HET Night Report Reader

Civil Date	Ephemerides
2026-06-15	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	02:08	03:01	03:38	10:15	10:51	11:45	-	03:05
Night Length	6:37		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
Tyler Ryburn	Aiden Dillard	-	-

Overlaps
TO Overlap	RA Overlap
-	Jose Fernandez

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
04:27	17.7	17.8	04:55	dew point	00:28
05:28	17.6	18.1	06:58	clouds	01:30
07:29	17.4	17.9	07:55	humidity	00:26
Total Time Open					2:24

Program	Night Priority	Science
03:38	Idle due to weather (radar / dew point)
06:06	Science
06:28	Idle due to weather (clouds, humidity)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
04:39	04:55					17.5	18.0	17.8	105	2	First of Night
↪ Comments			Tracker temperature came too close to the external dew point. Tracker temperature did not acclimate at the same rate as the internal and truss temperatures with the external temperature when the dome was open. Tracker temperature decreased, instead.
05:31	05:55	0.41	0.63	-390	+1711	17.5	18.1	18.1	170	9	Stack/Re-stack
↪ Comments			Tracker temperature issue

Problem Reports
PR Number	Times	Time Lost	Description	Response
6685	04:55-05:28	00:33	Tracker temperature seemingly providing false readings, triggering dew point alarm to close dome.	Visually inspected tracker for condensation, observed the tracker temperature fluctuations compared to internal, external, and truss with the dome open and closed. Reopened dome and continued with stack and moving on sky.

Ops Comments	none

TO Comments	Partially cloudy and humid for most of the night. Only able to attempt to observe a couple targets. Did not perform post-observing stack due to radar overhead.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000021_03	dark	00:04	360			LRS2	cal							Yes
virus0000014_03	dark	00:04	360			VIRUS	cal							Yes
0001	LFC Cal	02:05	106.5			HPF	cal							Yes
0002	LFC Cal	02:07	106.5			HPF	cal							Yes
0003	LFC Cal	02:09	106.5			HPF	cal							Yes
0004	LFC Cal	04:28	106.5			HPF	cal							Yes
0005	LFC Cal	04:31	106.5			HPF	cal							Yes
0006	LFC Cal	04:33	106.5			HPF	cal							Yes
0007	QID 110	06:11	969.1	5.8	UT26-2-019	HPF	sci	1.35		20.29	0.59	267		Yes
virus0000001_01	parallel	06:11	1000			VIRUS	sci							Yes
0008	LFC Cal	06:29	106.5			HPF	cal							Yes
lrs20000001_01	parallel	06:34	360			LRS2	sci							Yes
virus0000002_01	QID 985	06:34	360	6.0	UT26-2-016	VIRUS	sci	1.32		21.74	0.09		clouds	No
0009	LFC Cal	06:35	106.5			HPF	cal							Yes
0010	LFC Cal	06:37	106.5			HPF	cal							Yes
lrs20000001_02	parallel	06:41	360			LRS2	sci							Yes
virus0000002_02	QID 985	06:41	360	1.0	UT26-2-016	VIRUS	sci	1.37		21.76	0.06			No
lrs20000001_03	parallel	06:49	360			LRS2	sci							Yes
virus0000002_03	QID 985	06:49	360	2.0	UT26-2-016	VIRUS	sci							No
0011	LFC Cal	07:34	106.5			HPF	cal							Yes
lrs20000002_01	parallel	07:34	360			LRS2	sci							Yes
virus0000003_01	QID 999	07:34	360	3.0	UT26-2-016	VIRUS	sci	1.46		21.85	0.51		clouds	No
0012	LFC Cal	07:37	106.5			HPF	cal							Yes
lrs20000002_02	parallel	07:41	360			LRS2	sci							Yes
virus0000003_02	QID 999	07:41	360	1.0	UT26-2-016	VIRUS	sci	1.39		21.87	0.53			No
lrs20000002_03	parallel	07:49	360			LRS2	sci							Yes
virus0000003_03	QID 999	07:49	360	2.0	UT26-2-016	VIRUS	sci	1.29		21.83	0.26			No
0013	LFC Cal	09:06	106.5			HPF	cal							Yes
0014	LFC Cal	09:09	106.5			HPF	cal							Yes
0015	LFC Cal	09:11	106.5			HPF	cal							Yes
lrs20000003_01	bias	09:56	0			LRS2	cal							Yes
virus0000004_01	bias	09:56	0			VIRUS	cal							Yes
virus0000005_01	Cd-A	10:01	15		ENG26-2-002	VIRUS	cal							Yes
virus0000006_01	Hg	10:02	15		ENG26-2-002	VIRUS	cal							Yes
0016	Dark	10:10	319.5			HPF	cal							Yes
0017	Quartz FCU	10:21	74.5			HPF	cal							Yes
0018	Quartz FCU	10:23	74.5			HPF	cal							Yes
0019	Quartz FCU	10:25	74.5			HPF	cal							Yes
0020	Quartz FCU	10:27	74.5			HPF	cal							Yes
0021	Quartz FCU	10:29	74.5			HPF	cal							Yes
0022	Quartz FCU	10:30	74.5			HPF	cal							Yes
0023	Quartz FCU	10:32	74.5			HPF	cal							Yes
0024	Alpha Bright Cal	10:34	85.2			HPF	cal							Yes
0025	Alpha Bright Cal	10:36	85.2			HPF	cal							Yes
0026	Alpha Bright Cal	10:38	85.2			HPF	cal							Yes
0027	Alpha Bright Cal	10:40	85.2			HPF	cal							Yes
0028	LFC FCU	10:43	106.5			HPF	cal							Yes
0029	LFC FCU	10:45	106.5			HPF	cal							Yes
0030	LFC FCU	10:48	106.5			HPF	cal							Yes
0031	LFC FCU	10:50	106.5			HPF	cal							Yes
0032	LFC FCU	10:52	106.5			HPF	cal							Yes
0033	LFC FCU	10:55	106.5			HPF	cal							Yes
0034	LFC Cal	10:57	106.5			HPF	cal							Yes
0035	LFC Cal	11:00	106.5			HPF	cal							Yes
0036	Etalon Cal	11:07	159.8			HPF	cal							Yes
0037	Etalon Cal	11:11	159.8			HPF	cal							Yes
0038	Etalon Cal	11:14	159.8			HPF	cal							Yes
0039	Etalon Cal	11:17	159.8			HPF	cal							Yes
0040	UNe Slave Cal	11:21	426			HPF	cal							Yes
0041	UNe Slave Cal	11:28	426			HPF	cal							Yes
0042	UNe Slave Cal	11:36	426			HPF	cal							Yes
0043	UNe Slave Cal	11:44	426			HPF	cal							Yes
0044	UNe Slave Cal	11:52	426			HPF	cal							Yes
0045	UNe Slave Cal	12:00	426			HPF	cal							Yes
0063	LFC Cal	21:46	106.5			HPF	cal							Yes
0064	LFC Cal	21:53	106.5			HPF	cal							Yes
lrs20009929_01	bias	21:59	0			LRS2	cal							Yes
virus0009921_01	flat_Qth	21:59	20			VIRUS	cal							Yes
virus0009922_01	bias	22:01	0			VIRUS	cal							Yes
lrs20009930_01	flat_ldls_long_B	22:02	20			LRS2	cal							Yes
virus0009923_01	dark	22:03	15			VIRUS	cal							Yes
lrs20009931_01	Cd-A_B	22:04	29			LRS2	cal							Yes
lrs20009932_01	FeAr_R	22:05	15			LRS2	cal							Yes
lrs20009933_01	Hg_B	22:07	15			LRS2	cal							Yes
0065	LFC Cal	22:10	106.5			HPF	cal							Yes
0066	Dark	22:14	319.5			HPF	cal							Yes
0067	Quartz FCU	22:20	74.5			HPF	cal							Yes
0068	Quartz FCU	22:22	74.5			HPF	cal							Yes
0069	Quartz FCU	22:24	74.5			HPF	cal							Yes
0070	Quartz FCU	22:26	74.5			HPF	cal							Yes
0071	Quartz FCU	22:27	74.5			HPF	cal							Yes
0072	Quartz FCU	22:29	74.5			HPF	cal							Yes
0073	Quartz FCU	22:31	74.5			HPF	cal							Yes
0074	Alpha Bright Cal	22:33	85.2			HPF	cal							Yes
0075	Alpha Bright Cal	22:35	85.2			HPF	cal							Yes
0076	Alpha Bright Cal	22:37	85.2			HPF	cal							Yes
0077	Alpha Bright Cal	22:39	85.2			HPF	cal							Yes
0078	LFC FCU	22:42	106.5			HPF	cal							Yes
0079	LFC FCU	22:44	106.5			HPF	cal							Yes
0080	LFC Cal	22:47	106.5			HPF	cal							Yes
0081	LFC Cal	22:49	106.5			HPF	cal							Yes
0082	Etalon Cal	22:52	159.8			HPF	cal							Yes
0083	UNe Slave Cal	22:56	426			HPF	cal							Yes
lrs20000014_01	flat_Qth_R	22:57	15			LRS2	cal							Yes
lrs20000014_02	flat_Qth_R	22:58	15			LRS2	cal							Yes
lrs20000014_03	flat_Qth_R	23:00	15			LRS2	cal							Yes
lrs20000014_04	flat_Qth_R	23:01	15			LRS2	cal							Yes
lrs20000014_05	flat_Qth_R	23:02	15			LRS2	cal							Yes
0084	UNe Slave Cal	23:03	426			HPF	cal							Yes
lrs20000015_01	flat_ldls_long_B	23:03	20			LRS2	cal							Yes
lrs20000015_02	flat_ldls_long_B	23:05	20			LRS2	cal							Yes
lrs20000015_03	flat_ldls_long_B	23:06	20			LRS2	cal							Yes
lrs20000016_01	Cd-A_B	23:07	29			LRS2	cal							Yes
lrs20000016_02	Cd-A_B	23:09	29			LRS2	cal							Yes
lrs20000016_03	Cd-A_B	23:10	29			LRS2	cal							Yes
0085	UNe Slave Cal	23:11	426			HPF	cal							Yes
lrs20000017_01	FeAr_R	23:12	15			LRS2	cal							Yes
lrs20000017_02	FeAr_R	23:13	15			LRS2	cal							Yes
lrs20000017_03	FeAr_R	23:14	15			LRS2	cal							Yes
lrs20000018_01	Hg_R	23:15	20			LRS2	cal							Yes
lrs20000018_02	Hg_R	23:17	20			LRS2	cal							Yes
lrs20000018_03	Hg_R	23:18	20			LRS2	cal							Yes
0086	UNe Slave Cal	23:19	426			HPF	cal							Yes
lrs20000019_01	Hg_B	23:19	15			LRS2	cal							Yes
lrs20000019_02	Hg_B	23:21	15			LRS2	cal							Yes
lrs20000019_03	Hg_B	23:22	15			LRS2	cal							Yes
0087	UNe Slave Cal	23:27	426			HPF	cal							Yes
virus0000010_01	flat_ldls_long	23:28	15			VIRUS	cal							Yes
virus0000010_02	flat_ldls_long	23:30	15			VIRUS	cal							Yes
virus0000010_03	flat_ldls_long	23:31	15			VIRUS	cal							Yes
virus0000011_01	Cd-A	23:32	15			VIRUS	cal							Yes
virus0000011_02	Cd-A	23:34	15			VIRUS	cal							Yes
0088	UNe Slave Cal	23:35	426			HPF	cal							Yes
virus0000011_03	Cd-A	23:35	15			VIRUS	cal							Yes
virus0000012_01	Hg	23:37	15			VIRUS	cal							Yes
virus0000012_02	Hg	23:38	15			VIRUS	cal							Yes
virus0000012_03	Hg	23:39	15			VIRUS	cal							Yes
lrs20000020_01	bias	23:41	0			LRS2	cal							Yes
virus0000013_01	bias	23:41	0			VIRUS	cal							Yes
lrs20000020_02	bias	23:42	0			LRS2	cal							Yes
virus0000013_02	bias	23:42	0			VIRUS	cal							Yes
lrs20000020_03	bias	23:43	0			LRS2	cal							Yes
virus0000013_03	bias	23:43	0			VIRUS	cal							Yes
lrs20000020_04	bias	23:43	0			LRS2	cal							Yes
virus0000013_04	bias	23:44	0			VIRUS	cal							Yes
lrs20000020_05	bias	23:44	0			LRS2	cal							Yes
virus0000013_05	bias	23:44	0			VIRUS	cal							Yes
lrs20000020_06	bias	23:45	0			LRS2	cal							Yes
virus0000013_06	bias	23:45	0			VIRUS	cal							Yes
lrs20000020_07	bias	23:46	0			LRS2	cal							Yes
virus0000013_07	bias	23:46	0			VIRUS	cal							Yes
lrs20000020_08	bias	23:47	0			LRS2	cal							Yes
virus0000013_08	bias	23:47	0			VIRUS	cal							Yes
lrs20000020_09	bias	23:48	0			LRS2	cal							Yes
virus0000013_09	bias	23:48	0			VIRUS	cal							Yes
virus0000013_10	bias	23:49	0			VIRUS	cal							Yes
lrs20000020_10	bias	23:49	0			LRS2	cal							Yes
lrs20000020_11	bias	23:49	0			LRS2	cal							Yes
virus0000013_11	bias	23:50	0			VIRUS	cal							Yes
lrs20000021_01	dark	23:50	360			LRS2	cal							Yes
virus0000014_01	dark	23:51	360			VIRUS	cal							Yes
lrs20000021_02	dark	23:57	360			LRS2	cal							Yes
virus0000014_02	dark	23:57	360			VIRUS	cal							Yes

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