HET Night Report Reader

Civil Date	Ephemerides
2026-05-08	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:47	02:36	03:09	10:35	11:08	11:58	07:40	-
Night Length	7:26		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
Zach Vanderbosch	Amy Westfall	-	-

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:40	14.5	11.6	11:13	twilight	09:33
Total Time Open					9:33

Program	Night Priority	Science
03:09	Science
03:59	Idle due to weather (Clouds)
04:41	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:15	03:00	0.61	0.94	-380	+2642	17.3	13.2	13.2	344	4	First of Night
↪ Comments			External temperature rose 2 degrees during stacking, resulting in poor dome seeing.
07:54	08:25	0.46	0.69	-340	+2753	16.9	15.1	15.2	313	6	Stack/Re-stack
11:06	11:12	0.45	0.68	-490	+3054	16.6	14.7	14.8	297	6	Post-Observing

Problem Reports					no PRs

Ops Comments	none

TO Comments	Clear and calm night. Temperature rose at the start of the night resulting in large temperature gradient between inside and outside of dome. Some poor dome seeing in the first half of night.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000029_09	bias	00:00	0			LRS2	cal							Yes
virus0000025_09	bias	00:00	0			VIRUS	cal							Yes
lrs20000029_10	bias	00:01	0			LRS2	cal							Yes
virus0000025_10	bias	00:01	0			VIRUS	cal							Yes
lrs20000029_11	bias	00:01	0			LRS2	cal							Yes
virus0000025_11	bias	00:02	0			VIRUS	cal							Yes
lrs20000030_01	dark	00:02	360			LRS2	cal							Yes
virus0000026_01	dark	00:03	360			VIRUS	cal							Yes
lrs20000030_02	dark	00:09	360			LRS2	cal							Yes
virus0000026_02	dark	00:09	360			VIRUS	cal							Yes
lrs20000030_03	dark	00:16	360			LRS2	cal							Yes
virus0000026_03	dark	00:16	360			VIRUS	cal							Yes
lrs20000001_01	skyflat	01:52	7			LRS2	cal							Yes
lrs20000002_01	skyflat	01:53	10			LRS2	cal							Yes
lrs20000003_01	skyflat	01:54	13			LRS2	cal							Yes
lrs20000004_01	skyflat	01:55	16			LRS2	cal							Yes
lrs20000005_01	skyflat	01:57	22			LRS2	cal							Yes
lrs20000006_01	skyflat	01:58	30			LRS2	cal							Yes
virus0000001_01	skyflat	02:02	7			VIRUS	cal							Yes
virus0000002_01	skyflat	02:03	10			VIRUS	cal							Yes
virus0000003_01	skyflat	02:04	14			VIRUS	cal							Yes
virus0000004_01	skyflat	02:06	18			VIRUS	cal							Yes
virus0000005_01	skyflat	02:07	26			VIRUS	cal							Yes
lrs20000007_01	parallel	03:06	1000			LRS2	sci							Yes
virus0000006_01	QID 237	03:06	1000	5.3	PSU26-2-003	VIRUS	sci	1.89		21.69	0.56		Seeing and transparency variations throughout exposures. Please check data quality and reject if needed.	No
0001	LFC Cal	03:07	106.5			HPF	cal							Yes
0002	LFC Cal	03:09	106.5			HPF	cal							Yes
0003	LFC Cal	03:11	106.5			HPF	cal							Yes
lrs20000007_02	parallel	03:24	1000			LRS2	sci							Yes
virus0000006_02	QID 237	03:24	1000	1.3	PSU26-2-003	VIRUS	sci	2.40		21.85	0.89			No
lrs20000007_03	parallel	03:42	1000			LRS2	sci							Yes
virus0000006_03	QID 237	03:42	1000	1.3	PSU26-2-003	VIRUS	sci	2.35		21.82	0.66			No
0004	QID 809	04:07	649.6	8.2	PSU26-2-015	HPF	sci	1.68		19.92	0.41	236	Thin clouds, low transparency.	No
virus0000007_01	parallel	04:07	2083			VIRUS	sci							Yes
0005	QID 809	04:19	649.6	1.2	PSU26-2-015	HPF	sci	1.66		19.89	0.43	260		No
0006	QID 809	04:31	649.6	0.2	PSU26-2-015	HPF	sci	1.70		20.01	0.90	340		No
0007	LFC Cal	04:43	106.5			HPF	cal							Yes
0008	QID 476	04:48	915.9	6.7	G26-2-002	HPF	sci	1.78		20.02	0.99	40		Yes
virus0000008_01	parallel	04:48	1959			VIRUS	sci							Yes
0009	QID 476	05:04	915.9	1.7	G26-2-002	HPF	sci	1.61	0.80	19.93	1.00	33		Yes
0010	LFC Cal	05:21	106.5			HPF	cal							Yes
0011	QID 876	05:28	681.6	8.6	UT26-2-009	HPF	sci	2.14	1.13	20.21	0.74	73	Image quality slightly above 2.0", please check data quality and reject if needed.	Yes
virus0000009_01	parallel	05:28	1453			VIRUS	sci							Yes
0012	QID 876	05:41	681.6	0.6	UT26-2-009	HPF	sci	1.98	1.32	20.25	0.79	79		Yes
lrs20000008_01	parallel	05:58	360			LRS2	sci							Yes
virus0000010_01	QID 559	05:58	360	6.0	UT26-2-016	VIRUS	sci	1.93	1.17	21.77	0.95			Yes
0013	LFC Cal	05:59	106.5			HPF	cal							Yes
0014	LFC Cal	06:01	106.5			HPF	cal							Yes
lrs20000008_02	parallel	06:06	360			LRS2	sci							Yes
virus0000010_02	QID 559	06:06	360	2.0	UT26-2-016	VIRUS	sci	1.93	1.10	21.77	0.96			Yes
lrs20000008_03	parallel	06:13	360			LRS2	sci							Yes
virus0000010_03	QID 559	06:13	360	1.0	UT26-2-016	VIRUS	sci	1.91	1.09	21.77	0.95			Yes
lrs20000009_01	parallel	06:23	360			LRS2	sci							Yes
virus0000011_01	QID 554	06:23	360	4.0	UT26-2-016	VIRUS	sci	2.03	1.13	21.88	0.85			Yes
0015	LFC Cal	06:24	106.5			HPF	cal							Yes
0016	LFC Cal	06:26	106.5			HPF	cal							Yes
lrs20000009_02	parallel	06:30	360			LRS2	sci							Yes
virus0000011_02	QID 554	06:30	360	1.0	UT26-2-016	VIRUS	sci	1.89	1.28	21.86	0.84			Yes
lrs20000009_03	parallel	06:38	360			LRS2	sci							Yes
virus0000011_03	QID 554	06:38	360	2.0	UT26-2-016	VIRUS	sci	1.82	1.08	21.85	0.82			Yes
virus0000012_01	HZ21_042_W	06:51	60	7.0		VIRUS	spec	2.22	1.20	21.82	0.74			Yes
virus0000012_02	HZ21_042_W	06:53	60	1.0		VIRUS	spec	2.34	1.06	21.74	0.75			Yes
virus0000012_03	HZ21_042_W	06:55	60	1.0		VIRUS	spec	2.29	1.21	21.79	0.78			Yes
lrs20000010_01	BD+601753_056_E	07:02	30	6.5		LRS2	spec	2.02	1.09	21.85	0.89			Yes
lrs20000011_01	BD+601753_066_E	07:07	30	4.5		LRS2	spec	2.04	1.18	20.80	0.98		Metadata issue due to mistyped vlexp command. Rejected and re-exposed with LRS2-R in image lrs20000012.	No
lrs20000012_01	BD+601753_066_E	07:14	30	6.5		LRS2	spec	2.22	1.04	20.84	0.97			Yes
virus0000013_01	parallel	07:20	2047			VIRUS	sci							Yes
0017	QID 800	07:21	969.1	5.8	PSU26-2-015	HPF	sci	2.08	1.12	20.02	0.87	75		Yes
0018	QID 800	07:38	969.1	0.8	PSU26-2-015	HPF	sci	2.02	1.13	19.90	0.91	81		Yes
0019	LFC Cal	07:56	106.5			HPF	cal							Yes
0020	HR7384_tell_std	08:31	330.2	5.5		HPF	telluric	1.40	1.06	19.63	0.82			Yes
0021	LFC Cal	08:45	106.5			HPF	cal							Yes
virus0000014_01	parallel	08:45	600			VIRUS	sci							Yes
lrs20000013_01	QID 884	08:45	600	9.0	PSU26-2-004	LRS2-B	sci	1.50	1.10	20.44	0.85		Target was much fainter than expected during setup, probably in eclipse.	Yes
0022	LFC Cal	08:47	106.5			HPF	cal							Yes
0023	LFC Cal	08:50	106.5			HPF	cal							Yes
0024	QID 860	09:03	575.1	8.4	UT26-2-009	HPF	sci	1.55	1.08	19.97	0.80	90		Yes
virus0000015_01	parallel	09:03	1233			VIRUS	sci							Yes
0025	QID 860	09:14	575.1	0.4	UT26-2-009	HPF	sci	1.62	1.53	20.10	0.65	76		Yes
lrs20000014_01	QID 888	09:30	20	6.7	PSU26-2-004	LRS2-B	sci	1.49	1.21	20.54	0.76		Some fibers may be near saturation.	Yes
0026	LFC Cal	09:37	106.5			HPF	cal							Yes
virus0000016_01	parallel	09:37	300			VIRUS	sci							Yes
lrs20000015_01	QID 405	09:37	300	7.0	UT26-2-017	LRS2-B	sci	1.32	1.22	20.39	1.02			Yes
0027	LFC Cal	09:40	106.5			HPF	cal							Yes
0028	LFC Cal	09:46	106.5			HPF	cal							Yes
virus0000017_01	parallel	09:46	600			VIRUS	sci							Yes
lrs20000016_01	QID 406	09:46	600	4.0	UT26-2-017	LRS2-R	sci	1.21	1.06	20.33	0.96			Yes
0029	LFC Cal	09:49	106.5			HPF	cal							Yes
0030	LFC Cal	09:51	106.5			HPF	cal							Yes
virus0000018_01	parallel	10:02	900			VIRUS	sci							Yes
0031	LFC Cal	10:03	106.5			HPF	cal							Yes
lrs20000017_01	QID 882	10:03	900	7.0	PSU26-2-004	LRS2-B	sci	1.47	0.95	20.39	0.99			Yes
0032	LFC Cal	10:05	106.5			HPF	cal							Yes
0033	LFC Cal	10:07	106.5			HPF	cal							Yes
0034	QID 805	10:24	969.1	5.8	PSU26-2-015	HPF	sci	1.46	1.14	20.04	0.87	329		Yes
virus0000019_01	parallel	10:24	2047			VIRUS	sci							Yes
0035	QID 805	10:41	969.1	0.8	PSU26-2-015	HPF	sci	1.50	1.43	20.00	0.89	355		Yes
0036	LFC Cal	10:59	106.5			HPF	cal							Yes
0037	QID 186	11:04	74.5	6.8	UT26-2-011	HPF	sci	1.66	1.29	18.74	0.76	302		Yes
lrs20000018_01	bias	11:08	0			LRS2	cal							Yes
virus0000020_01	bias	11:08	0			VIRUS	cal							Yes
virus0000021_01	Cd-A	11:12	15		ENG26-2-002	VIRUS	cal							Yes
virus0000022_01	Hg	11:14	15		ENG26-2-002	VIRUS	cal							Yes
0038	Dark	11:21	319.5			HPF	cal							Yes
0039	Quartz FCU	11:32	74.5			HPF	cal							Yes
0040	Quartz FCU	11:34	74.5			HPF	cal							Yes
0041	Quartz FCU	11:36	74.5			HPF	cal							Yes
0042	Quartz FCU	11:38	74.5			HPF	cal							Yes
0043	Quartz FCU	11:39	74.5			HPF	cal							Yes
0044	Quartz FCU	11:41	74.5			HPF	cal							Yes
0045	Quartz FCU	11:43	74.5			HPF	cal							Yes
0046	Alpha Bright Cal	11:45	85.2			HPF	cal							Yes
0047	Alpha Bright Cal	11:47	85.2			HPF	cal							Yes
0048	Alpha Bright Cal	11:49	85.2			HPF	cal							Yes
0049	Alpha Bright Cal	11:51	85.2			HPF	cal							Yes
0050	LFC FCU	11:54	106.5			HPF	cal							Yes
0051	LFC FCU	11:56	106.5			HPF	cal							Yes
0052	LFC FCU	11:58	106.5			HPF	cal							Yes
0053	LFC FCU	12:01	106.5			HPF	cal							Yes
0054	LFC FCU	12:03	106.5			HPF	cal							Yes
0055	LFC FCU	12:05	106.5			HPF	cal							Yes
0056	LFC Cal	12:08	106.5			HPF	cal							Yes
0057	LFC Cal	12:11	106.5			HPF	cal							Yes
0058	Etalon Cal	12:18	159.8			HPF	cal							Yes
0059	Etalon Cal	12:22	159.8			HPF	cal							Yes
0060	Etalon Cal	12:25	159.8			HPF	cal							Yes
0061	Etalon Cal	12:28	159.8			HPF	cal							Yes
0062	UNe Slave Cal	12:32	426			HPF	cal							Yes
0063	UNe Slave Cal	12:39	426			HPF	cal							Yes
0064	UNe Slave Cal	12:47	426			HPF	cal							Yes
0065	UNe Slave Cal	12:55	426			HPF	cal							Yes
0066	UNe Slave Cal	13:03	426			HPF	cal							Yes
0067	UNe Slave Cal	13:10	426			HPF	cal							Yes
0081	LFC Cal	21:51	106.5			HPF	cal							Yes
0082	LFC Cal	22:13	106.5			HPF	cal							Yes
lrs20009909_01	bias	22:13	0			LRS2	cal							Yes
virus0009907_01	flat_Qth	22:13	20			VIRUS	cal							Yes
virus0009908_01	bias	22:15	0			VIRUS	cal							Yes
lrs20009910_01	flat_ldls_long_B	22:15	20			LRS2	cal							Yes
virus0009909_01	dark	22:17	15			VIRUS	cal							Yes
lrs20009911_01	Cd-A_B	22:18	29			LRS2	cal							Yes
lrs20009912_01	FeAr_R	22:19	15			LRS2	cal							Yes
lrs20009913_01	Hg_B	22:21	15			LRS2	cal							Yes
0083	Dark	22:26	319.5			HPF	cal							Yes
0084	Quartz FCU	22:33	74.5			HPF	cal							Yes
0085	Quartz FCU	22:34	74.5			HPF	cal							Yes
0086	Quartz FCU	22:36	74.5			HPF	cal							Yes
0087	Quartz FCU	22:38	74.5			HPF	cal							Yes
0088	Quartz FCU	22:40	74.5			HPF	cal							Yes
0089	Quartz FCU	22:42	74.5			HPF	cal							Yes
0090	Quartz FCU	22:43	74.5			HPF	cal							Yes
0091	Alpha Bright Cal	22:46	85.2			HPF	cal							Yes
0092	Alpha Bright Cal	22:48	85.2			HPF	cal							Yes
0093	Alpha Bright Cal	22:50	85.2			HPF	cal							Yes
0094	Alpha Bright Cal	22:52	85.2			HPF	cal							Yes
0095	LFC FCU	22:54	106.5			HPF	cal							Yes
0096	LFC FCU	22:57	106.5			HPF	cal							Yes
0097	LFC Cal	22:59	106.5			HPF	cal							Yes
0098	LFC Cal	23:02	106.5			HPF	cal							Yes
0099	Etalon Cal	23:04	159.8			HPF	cal							Yes
0100	UNe Slave Cal	23:08	426			HPF	cal							Yes
lrs20000023_01	flat_Qth_R	23:09	15			LRS2	cal							Yes
lrs20000023_02	flat_Qth_R	23:10	15			LRS2	cal							Yes
lrs20000023_03	flat_Qth_R	23:12	15			LRS2	cal							Yes
lrs20000023_04	flat_Qth_R	23:13	15			LRS2	cal							Yes
lrs20000023_05	flat_Qth_R	23:14	15			LRS2	cal							Yes
lrs20000024_01	flat_ldls_long_B	23:15	20			LRS2	cal							Yes
0101	UNe Slave Cal	23:16	426			HPF	cal							Yes
lrs20000024_02	flat_ldls_long_B	23:17	20			LRS2	cal							Yes
lrs20000024_03	flat_ldls_long_B	23:18	20			LRS2	cal							Yes
lrs20000025_01	Cd-A_B	23:19	29			LRS2	cal							Yes
lrs20000025_02	Cd-A_B	23:21	29			LRS2	cal							Yes
lrs20000025_03	Cd-A_B	23:22	29			LRS2	cal							Yes
0102	UNe Slave Cal	23:24	426			HPF	cal							Yes
lrs20000026_01	FeAr_R	23:24	15			LRS2	cal							Yes
lrs20000026_02	FeAr_R	23:25	15			LRS2	cal							Yes
lrs20000026_03	FeAr_R	23:26	15			LRS2	cal							Yes
lrs20000027_01	Hg_R	23:27	20			LRS2	cal							Yes
lrs20000027_02	Hg_R	23:28	20			LRS2	cal							Yes
lrs20000027_03	Hg_R	23:30	20			LRS2	cal							Yes
0103	UNe Slave Cal	23:31	426			HPF	cal							Yes
lrs20000028_01	Hg_B	23:31	15			LRS2	cal							Yes
lrs20000028_02	Hg_B	23:32	15			LRS2	cal							Yes
lrs20000028_03	Hg_B	23:34	15			LRS2	cal							Yes
0104	UNe Slave Cal	23:39	426			HPF	cal							Yes
virus0000022_01	flat_ldls_long	23:40	15			VIRUS	cal							Yes
virus0000022_02	flat_ldls_long	23:42	15			VIRUS	cal							Yes
virus0000022_03	flat_ldls_long	23:43	15			VIRUS	cal							Yes
virus0000023_01	Cd-A	23:44	15			VIRUS	cal							Yes
virus0000023_02	Cd-A	23:46	15			VIRUS	cal							Yes
0105	UNe Slave Cal	23:47	426			HPF	cal							Yes
virus0000023_03	Cd-A	23:47	15			VIRUS	cal							Yes
virus0000024_01	Hg	23:49	15			VIRUS	cal							Yes
virus0000024_02	Hg	23:50	15			VIRUS	cal							Yes
virus0000024_03	Hg	23:51	15			VIRUS	cal							Yes
lrs20000029_01	bias	23:53	0			LRS2	cal							Yes
virus0000025_01	bias	23:53	0			VIRUS	cal							Yes
lrs20000029_02	bias	23:54	0			LRS2	cal							Yes
lrs20000029_03	bias	23:54	0			LRS2	cal							Yes
virus0000025_02	bias	23:54	0			VIRUS	cal							Yes
virus0000025_03	bias	23:55	0			VIRUS	cal							Yes
lrs20000029_04	bias	23:55	0			LRS2	cal							Yes
virus0000025_04	bias	23:56	0			VIRUS	cal							Yes
lrs20000029_05	bias	23:56	0			LRS2	cal							Yes
virus0000025_05	bias	23:57	0			VIRUS	cal							Yes
lrs20000029_06	bias	23:57	0			LRS2	cal							Yes
virus0000025_06	bias	23:57	0			VIRUS	cal							Yes
lrs20000029_07	bias	23:58	0			LRS2	cal							Yes
virus0000025_07	bias	23:58	0			VIRUS	cal							Yes
lrs20000029_08	bias	23:59	0			LRS2	cal							Yes
virus0000025_08	bias	23:59	0			VIRUS	cal							Yes

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