hg_R	23:20	20			LRS2	cal							Yes
lrs20000015_03	Hg_R	23:21	20			LRS2	cal							Yes
0086	UNe Slave Cal	23:22	426			HPF	cal							Yes
lrs20000016_01	Hg_B	23:22	15			LRS2	cal							Yes
lrs20000016_02	Hg_B	23:23	15			LRS2	cal							Yes
lrs20000016_03	Hg_B	23:25	15			LRS2	cal							Yes
0087	UNe Slave Cal	23:30	426			HPF	cal							Yes
virus0000015_01	flat_ldls_long	23:31	15			VIRUS	cal							Yes
virus0000015_02	flat_ldls_long	23:33	15			VIRUS	cal							Yes
virus0000015_03	flat_ldls_long	23:34	15			VIRUS	cal							Yes
virus0000016_01	Cd-A	23:35	15			VIRUS	cal							Yes
0088	UNe Slave Cal	23:37	426			HPF	cal							Yes
virus0000016_02	Cd-A	23:37	15			VIRUS	cal							Yes
virus0000016_03	Cd-A	23:38	15			VIRUS	cal							Yes
virus0000017_01	Hg	23:40	15			VIRUS	cal							Yes
virus0000017_02	Hg	23:41	15			VIRUS	cal							Yes
virus0000017_03	Hg	23:43	15			VIRUS	cal							Yes
lrs20000017_01	bias	23:44	0			LRS2	cal							Yes
virus0000018_01	bias	23:44	0			VIRUS	cal							Yes
lrs20000017_02	bias	23:45	0			LRS2	cal							Yes
virus0000018_02	bias	23:45	0			VIRUS	cal							Yes
lrs20000017_03	bias	23:45	0			LRS2	cal							Yes
lrs20000017_04	bias	23:46	0			LRS2	cal							Yes
virus0000018_03	bias	23:46	0			VIRUS	cal							Yes
virus0000018_04	bias	23:47	0			VIRUS	cal							Yes
lrs20000017_05	bias	23:47	0			LRS2	cal							Yes
virus0000018_05	bias	23:48	0			VIRUS	cal							Yes
lrs20000017_06	bias	23:48	0			LRS2	cal							Yes
virus0000018_06	bias	23:48	0			VIRUS	cal							Yes
lrs20000017_07	bias	23:49	0			LRS2	cal							Yes
virus0000018_07	bias	23:49	0			VIRUS	cal							Yes
lrs20000017_08	bias	23:50	0			LRS2	cal							Yes
virus0000018_08	bias	23:50	0			VIRUS	cal							Yes
lrs20000017_09	bias	23:51	0			LRS2	cal							Yes
virus0000018_09	bias	23:51	0			VIRUS	cal							Yes
lrs20000017_10	bias	23:52	0			LRS2	cal							Yes
virus0000018_10	bias	23:52	0			VIRUS	cal							Yes
lrs20000017_11	bias	23:53	0			LRS2	cal							Yes
virus0000018_11	bias	23:53	0			VIRUS	cal							Yes
lrs20000018_01	dark	23:53	360			LRS2	cal							Yes
virus0000019_01	dark	23:54	360			VIRUS	cal							Yes