HET Night Report Reader

Civil Date	Ephemerides
2026-02-25	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	00:59	01:44	02:12	12:05	12:33	13:19	-	09:52
Night Length	9:53		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Zach Vanderbosch	Cassie Crowe

Overlaps		none

Other Personnel	none

Guests	Aiden Dillard (new TO)

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
00:54	18.9	18.1	03:52	clouds	02:58
05:43	16.0	16.0	12:31	twilight	06:48
Total Time Open					9:46

Program	Night Priority	Science
02:12	Science
03:33	Idle due to weather (Clouds, dust)
05:45	Science
05:58	Idle due to weather (Clouds)
06:40	Science
06:58	Idle due to weather (Clouds)
07:37	Science
08:17	Idle due to weather (Poor IQ)
08:19	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:24	01:59	0.74	1.42	90	-6276	18.1	18.2	18.2	288	23	First of Night
08:19	08:54	0.56	1.06	75	-4445	14.4	15.1	15.2	295	21	Stack/Re-stack
12:23	12:28	0.64	1.31	-20	-4634	14.4	15.0	14.9	325	22	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6627	02:15-02:20, 02:35-02:40, 03:00-03:10, 09:15-09:40, 11:05-11:10, 11:20-11:25, 11:45-11:50, 12:10-12:15, 12:25-12:30	01:10	Random 1.0 micron dust spikes.

TO Comments	High winds, clouds and one period of real dust.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000025_01	Hg_B	00:00	15			LRS2	cal							Yes
0001	UNe Slave Cal	00:01	426			HPF	cal							Yes
lrs20000025_02	Hg_B	00:01	15			LRS2	cal							Yes
lrs20000025_03	Hg_B	00:03	15			LRS2	cal							Yes
0002	UNe Slave Cal	00:08	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	00:09	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	00:11	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	00:12	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	00:14	15			VIRUS	cal							Yes
virus0000002_02	Cd-A	00:15	15			VIRUS	cal							Yes
0003	UNe Slave Cal	00:16	426			HPF	cal							Yes
virus0000002_03	Cd-A	00:16	15			VIRUS	cal							Yes
virus0000003_01	Hg	00:18	15			VIRUS	cal							Yes
virus0000003_02	Hg	00:19	15			VIRUS	cal							Yes
virus0000003_03	Hg	00:21	15			VIRUS	cal							Yes
lrs20000001_01	dark	00:22	360			LRS2	cal							Yes
virus0000004_01	dark	00:22	360			VIRUS	cal							Yes
lrs20000001_02	dark	00:29	360			LRS2	cal							Yes
virus0000004_02	dark	00:29	360			VIRUS	cal							Yes
lrs20000001_03	dark	00:35	360			LRS2	cal							Yes
virus0000004_03	dark	00:36	360			VIRUS	cal							Yes
lrs20000002_01	skyflat	01:03	7			LRS2	cal							Yes
lrs20000003_01	skyflat	01:04	10			LRS2	cal							Yes
lrs20000004_01	skyflat	01:05	13			LRS2	cal							Yes
lrs20000005_01	skyflat	01:07	16			LRS2	cal							Yes
lrs20000006_01	skyflat	01:08	22			LRS2	cal							Yes
lrs20000007_01	skyflat	01:09	30			LRS2	cal							Yes
virus0000005_01	skyflat	01:12	7			VIRUS	cal							Yes
virus0000006_01	skyflat	01:13	10			VIRUS	cal							Yes
virus0000007_01	skyflat	01:14	14			VIRUS	cal							Yes
virus0000008_01	skyflat	01:16	18			VIRUS	cal							Yes
virus0000009_01	skyflat	01:17	26			VIRUS	cal							Yes
lrs20000008_01	bias	01:19	0			LRS2	cal							Yes
virus0000010_01	bias	01:20	0			VIRUS	cal							Yes
lrs20000008_02	bias	01:20	0			LRS2	cal							Yes
virus0000010_02	bias	01:20	0			VIRUS	cal							Yes
lrs20000008_03	bias	01:21	0			LRS2	cal							Yes
virus0000010_03	bias	01:21	0			VIRUS	cal							Yes
lrs20000008_04	bias	01:22	0			LRS2	cal							Yes
virus0000010_04	bias	01:22	0			VIRUS	cal							Yes
lrs20000008_05	bias	01:23	0			LRS2	cal							Yes
virus0000010_05	bias	01:23	0			VIRUS	cal							Yes
lrs20000008_06	bias	01:24	0			LRS2	cal							Yes
virus0000010_06	bias	01:24	0			VIRUS	cal							Yes
lrs20000008_07	bias	01:25	0			LRS2	cal							Yes
virus0000010_07	bias	01:25	0			VIRUS	cal							Yes
lrs20000008_08	bias	01:25	0			LRS2	cal							Yes
virus0000010_08	bias	01:26	0			VIRUS	cal							Yes
lrs20000008_09	bias	01:26	0			LRS2	cal							Yes
virus0000010_09	bias	01:27	0			VIRUS	cal							Yes
lrs20000008_10	bias	01:27	0			LRS2	cal							Yes
virus0000010_10	bias	01:27	0			VIRUS	cal							Yes
lrs20000008_11	bias	01:28	0			LRS2	cal							Yes
virus0000010_11	bias	01:28	0			VIRUS	cal							Yes
virus0000011_01	parallel	02:14	891			VIRUS	sci							Yes
0004	QID 2760	02:15	841.4	9.0	UT26-1-014	HPF	sci	1.73	0.93	17.95	0.68	368		P4
0005	LFC Cal	02:31	106.5			HPF	cal							Yes
virus0000012_01	parallel	02:36	2047			VIRUS	sci							Yes
0006	QID 2668	02:37	969.1	7.8	UT26-1-003	HPF	sci	1.68	0.67	18.77	0.77	16		P4
0007	QID 2668	02:54	969.1	0.8	UT26-1-003	HPF	sci	1.60	0.99	18.07	0.59	16		P4
virus0000013_01	parallel	03:16	1023			VIRUS	sci							Yes
0008	QID 2788	03:17	969.1	6.8	UT26-1-014	HPF	sci	1.54	0.91	18.82	0.63	247		P4
0009	LFC Cal	03:35	106.5			HPF	cal							Yes
0010	QID 2789	03:39	969.1	6.8	UT26-1-014	HPF	sci	1.44		18.04	0.31	99	Clouds, low transparency. Dome closed about halfway through exposure for dust.	No
virus0000014_01	parallel	03:39	1023			VIRUS	sci							Yes
0011	LFC Cal	03:57	106.5			HPF	cal							Yes
0012	LFC Cal	04:56	106.5			HPF	cal							Yes
0013	LFC Cal	04:59	106.5			HPF	cal							Yes
0014	LFC Cal	05:01	106.5			HPF	cal							Yes
0015	HR2783_tell_std	05:53	330.2	7.5		HPF	telluric	2.11	1.23	16.96	0.21			Yes
0016	QID 403	06:07	969.1	8.8	UT26-1-003	HPF	sci	2.51	2.01	18.06	0.23	14	Clouds, low transparency.	No
virus0000015_01	parallel	06:07	2047			VIRUS	sci							Yes
0017	QID 403	06:24	969.1	0.8	UT26-1-003	HPF	sci	2.23	1.77	18.78	0.52	23		No
lrs20000009_01	QID 2893	06:45	180	5.0	UT26-1-016	LRS2-B	sci	2.28	1.87	19.42	0.65			P4
0018	LFC Cal	06:46	106.5			HPF	cal							Yes
0019	LFC Cal	06:52	106.5			HPF	cal							Yes
virus0000016_01	parallel	06:52	360			VIRUS	sci							Yes
lrs20000010_01	QID 2894	06:52	360	4.0	UT26-1-016	LRS2-R	sci	2.10	1.85	19.51	0.73			P4
0020	LFC Cal	06:55	106.5			HPF	cal							Yes
virus0000017_01	parallel	07:03	2047			VIRUS	sci							Yes
0021	QID 2670	07:04	969.1	5.8	UT26-1-003	HPF	sci	2.24	1.69	18.78	0.43	14	Clouds, low transparency.	No
0022	QID 2670	07:21	969.1	0.8	UT26-1-003	HPF	sci	2.22		19.15	0.57	13		No
0023	QID 2588	07:44	969.1	6.8	UT26-1-003	HPF	sci	2.36		19.43	0.79	16		P4
virus0000018_01	parallel	07:44	2047			VIRUS	sci							Yes
0024	QID 2588	08:01	969.1	0.8	UT26-1-003	HPF	sci	2.22		19.80	0.89	19		P4
lrs20000011_01	QID 2895	08:59	180	5.0	UT26-1-016	LRS2-B	sci	1.56	0.91	20.27	0.98			P4
0025	LFC Cal	09:00	106.5			HPF	cal							Yes
0026	LFC Cal	09:06	106.5			HPF	cal							Yes
virus0000019_01	parallel	09:06	360			VIRUS	sci							Yes
lrs20000012_01	QID 2896	09:06	360	4.0	UT26-1-016	LRS2-R	sci	1.52	0.95	19.95	1.14			P4
0027	LFC Cal	09:09	106.5			HPF	cal							Yes
0028	LFC Cal	09:17	106.5			HPF	cal							Yes
lrs20000013_01	QID 2905	09:17	180	5.0	UT26-1-016	LRS2-B	sci	1.52	1.02	20.27	0.91			P4
virus0000020_01	parallel	09:23	360			VIRUS	sci							Yes
lrs20000014_01	QID 2906	09:23	360	3.0	UT26-1-016	LRS2-R	sci	1.56	0.85	20.10	0.99			P4
0029	LFC Cal	09:24	106.5			HPF	cal							Yes
0030	LFC Cal	09:26	106.5			HPF	cal							Yes
lrs20000015_01	FEIGE34_056_W	09:35	60	6.0		LRS2	spec	1.50	1.06	20.82	0.97			Yes
lrs20000016_01	FEIGE34_066_W	09:40	60	4.0		LRS2	spec	1.41	1.08	20.39	0.91			Yes
0031	QID 2551	09:46	969.1	5.8	PSU26-1-019	HPF	sci	1.37	1.06	19.97	1.05	235		Yes
virus0000021_01	parallel	09:46	2047			VIRUS	sci							Yes
0032	QID 2551	10:04	969.1	0.8	PSU26-1-019	HPF	sci	1.51	1.14	20.01	0.97	247		Yes
0033	LFC Cal	10:21	106.5			HPF	cal							Yes
0034	LFC Cal	10:24	106.5			HPF	cal							Yes
lrs20000017_01	parallel	10:24	360			LRS2	sci							Yes
virus0000022_01	QID 1986	10:24	360	4.0	UT26-1-008	VIRUS	sci	1.94	1.35	21.58	0.86			Yes
0035	LFC Cal	10:27	106.5			HPF	cal							Yes
lrs20000017_02	parallel	10:31	360			LRS2	sci							Yes
virus0000022_02	QID 1986	10:31	360	1.0	UT26-1-008	VIRUS	sci	1.93	1.46	21.52	0.78			Yes
lrs20000017_03	parallel	10:39	360			LRS2	sci							Yes
virus0000022_03	QID 1986	10:39	360	2.0	UT26-1-008	VIRUS	sci	1.98	1.77	21.52	0.77			Yes
0036	LFC Cal	10:50	106.5			HPF	cal							Yes
lrs20000018_01	QID 2907	10:50	180	5.0	UT26-1-016	LRS2-B	sci	2.22	1.94	21.50	0.82		Several fibers are saturating the CCD. Please check your exposure times for bright targets.	P4
0037	LFC Cal	10:56	106.5			HPF	cal							Yes
virus0000023_01	parallel	10:56	360			VIRUS	sci							Yes
lrs20000019_01	QID 2908	10:56	360	3.0	UT26-1-016	LRS2-R	sci	2.19	1.96	20.55	0.92			P4
0038	LFC Cal	10:59	106.5			HPF	cal							Yes
0039	QID 1507	11:08	969.1	6.8	UT26-1-010	HPF	sci	1.83	1.29	19.84	0.93	117		Yes
virus0000024_01	parallel	11:08	2047			VIRUS	sci							Yes
0040	QID 1507	11:25	969.1	0.8	UT26-1-010	HPF	sci	1.54	1.04	19.97	0.90	153		Yes
0041	LFC Cal	11:43	106.5			HPF	cal							Yes
virus0000025_01	parallel	11:47	2047			VIRUS	sci							Yes
0042	QID 1504	11:48	969.1	5.8	UT26-1-010	HPF	sci	1.80	1.54	19.91	0.75	66		Yes
0043	QID 1504	12:05	969.1	0.8	UT26-1-010	HPF	sci	1.69	1.33	19.87	0.84	89		Yes
0044	LFC Cal	12:23	106.5			HPF	cal							Yes
lrs20000020_01	bias	12:24	0			LRS2	cal							Yes
virus0000026_01	bias	12:24	0			VIRUS	cal							Yes
virus0000027_01	Cd-A	12:29	15		ENG26-1-002	VIRUS	cal							Yes
virus0000028_01	Hg	12:30	15		ENG26-1-002	VIRUS	cal							Yes
0045	Dark	12:40	319.5			HPF	cal							Yes
0046	Quartz FCU	12:51	74.5			HPF	cal							Yes
0047	Quartz FCU	12:53	74.5			HPF	cal							Yes
0048	Quartz FCU	12:55	74.5			HPF	cal							Yes
0049	Quartz FCU	12:57	74.5			HPF	cal							Yes
0050	Quartz FCU	12:58	74.5			HPF	cal							Yes
0051	Quartz FCU	13:00	74.5			HPF	cal							Yes
0052	Quartz FCU	13:02	74.5			HPF	cal							Yes
0053	Alpha Bright Cal	13:04	85.2			HPF	cal							Yes
0054	Alpha Bright Cal	13:06	85.2			HPF	cal							Yes
0055	Alpha Bright Cal	13:08	85.2			HPF	cal							Yes
0056	Alpha Bright Cal	13:10	85.2			HPF	cal							Yes
0057	LFC FCU	13:13	106.5			HPF	cal							Yes
0058	LFC FCU	13:15	106.5			HPF	cal							Yes
0059	LFC FCU	13:17	106.5			HPF	cal							Yes
0060	LFC FCU	13:20	106.5			HPF	cal							Yes
0061	LFC FCU	13:22	106.5			HPF	cal							Yes
0062	LFC FCU	13:24	106.5			HPF	cal							Yes
0063	LFC Cal	13:27	106.5			HPF	cal							Yes
0064	LFC Cal	13:30	106.5			HPF	cal							Yes
0065	Etalon Cal	13:37	159.8			HPF	cal							Yes
0066	Etalon Cal	13:40	159.8			HPF	cal							Yes
0067	Etalon Cal	13:44	159.8			HPF	cal							Yes
0068	Etalon Cal	13:47	159.8			HPF	cal							Yes
0069	UNe Slave Cal	13:50	426			HPF	cal							Yes
0070	UNe Slave Cal	13:58	426			HPF	cal							Yes
0071	UNe Slave Cal	14:06	426			HPF	cal							Yes
0072	UNe Slave Cal	14:14	426			HPF	cal							Yes
0073	UNe Slave Cal	14:21	426			HPF	cal							Yes
0074	UNe Slave Cal	14:29	426			HPF	cal							Yes
0073	LFC Cal	22:29	106.5			HPF	cal							Yes
lrs20009900_01	bias	22:40	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:41	20			VIRUS	cal							Yes
virus0009901_01	bias	22:42	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:43	20			LRS2	cal							Yes
virus0009902_01	dark	22:44	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:45	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:47	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:48	15			LRS2	cal							Yes
0074	Dark	22:55	319.5			HPF	cal							Yes
0075	Quartz FCU	23:02	74.5			HPF	cal							Yes
0076	Quartz FCU	23:04	74.5			HPF	cal							Yes
0077	Quartz FCU	23:05	74.5			HPF	cal							Yes
0078	Quartz FCU	23:07	74.5			HPF	cal							Yes
0079	Quartz FCU	23:09	74.5			HPF	cal							Yes
0080	Quartz FCU	23:11	74.5			HPF	cal							Yes
0081	Quartz FCU	23:13	74.5			HPF	cal							Yes
0082	Alpha Bright Cal	23:15	85.2			HPF	cal							Yes
0083	Alpha Bright Cal	23:17	85.2			HPF	cal							Yes
0084	Alpha Bright Cal	23:19	85.2			HPF	cal							Yes
0085	Alpha Bright Cal	23:21	85.2			HPF	cal							Yes
0086	LFC FCU	23:23	106.5			HPF	cal							Yes
0087	LFC FCU	23:26	106.5			HPF	cal							Yes
0088	LFC Cal	23:29	106.5			HPF	cal							Yes
0089	LFC Cal	23:31	106.5			HPF	cal							Yes
0090	Etalon Cal	23:33	159.8			HPF	cal							Yes
0091	UNe Slave Cal	23:37	426			HPF	cal							Yes
lrs20000020_01	flat_Qth_R	23:38	15			LRS2	cal							Yes
lrs20000020_02	flat_Qth_R	23:39	15			LRS2	cal							Yes
lrs20000020_03	flat_Qth_R	23:41	15			LRS2	cal							Yes
lrs20000020_04	flat_Qth_R	23:42	15			LRS2	cal							Yes
lrs20000020_05	flat_Qth_R	23:43	15			LRS2	cal							Yes
lrs20000021_01	flat_ldls_long_B	23:44	20			LRS2	cal							Yes
0092	UNe Slave Cal	23:45	426			HPF	cal							Yes
lrs20000021_02	flat_ldls_long_B	23:46	20			LRS2	cal							Yes
lrs20000021_03	flat_ldls_long_B	23:47	20			LRS2	cal							Yes
lrs20000022_01	Cd-A_B	23:48	29			LRS2	cal							Yes
lrs20000022_02	Cd-A_B	23:50	29			LRS2	cal							Yes
lrs20000022_03	Cd-A_B	23:51	29			LRS2	cal							Yes
0093	UNe Slave Cal	23:53	426			HPF	cal							Yes
lrs20000023_01	FeAr_R	23:53	15			LRS2	cal							Yes
lrs20000023_02	FeAr_R	23:54	15			LRS2	cal							Yes
lrs20000023_03	FeAr_R	23:55	15			LRS2	cal							Yes
lrs20000024_01	Hg_R	23:56	20			LRS2	cal							Yes
lrs20000024_02	Hg_R	23:58	20			LRS2	cal							Yes
lrs20000024_03	Hg_R	23:59	20			LRS2	cal							Yes