HET Night Report Reader

Civil Date	Ephemerides
2026-04-12	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:29	02:15	02:45	11:07	11:36	12:24	10:14	-
Night Length	8:22		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Tyler Ryburn	Amy Westfall

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:26	17.4	14.6	11:43	twilight	10:17
Total Time Open					10:17

Program	Night Priority	Science
02:34	Idle due to weather (clouds)
02:49	Science
06:07	Idle due to weather (clouds)
06:34	Science
06:56	Idle due to weather (clouds)
07:21	Science
07:51	Idle due to weather (heavy clouds)
08:26	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:58	02:25	0.64	1.15	110	-5435	17.0	14.4	14.9	261	8	First of Night
11:36	11:42	0.76	1.25	370	-5435	14.7	14.7	0.0	208	4	Post-Observing
↪ Comments			Truss temperature inaccurate; reported 0.

Problem Reports					no PRs

TO Comments	Intermittent clouds, calm night.

RA Comments	large overheads due to patchy clouds and/or faint guide stars requiring longer setup

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	Alpha Bright Cal	00:00	85.2			HPF	cal							Yes
0002	LFC FCU	00:03	106.5			HPF	cal							Yes
0003	LFC FCU	00:05	106.5			HPF	cal							Yes
0004	LFC Cal	00:08	106.5			HPF	cal							Yes
0005	LFC Cal	00:10	106.5			HPF	cal							Yes
0006	Etalon Cal	00:13	159.8			HPF	cal							Yes
0007	UNe Slave Cal	00:16	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:18	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:20	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:21	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:22	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:23	15			LRS2	cal							Yes
0008	UNe Slave Cal	00:24	426			HPF	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:24	20			LRS2	cal							Yes
lrs20000002_02	flat_ldls_long_B	00:26	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	00:27	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	00:28	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	00:30	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	00:31	29			LRS2	cal							Yes
0009	UNe Slave Cal	00:32	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	00:33	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	00:34	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	00:35	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	00:36	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	00:38	20			LRS2	cal							Yes
lrs20000005_03	Hg_R	00:39	20			LRS2	cal							Yes
0010	UNe Slave Cal	00:40	426			HPF	cal							Yes
lrs20000006_01	Hg_B	00:40	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	00:42	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	00:43	15			LRS2	cal							Yes
0011	UNe Slave Cal	00:47	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	00:49	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	00:51	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	00:52	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	00:54	15			VIRUS	cal							Yes
0012	UNe Slave Cal	00:55	426			HPF	cal							Yes
virus0000002_02	Cd-A	00:55	15			VIRUS	cal							Yes
virus0000002_03	Cd-A	00:56	15			VIRUS	cal							Yes
virus0000003_01	Hg	00:58	15			VIRUS	cal							Yes
virus0000003_02	Hg	00:59	15			VIRUS	cal							Yes
virus0000003_03	Hg	01:01	15			VIRUS	cal							Yes
lrs20000007_01	dark	01:02	360			LRS2	cal							Yes
virus0000004_01	dark	01:02	360			VIRUS	cal							Yes
lrs20000007_02	dark	01:09	360			LRS2	cal							Yes
virus0000004_02	dark	01:09	360			VIRUS	cal							Yes
lrs20000007_03	dark	01:15	360			LRS2	cal							Yes
virus0000004_03	dark	01:16	360			VIRUS	cal							Yes
lrs20000008_01	skyflat	01:34	7			LRS2	cal							Yes
lrs20000009_01	skyflat	01:35	10			LRS2	cal							Yes
lrs20000010_01	skyflat	01:37	13			LRS2	cal							Yes
lrs20000011_01	skyflat	01:38	16			LRS2	cal							Yes
lrs20000012_01	skyflat	01:39	22			LRS2	cal							Yes
lrs20000013_01	skyflat	01:40	30			LRS2	cal							Yes
virus0000005_01	skyflat	01:43	7			VIRUS	cal							Yes
virus0000006_01	skyflat	01:44	10			VIRUS	cal							Yes
virus0000007_01	skyflat	01:45	14			VIRUS	cal							Yes
virus0000008_01	skyflat	01:47	18			VIRUS	cal							Yes
virus0000009_01	skyflat	01:48	26			VIRUS	cal							Yes
0013	LFC Cal	02:37	106.5			HPF	cal							Yes
lrs20000015_01	parallel	02:37	300			LRS2	sci							Yes
virus0000010_01	parallel	02:37	300			VIRUS	sci							Yes
0014	LFC Cal	02:40	106.5			HPF	cal							Yes
lrs20000014_01	HZ21_056_E	02:43	300	5.0		LRS2	spec	1.54		21.61	0.10			No
virus0000012_01	parallel	02:44	300			VIRUS	spec							Yes
lrs20000016_01	HZ21_056_E	02:44	300	0.0		LRS2	spec	1.53		21.61	0.11			No
lrs20000017_01	HD55677_056_W	02:58	30	9.5		LRS2	spec	1.87		21.42	0.37			Yes
lrs20000018_01	HD55677_066_W	03:02	30	2.5		LRS2	spec	1.65		20.46	0.75			Yes
0015	HR2893_tell_std	03:12	330.2	10.5		HPF	telluric	1.79		20.04	0.87			Yes
0016	QID 151	03:25	223.7	6.3	UT26-2-011	HPF	sci	1.51		20.06	0.93	281		Yes
0017	LFC Cal	03:41	106.5			HPF	cal							Yes
virus0000013_01	parallel	03:41	1800			VIRUS	sci							Yes
lrs20000019_01	QID 790	03:41	1800	13.0	UT26-2-003	LRS2-B	sci	1.76		22.04	0.72			Yes
0018	LFC Cal	03:44	106.5			HPF	cal							Yes
0019	LFC Cal	03:46	106.5			HPF	cal							Yes
0020	QID 97	04:17	969.1	5.8	UT26-2-019	HPF	sci	1.46		20.63	0.84	413		Yes
virus0000014_01	parallel	04:17	1023			VIRUS	sci							Yes
0021	LFC Cal	04:36	106.5			HPF	cal							Yes
0022	LFC Cal	04:49	106.5			HPF	cal							Yes
lrs20000020_01	parallel	04:49	1000			LRS2	sci							Yes
virus0000015_01	QID 235	04:49	1000	15.3	PSU26-2-003	VIRUS	sci	1.68		21.85	0.95			Yes
0023	LFC Cal	04:51	106.5			HPF	cal							Yes
0024	LFC Cal	04:54	106.5			HPF	cal							Yes
lrs20000020_02	parallel	05:07	1000			LRS2	sci							Yes
virus0000015_02	QID 235	05:07	1000	1.3	PSU26-2-003	VIRUS	sci	1.77		21.85	0.98			Yes
lrs20000020_03	parallel	05:24	1000			LRS2	sci							Yes
virus0000015_03	QID 235	05:24	1000	1.3	PSU26-2-003	VIRUS	sci	1.75		21.87	0.98			Yes
0025	LFC Cal	05:47	106.5			HPF	cal							Yes
lrs20000021_01	parallel	05:47	360			LRS2	sci							Yes
virus0000016_01	QID 552	05:47	360	6.0	UT26-2-016	VIRUS	sci	1.65		21.84	0.77		Transparency dropped in last exposure; please review data quality and reject if not acceptable	Yes
0026	LFC Cal	05:49	106.5			HPF	cal							Yes
lrs20000021_02	parallel	05:54	360			LRS2	sci							Yes
virus0000016_02	QID 552	05:54	360	1.0	UT26-2-016	VIRUS	sci	1.51		21.85	0.70		Transparency dropped in last exposure; please review data quality and reject if not acceptable	Yes
lrs20000021_03	parallel	06:01	360			LRS2	sci							Yes
virus0000016_03	QID 552	06:01	360	1.0	UT26-2-016	VIRUS	sci	1.42		21.86	0.37		Transparency dropped in last exposure; please review data quality and reject if not acceptable	Yes
0027	LFC Cal	06:14	106.5			HPF	cal							Yes
virus0000017_01	parallel	06:14	1200			VIRUS	sci							Yes
lrs20000022_01	QID 468	06:14	1200	7.0	UT26-2-008	LRS2-B	sci	1.45		21.70	0.29			No
0028	LFC Cal	06:16	106.5			HPF	cal							Yes
0029	LFC Cal	06:19	106.5			HPF	cal							Yes
virus0000018_01	P177D_052_E	06:39	60	5.0		VIRUS	spec	1.73		21.99	0.43			Yes
virus0000018_02	P177D_052_E	06:41	60	1.0		VIRUS	spec	1.77		21.99	0.46			Yes
virus0000018_03	P177D_052_E	06:43	60	1.0		VIRUS	spec	1.61		21.93	0.33			Yes
0030	LFC Cal	06:51	106.5			HPF	cal							Yes
virus0000019_01	parallel	06:51	300			VIRUS	sci							Yes
lrs20000023_01	QID 583	06:51	300	7.0	PSU26-2-001	LRS2-R	sci	1.69		20.70	0.70			P4
0031	LFC Cal	06:54	106.5			HPF	cal							Yes
0032	LFC Cal	07:06	106.5			HPF	cal							Yes
virus0000020_01	parallel	07:06	900			VIRUS	sci							Yes
lrs20000024_01	QID 15	07:06	900	10.0	PSU26-2-005	LRS2-R	sci	1.48		20.55	0.41			No
0033	LFC Cal	07:08	106.5			HPF	cal							Yes
0034	LFC Cal	07:11	106.5			HPF	cal							Yes
0035	LFC Cal	07:35	106.5			HPF	cal							Yes
virus0000021_01	parallel	07:35	300			VIRUS	sci							Yes
lrs20000025_01	QID 614	07:35	300	14.0	PSU26-2-001	LRS2-R	sci	1.29		20.62	0.31			P4
0036	LFC Cal	07:37	106.5			HPF	cal							Yes
virus0000022_01	parallel	07:45	300			VIRUS	sci							Yes
0037	LFC Cal	07:46	106.5			HPF	cal							Yes
lrs20000026_01	QID 586	07:46	300	6.0	PSU26-2-001	LRS2-R	sci	1.32		20.84	0.90			P4
0038	LFC Cal	07:48	106.5			HPF	cal							Yes
0039	LFC Cal	08:32	106.5			HPF	cal							Yes
virus0000023_01	parallel	08:32	1435			VIRUS	sci							Yes
lrs20000027_01	QID 2	08:32	1435	6.1	PSU26-2-005	LRS2-B	sci	1.22		22.07	0.75			Yes
0040	LFC Cal	08:34	106.5			HPF	cal							Yes
0041	LFC Cal	08:37	106.5			HPF	cal							Yes
virus0000024_01	parallel	09:02	1800			VIRUS	sci							Yes
0042	LFC Cal	09:03	106.5			HPF	cal							Yes
lrs20000028_01	QID 461	09:03	1800	7.0	UT26-2-018	LRS2-B	sci	1.28		21.96	0.61			Yes
0043	LFC Cal	09:05	106.5			HPF	cal							Yes
0044	LFC Cal	09:07	106.5			HPF	cal							Yes
virus0000025_01	parallel	09:36	900			VIRUS	sci							Yes
lrs20000029_01	QID 462	09:36	900	3.0	UT26-2-018	LRS2-R	sci	1.12		20.60	0.82			Yes
0045	LFC Cal	09:37	106.5			HPF	cal							Yes
0046	LFC Cal	09:39	106.5			HPF	cal							Yes
0047	LFC Cal	09:41	106.5			HPF	cal							Yes
0048	LFC Cal	09:57	106.5			HPF	cal							Yes
virus0000026_01	parallel	09:57	2800			VIRUS	sci							Yes
lrs20000030_01	QID 708	09:57	2800	6.3	UT26-2-002	LRS2-B	sci	1.28	0.88	21.88	0.89			Yes
0049	LFC Cal	10:00	106.5			HPF	cal							Yes
0050	LFC Cal	10:02	106.5			HPF	cal							Yes
0051	LFC Cal	10:49	106.5			HPF	cal							Yes
virus0000027_01	parallel	10:49	804			VIRUS	sci							Yes
lrs20000031_01	QID 705	10:49	804	4.6	G26-2-001	LRS2-B	sci	1.31	0.95	21.61	0.78			Yes
0052	LFC Cal	10:51	106.5			HPF	cal							Yes
0053	LFC Cal	10:53	106.5			HPF	cal							Yes
virus0000028_01	parallel	11:07	1200			VIRUS	sci							Yes
0054	LFC Cal	11:08	106.5			HPF	cal							Yes
lrs20000032_01	QID 468	11:08	1200	6.0	UT26-2-008	LRS2-B	sci	1.84	1.34	21.58	0.81			Yes
0055	LFC Cal	11:10	106.5			HPF	cal							Yes
0056	LFC Cal	11:12	106.5			HPF	cal							Yes
0057	QID 174	11:34	32	5.5	UT26-2-011	HPF	sci	1.61	1.33	19.98	0.64	282		Yes
lrs20000033_01	bias	11:36	0			LRS2	cal							Yes
virus0000029_01	bias	11:36	0			VIRUS	cal							Yes
lrs20000033_02	bias	11:37	0			LRS2	cal							Yes
virus0000029_02	bias	11:37	0			VIRUS	cal							Yes
lrs20000033_03	bias	11:38	0			LRS2	cal							Yes
lrs20000033_04	bias	11:38	0			LRS2	cal							Yes
virus0000029_03	bias	11:38	0			VIRUS	cal							Yes
virus0000029_04	bias	11:39	0			VIRUS	cal							Yes
lrs20000033_05	bias	11:39	0			LRS2	cal							Yes
virus0000029_05	bias	11:40	0			VIRUS	cal							Yes
lrs20000033_06	bias	11:40	0			LRS2	cal							Yes
virus0000029_06	bias	11:40	0			VIRUS	cal							Yes
lrs20000033_07	bias	11:41	0			LRS2	cal							Yes
virus0000029_07	bias	11:41	0			VIRUS	cal							Yes
lrs20000033_08	bias	11:42	0			LRS2	cal							Yes
virus0000029_08	bias	11:42	0			VIRUS	cal							Yes
lrs20000033_09	bias	11:43	0			LRS2	cal							Yes
virus0000029_09	bias	11:43	0			VIRUS	cal							Yes
lrs20000033_10	bias	11:44	0			LRS2	cal							Yes
virus0000029_10	bias	11:44	0			VIRUS	cal							Yes
lrs20000033_11	bias	11:45	0			LRS2	cal							Yes
virus0000029_11	bias	11:45	0			VIRUS	cal							Yes
lrs20000034_01	bias	11:47	0			LRS2	cal							Yes
virus0000030_01	bias	11:47	0			VIRUS	cal							Yes
virus0000031_01	Cd-A	11:52	15		ENG26-2-002	VIRUS	cal							Yes
virus0000032_01	Hg	11:53	15		ENG26-2-002	VIRUS	cal							Yes
0058	Dark	12:00	319.5			HPF	cal							Yes
0059	Quartz FCU	12:12	74.5			HPF	cal							Yes
0060	Quartz FCU	12:14	74.5			HPF	cal							Yes
0061	Quartz FCU	12:16	74.5			HPF	cal							Yes
0062	Quartz FCU	12:17	74.5			HPF	cal							Yes
0063	Quartz FCU	12:19	74.5			HPF	cal							Yes
0064	Quartz FCU	12:21	74.5			HPF	cal							Yes
0065	Quartz FCU	12:23	74.5			HPF	cal							Yes
0066	Alpha Bright Cal	12:25	85.2			HPF	cal							Yes
0067	Alpha Bright Cal	12:27	85.2			HPF	cal							Yes
0068	Alpha Bright Cal	12:29	85.2			HPF	cal							Yes
0069	Alpha Bright Cal	12:31	85.2			HPF	cal							Yes
0070	LFC FCU	12:34	106.5			HPF	cal							Yes
0071	LFC FCU	12:36	106.5			HPF	cal							Yes
0072	LFC FCU	12:38	106.5			HPF	cal							Yes
0073	LFC FCU	12:40	106.5			HPF	cal							Yes
0074	LFC FCU	12:43	106.5			HPF	cal							Yes
0075	LFC FCU	12:45	106.5			HPF	cal							Yes
0076	LFC Cal	12:48	106.5			HPF	cal							Yes
0077	LFC Cal	12:50	106.5			HPF	cal							Yes
0078	Etalon Cal	12:58	159.8			HPF	cal							Yes
0079	Etalon Cal	13:01	159.8			HPF	cal							Yes
0080	Etalon Cal	13:04	159.8			HPF	cal							Yes
0081	Etalon Cal	13:08	159.8			HPF	cal							Yes
0082	UNe Slave Cal	13:11	426			HPF	cal							Yes
0083	UNe Slave Cal	13:19	426			HPF	cal							Yes
0084	UNe Slave Cal	13:27	426			HPF	cal							Yes
0085	UNe Slave Cal	13:35	426			HPF	cal							Yes
0086	UNe Slave Cal	13:42	426			HPF	cal							Yes
0087	UNe Slave Cal	13:50	426			HPF	cal							Yes
0060	LFC Cal	23:12	106.5			HPF	cal							Yes
lrs20009900_01	bias	23:23	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	23:24	20			VIRUS	cal							Yes
virus0009901_01	bias	23:25	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	23:26	20			LRS2	cal							Yes
virus0009902_01	dark	23:27	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	23:28	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	23:30	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	23:31	15			LRS2	cal							Yes
0061	Dark	23:34	319.5			HPF	cal							Yes
0062	Quartz FCU	23:41	74.5			HPF	cal							Yes
0063	Quartz FCU	23:43	74.5			HPF	cal							Yes
0064	Quartz FCU	23:45	74.5			HPF	cal							Yes
0065	Quartz FCU	23:46	74.5			HPF	cal							Yes
0066	Quartz FCU	23:48	74.5			HPF	cal							Yes
0067	Quartz FCU	23:50	74.5			HPF	cal							Yes
0068	Quartz FCU	23:52	74.5			HPF	cal							Yes
0069	Alpha Bright Cal	23:54	85.2			HPF	cal							Yes
0070	Alpha Bright Cal	23:56	85.2			HPF	cal							Yes
0071	Alpha Bright Cal	23:58	85.2			HPF	cal							Yes