HET Night Report Reader

Civil Date	Ephemerides
2026-07-20	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	02:05	02:57	03:31	10:33	11:08	12:00	-	05:51
Night Length	7:02		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
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
01:58	19.7	21.2	02:46	clouds	00:48
03:29	18.2	19.0	10:59	twilight	07:30
Total Time Open					8:18

Program	Night Priority	Science
03:31	Idle due to weather (cloudy)
04:45	Science
07:27	Idle due to weather (cloudy)
07:54	Science
08:25	Idle due to weather (poor transparency)
09:06	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
03:32	04:17	0.36	0.55	-409	+677	17.8	18.4	18.5	195	19	First of Night
10:51	10:58	0.62	1.00	-570	+1204	18.7	18.7	18.6	190	15	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6692	05:00-05:00	00:00	According to TCS GUI, WFS2 is enabled
6691	05:00-05:00	00:00	New chiller UI showed AHUs running all night despite system being disabled; ahu sound heard over speakers

Ops Comments	none

TO Comments	Partly cloudy and calm night with higher humidity.

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 Cal	01:57	106.5			HPF	cal							Yes
lrs20000001_01	skyflat	02:11	7			LRS2	cal							Yes
lrs20000002_01	skyflat	02:12	10			LRS2	cal							Yes
lrs20000003_01	skyflat	02:13	13			LRS2	cal							Yes
lrs20000004_01	skyflat	02:14	16			LRS2	cal							Yes
lrs20000005_01	skyflat	02:15	22			LRS2	cal							Yes
lrs20000006_01	skyflat	02:17	30			LRS2	cal							Yes
virus0000001_01	skyflat	02:21	7			VIRUS	cal							Yes
virus0000002_01	skyflat	02:22	10			VIRUS	cal							Yes
virus0000003_01	skyflat	02:23	14			VIRUS	cal							Yes
virus0000004_01	skyflat	02:25	18			VIRUS	cal							Yes
virus0000005_01	skyflat	02:26	26			VIRUS	cal							Yes
0002	LFC Cal	02:57	106.5			HPF	cal							Yes
lrs20000007_01	1732526_056_E	04:42	180	6.0		LRS2	spec	1.74		20.36	0.09			No
lrs20000008_01	1732526_066_E	04:49	120	4.0		LRS2	spec	1.52		20.09	0.23			Yes
lrs20000009_01	1732526_056_E	04:55	180	4.0		LRS2	spec	1.47		21.10	0.74			Yes
virus0000006_01	parallel	05:03	2000			VIRUS	sci							Yes
0003	parallel	05:04	969.1	5.8	PSU26-2-015	HPF	sci	1.35		20.28	0.87	182		Yes
0004	parallel	05:21	969.1	0.8	PSU26-2-015	HPF	sci	1.32		20.45	0.87	180		Yes
0005	LFC Cal	05:39	106.5			HPF	cal							Yes
0006	LFC Cal	05:44	106.5			HPF	cal							Yes
virus0000007_01	parallel	05:44	1500			VIRUS	sci							Yes
lrs20000010_01	parallel	05:44	1500	7.0	PSU26-2-004	LRS2-B	sci	1.31		21.94	0.76		Started with blind (incorrect) observing setup, so first couple minutes of exposure were imprecise. Took another exposure to make up signal lost. Please review data quality and reject if needed.	Yes
0007	LFC Cal	05:47	106.5			HPF	cal							Yes
0008	LFC Cal	05:49	106.5			HPF	cal							Yes
0009	LFC Cal	05:52	106.5			HPF	cal							Yes
0010	LFC Cal	05:54	106.5			HPF	cal							Yes
0011	LFC Cal	05:56	106.5			HPF	cal							Yes
0012	LFC Cal	05:59	106.5			HPF	cal							Yes
virus0000008_01	parallel	06:10	1500			VIRUS	sci							Yes
lrs20000011_01	parallel	06:10	431	0.8	PSU26-2-004	LRS2-B	sci	1.36		21.98	0.79			Yes
0013	LFC Cal	06:22	106.5			HPF	cal							Yes
virus0000009_01	parallel	06:22	1800			VIRUS	sci							Yes
lrs20000012_01	parallel	06:22	1800	5.0	UT26-2-003	LRS2-R	sci	1.30		21.25	0.83			Yes
0014	LFC Cal	06:24	106.5			HPF	cal							Yes
0015	LFC Cal	06:27	106.5			HPF	cal							Yes
0016	LFC Cal	06:57	106.5			HPF	cal							Yes
virus0000010_01	parallel	06:57	1800			VIRUS	sci							Yes
lrs20000013_01	parallel	06:57	1800	5.0	UT26-2-003	LRS2-B	sci	1.33		22.01	0.59			Yes
0017	LFC Cal	06:59	106.5			HPF	cal							Yes
0018	LFC Cal	07:02	106.5			HPF	cal							Yes
virus0000011_01	parallel	07:59	712.5			VIRUS	sci							Yes
0019	parallel	08:00	671	5.8	UT26-2-009	HPF	sci	1.34		20.65	0.84	267		P4
0020	HR8342_tell_std	08:19	330.2	8.5		HPF	telluric	1.19		20.68	0.80			Yes
0021	parallel	08:32	969.1	6.8	UT26-2-007	HPF	sci	1.32		20.23	0.39	36	poor transparency	No
virus0000012_01	parallel	08:32	2000			VIRUS	sci							Yes
0022	parallel	08:49	969.1	1.8	UT26-2-007	HPF	sci	1.31		20.39	0.92	44		No
0023	LFC Cal	09:19	106.5			HPF	cal							Yes
virus0000013_01	parallel	09:19	3000			VIRUS	sci							Yes
lrs20000014_01	parallel	09:19	3000	13.0	UT26-2-003	LRS2-B	sci	1.33		21.81	0.86		Started w/ blind setup, but 2 images of supernova not centered on LRS2B fiducial. Offset so center of fid. directly in between both images. Hit end of track w/ 1 min left.	Yes
0024	LFC Cal	09:21	106.5			HPF	cal							Yes
0025	LFC Cal	09:24	106.5			HPF	cal							Yes
0026	parallel	10:15	969.1	5.8	UT26-2-007	HPF	sci	1.29		20.39	0.80	14		Yes
virus0000014_01	parallel	10:15	2000			VIRUS	sci							Yes
0027	parallel	10:32	969.1	0.8	UT26-2-007	HPF	sci	1.29		20.40	0.76	15		Yes
lrs20000015_01	bias	10:50	0			LRS2	cal							Yes
virus0000015_01	bias	10:51	0			VIRUS	cal							Yes
virus0000016_01	Cd-A	10:55	15		ENG26-2-002	VIRUS	cal							Yes
virus0000017_01	Hg	10:57	15		ENG26-2-002	VIRUS	cal							Yes
0028	Dark	11:03	319.5			HPF	cal							Yes
0029	Dark	11:10	319.5			HPF	cal							Yes
0030	Quartz FCU	11:22	74.5			HPF	cal							Yes
0031	Quartz FCU	11:23	74.5			HPF	cal							Yes
0032	Quartz FCU	11:25	74.5			HPF	cal							Yes
0033	Quartz FCU	11:27	74.5			HPF	cal							Yes
0034	Quartz FCU	11:29	74.5			HPF	cal							Yes
0035	Quartz FCU	11:31	74.5			HPF	cal							Yes
0036	Quartz FCU	11:32	74.5			HPF	cal							Yes
0037	Alpha Bright Cal	11:35	85.2			HPF	cal							Yes
0038	Alpha Bright Cal	11:37	85.2			HPF	cal							Yes
0039	Alpha Bright Cal	11:39	85.2			HPF	cal							Yes
0040	Alpha Bright Cal	11:40	85.2			HPF	cal							Yes
0041	LFC FCU	11:43	106.5			HPF	cal							Yes
0042	LFC FCU	11:45	106.5			HPF	cal							Yes
0043	LFC FCU	11:48	106.5			HPF	cal							Yes
0044	LFC FCU	11:50	106.5			HPF	cal							Yes
0045	LFC FCU	11:52	106.5			HPF	cal							Yes
0046	LFC FCU	11:55	106.5			HPF	cal							Yes
0047	LFC Cal	11:58	106.5			HPF	cal							Yes
0048	LFC Cal	12:00	106.5			HPF	cal							Yes
0049	Etalon Cal	12:08	159.8			HPF	cal							Yes
0050	Etalon Cal	12:11	159.8			HPF	cal							Yes
0051	Etalon Cal	12:14	159.8			HPF	cal							Yes
0052	Etalon Cal	12:17	159.8			HPF	cal							Yes
0053	UNe Slave Cal	12:21	426			HPF	cal							Yes
0054	UNe Slave Cal	12:29	426			HPF	cal							Yes
0055	UNe Slave Cal	12:36	426			HPF	cal							Yes
0056	UNe Slave Cal	12:44	426			HPF	cal							Yes
0057	UNe Slave Cal	12:52	426			HPF	cal							Yes
0058	UNe Slave Cal	13:00	426			HPF	cal							Yes
0063	LFC Cal	21:44	106.5			HPF	cal							Yes
lrs20009929_01	bias	21:54	0			LRS2	cal							Yes
virus0009927_01	flat_Qth	21:55	20			VIRUS	cal							Yes
virus0009928_01	bias	21:56	0			VIRUS	cal							Yes
lrs20009930_01	flat_ldls_long_B	21:57	20			LRS2	cal							Yes
virus0009929_01	dark	21:58	15			VIRUS	cal							Yes
lrs20009931_01	Cd-A_B	21:59	29			LRS2	cal							Yes
lrs20009932_01	FeAr_R	22:01	15			LRS2	cal							Yes
lrs20009933_01	Hg_B	22:02	15			LRS2	cal							Yes
0064	Dark	22:05	319.5			HPF	cal							Yes
0065	Quartz FCU	22:12	74.5			HPF	cal							Yes
0066	Quartz FCU	22:13	74.5			HPF	cal							Yes
0067	Quartz FCU	22:15	74.5			HPF	cal							Yes
0068	Quartz FCU	22:17	74.5			HPF	cal							Yes
0069	Quartz FCU	22:19	74.5			HPF	cal							Yes
0070	Quartz FCU	22:20	74.5			HPF	cal							Yes
0071	Quartz FCU	22:22	74.5			HPF	cal							Yes
0072	Alpha Bright Cal	22:25	85.2			HPF	cal							Yes
0073	Alpha Bright Cal	22:26	85.2			HPF	cal							Yes
0074	Alpha Bright Cal	22:28	85.2			HPF	cal							Yes
0075	Alpha Bright Cal	22:30	85.2			HPF	cal							Yes
0076	LFC FCU	22:33	106.5			HPF	cal							Yes
0077	LFC FCU	22:35	106.5			HPF	cal							Yes
0078	LFC Cal	22:38	106.5			HPF	cal							Yes
0079	LFC Cal	22:40	106.5			HPF	cal							Yes
0080	Etalon Cal	22:43	159.8			HPF	cal							Yes
0081	UNe Slave Cal	22:47	426			HPF	cal							Yes
lrs20000010_01	flat_Qth_R	22:48	15			LRS2	cal							Yes
lrs20000010_02	flat_Qth_R	22:49	15			LRS2	cal							Yes
lrs20000010_03	flat_Qth_R	22:51	15			LRS2	cal							Yes
lrs20000010_04	flat_Qth_R	22:52	15			LRS2	cal							Yes
lrs20000010_05	flat_Qth_R	22:53	15			LRS2	cal							Yes
lrs20000011_01	flat_ldls_long_B	22:54	20			LRS2	cal							Yes
0082	UNe Slave Cal	22:55	426			HPF	cal							Yes
lrs20000011_02	flat_ldls_long_B	22:56	20			LRS2	cal							Yes
lrs20000011_03	flat_ldls_long_B	22:57	20			LRS2	cal							Yes
lrs20000012_01	Cd-A_B	22:58	29			LRS2	cal							Yes
lrs20000012_02	Cd-A_B	23:00	29			LRS2	cal							Yes
lrs20000012_03	Cd-A_B	23:01	29			LRS2	cal							Yes
0083	UNe Slave Cal	23:02	426			HPF	cal							Yes
lrs20000013_01	FeAr_R	23:03	15			LRS2	cal							Yes
lrs20000013_02	FeAr_R	23:04	15			LRS2	cal							Yes
lrs20000013_03	FeAr_R	23:05	15			LRS2	cal							Yes
lrs20000014_01	Hg_R	23:06	20			LRS2	cal							Yes
lrs20000014_02	Hg_R	23:08	20			LRS2	cal							Yes
lrs20000014_03	Hg_R	23:09	20			LRS2	cal							Yes
0084	UNe Slave Cal	23:10	426			HPF	cal							Yes
lrs20000015_01	Hg_B	23:10	15			LRS2	cal							Yes
lrs20000015_02	Hg_B	23:12	15			LRS2	cal							Yes
lrs20000015_03	Hg_B	23:13	15			LRS2	cal							Yes
0085	UNe Slave Cal	23:18	426			HPF	cal							Yes
virus0000009_01	flat_ldls_long	23:19	15			VIRUS	cal							Yes
virus0000009_02	flat_ldls_long	23:21	15			VIRUS	cal							Yes
virus0000009_03	flat_ldls_long	23:22	15			VIRUS	cal							Yes
virus0000010_01	Cd-A	23:24	15			VIRUS	cal							Yes
virus0000010_02	Cd-A	23:25	15			VIRUS	cal							Yes
0086	UNe Slave Cal	23:26	426			HPF	cal							Yes
virus0000010_03	Cd-A	23:26	15			VIRUS	cal							Yes
virus0000011_01	Hg	23:28	15			VIRUS	cal							Yes
virus0000011_02	Hg	23:29	15			VIRUS	cal							Yes
virus0000011_03	Hg	23:31	15			VIRUS	cal							Yes
lrs20000016_01	bias	23:32	0			LRS2	cal							Yes
virus0000012_01	bias	23:32	0			VIRUS	cal							Yes
lrs20000016_02	bias	23:33	0			LRS2	cal							Yes
virus0000012_02	bias	23:33	0			VIRUS	cal							Yes
lrs20000016_03	bias	23:34	0			LRS2	cal							Yes
virus0000012_03	bias	23:34	0			VIRUS	cal							Yes
lrs20000016_04	bias	23:34	0			LRS2	cal							Yes
virus0000012_04	bias	23:35	0			VIRUS	cal							Yes
lrs20000016_05	bias	23:35	0			LRS2	cal							Yes
virus0000012_05	bias	23:36	0			VIRUS	cal							Yes
lrs20000016_06	bias	23:36	0			LRS2	cal							Yes
virus0000012_06	bias	23:36	0			VIRUS	cal							Yes
lrs20000016_07	bias	23:37	0			LRS2	cal							Yes
virus0000012_07	bias	23:37	0			VIRUS	cal							Yes
lrs20000016_08	bias	23:38	0			LRS2	cal							Yes
virus0000012_08	bias	23:38	0			VIRUS	cal							Yes
lrs20000016_09	bias	23:39	0			LRS2	cal							Yes
virus0000012_09	bias	23:39	0			VIRUS	cal							Yes
lrs20000016_10	bias	23:39	0			LRS2	cal							Yes
virus0000012_10	bias	23:40	0			VIRUS	cal							Yes
lrs20000016_11	bias	23:40	0			LRS2	cal							Yes
virus0000012_11	bias	23:41	0			VIRUS	cal							Yes
lrs20000017_01	dark	23:41	360			LRS2	cal							Yes
virus0000013_01	dark	23:41	360			VIRUS	cal							Yes
lrs20000017_02	dark	23:48	360			LRS2	cal							Yes
virus0000013_02	dark	23:48	360			VIRUS	cal							Yes
lrs20000017_03	dark	23:55	360			LRS2	cal							Yes
virus0000013_03	dark	23:55	360			VIRUS	cal							Yes

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