HET Night Report Reader

Civil Date	Ephemerides
2026-05-06	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:45	02:34	03:07	10:37	11:10	12:00	06:25	-
Night Length	7:30		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
Tyler Ryburn	Amy Westfall	-	-

Overlaps
TO Overlap	RA Overlap
-	Zach Vanderbosch

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:14	18.9	14.5	11:37	twilight	10:23
Total Time Open					10:23

Program	Night Priority	Science
03:07	Science
09:34	Idle due to weather (image quality)
10:07	Science
10:27	Engineering (need to finish EON cals before power outage)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:19	03:11	0.39	0.62	-18	+743	18.0	16.3	16.3	321	9	First of Night
10:30	10:36	0.68	1.10	370	+1534	11.5	13.6	14.0	345	11	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6673	10:30-10:40	00:10	EON tasks stalled on acm bias image 4	killed task and restarted in terminal. Ran successfully that time.

Ops Comments	none

TO Comments	Bad seeing close to EON preceding steep drop in temperature. Otherwise clear and calm.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
virus0000009_02	flat_ldls_long	00:00	15			VIRUS	cal							Yes
virus0000009_03	flat_ldls_long	00:01	15			VIRUS	cal							Yes
0001	UNe Slave Cal	00:03	426			HPF	cal							Yes
virus0000010_01	Cd-A	00:03	15			VIRUS	cal							Yes
virus0000010_02	Cd-A	00:04	15			VIRUS	cal							Yes
virus0000010_03	Cd-A	00:06	15			VIRUS	cal							Yes
virus0000011_01	Hg	00:07	15			VIRUS	cal							Yes
virus0000011_02	Hg	00:09	15			VIRUS	cal							Yes
virus0000011_03	Hg	00:10	15			VIRUS	cal							Yes
lrs20000001_01	bias	00:11	0			LRS2	cal							Yes
virus0000001_01	bias	00:11	0			VIRUS	cal							Yes
lrs20000001_02	bias	00:12	0			LRS2	cal							Yes
virus0000001_02	bias	00:12	0			VIRUS	cal							Yes
lrs20000001_03	bias	00:13	0			LRS2	cal							Yes
virus0000001_03	bias	00:13	0			VIRUS	cal							Yes
lrs20000001_04	bias	00:14	0			LRS2	cal							Yes
virus0000001_04	bias	00:14	0			VIRUS	cal							Yes
lrs20000001_05	bias	00:15	0			LRS2	cal							Yes
virus0000001_05	bias	00:15	0			VIRUS	cal							Yes
lrs20000001_06	bias	00:16	0			LRS2	cal							Yes
lrs20000001_07	bias	00:16	0			LRS2	cal							Yes
virus0000001_06	bias	00:16	0			VIRUS	cal							Yes
virus0000001_07	bias	00:17	0			VIRUS	cal							Yes
lrs20000001_08	bias	00:17	0			LRS2	cal							Yes
virus0000001_08	bias	00:18	0			VIRUS	cal							Yes
lrs20000001_09	bias	00:18	0			LRS2	cal							Yes
virus0000001_09	bias	00:18	0			VIRUS	cal							Yes
lrs20000001_10	bias	00:19	0			LRS2	cal							Yes
virus0000001_10	bias	00:19	0			VIRUS	cal							Yes
lrs20000001_11	bias	00:20	0			LRS2	cal							Yes
virus0000001_11	bias	00:20	0			VIRUS	cal							Yes
lrs20000002_01	dark	00:21	360			LRS2	cal							Yes
virus0000002_01	dark	00:21	360			VIRUS	cal							Yes
lrs20000002_02	dark	00:28	360			LRS2	cal							Yes
virus0000002_02	dark	00:28	360			VIRUS	cal							Yes
lrs20000002_03	dark	00:35	360			LRS2	cal							Yes
virus0000002_03	dark	00:35	360			VIRUS	cal							Yes
lrs20000003_01	skyflat	01:51	7			LRS2	cal							Yes
lrs20000004_01	skyflat	01:52	10			LRS2	cal							Yes
lrs20000005_01	skyflat	01:53	13			LRS2	cal							Yes
lrs20000006_01	skyflat	01:54	16			LRS2	cal							Yes
lrs20000007_01	skyflat	01:55	22			LRS2	cal							Yes
lrs20000008_01	skyflat	01:57	30			LRS2	cal							Yes
virus0000003_01	skyflat	02:00	7			VIRUS	cal							Yes
virus0000004_01	skyflat	02:01	10			VIRUS	cal							Yes
virus0000005_01	skyflat	02:02	14			VIRUS	cal							Yes
virus0000006_01	skyflat	02:04	18			VIRUS	cal							Yes
virus0000007_01	skyflat	02:05	26			VIRUS	cal							Yes
lrs20000009_01	parallel	03:16	1000			LRS2	sci							Yes
virus0000008_01	QID 236	03:16	1000	5.3	PSU26-2-003	VIRUS	sci	1.72		21.88	0.93			Yes
0002	LFC Cal	03:17	106.5			HPF	cal							Yes
0003	LFC Cal	03:19	106.5			HPF	cal							Yes
0004	LFC Cal	03:21	106.5			HPF	cal							Yes
lrs20000009_02	parallel	03:34	1000			LRS2	sci							Yes
virus0000008_02	QID 236	03:34	1000	1.3	PSU26-2-003	VIRUS	sci	2.20		21.84	0.93			Yes
lrs20000009_03	parallel	03:52	1000			LRS2	sci							Yes
virus0000008_03	QID 236	03:52	1000	1.3	PSU26-2-003	VIRUS	sci	2.08	1.34	21.83	0.94			Yes
0005	LFC Cal	04:10	106.5			HPF	cal							Yes
0006	QID 471	04:16	915.9	6.7	G26-2-002	HPF	sci	1.61	1.09	20.16	0.89	90		Yes
virus0000009_01	parallel	04:16	1959			VIRUS	sci							Yes
0007	QID 471	04:32	915.9	1.7	G26-2-002	HPF	sci	1.60	1.18	20.16	0.89	98		Yes
0008	LFC Cal	04:49	106.5			HPF	cal							Yes
lrs20000010_01	parallel	04:53	360			LRS2	sci							Yes
virus0000010_01	QID 572	04:53	360	5.0	UT26-2-016	VIRUS	sci	1.77	0.89	21.84	0.80			Yes
0009	LFC Cal	04:54	106.5			HPF	cal							Yes
0010	LFC Cal	04:56	106.5			HPF	cal							Yes
lrs20000010_02	parallel	05:01	360			LRS2	sci							Yes
virus0000010_02	QID 572	05:01	360	2.0	UT26-2-016	VIRUS	sci	1.65	0.92	21.79	0.90			Yes
lrs20000010_03	parallel	05:08	360			LRS2	sci							Yes
virus0000010_03	QID 572	05:08	360	1.0	UT26-2-016	VIRUS	sci	1.53	0.78	21.73	0.99			Yes
virus0000011_01	parallel	05:20	2578			VIRUS	sci							Yes
0011	QID 875	05:21	809.4	6.5	UT26-2-009	HPF	sci	1.52	1.02	20.10	0.94	69		Yes
0012	QID 875	05:35	809.4	0.5	UT26-2-009	HPF	sci	1.53	1.12	20.11	0.98	79		Yes
0013	QID 875	05:49	809.4	1.5	UT26-2-009	HPF	sci	1.46	1.13	20.14	0.99	87		Yes
virus0000012_01	parallel	06:12	1500			VIRUS	sci							Yes
0014	LFC Cal	06:13	106.5			HPF	cal							Yes
lrs20000011_01	QID 702	06:13	1500	10.0	M26-2-006	LRS2-B	sci	1.36	0.99	21.56	0.89			Yes
0015	LFC Cal	06:15	106.5			HPF	cal							Yes
0016	LFC Cal	06:17	106.5			HPF	cal							Yes
0017	LFC Cal	06:43	106.5			HPF	cal							Yes
virus0000013_01	parallel	06:43	1500			VIRUS	sci							Yes
lrs20000012_01	QID 703	06:43	1500	5.0	M26-2-006	LRS2-R	sci	1.42	1.15	20.54	0.91		Hit the end of track with about 20 seconds left in exposure.	Yes
0018	LFC Cal	06:46	106.5			HPF	cal							Yes
0019	LFC Cal	06:48	106.5			HPF	cal							Yes
virus0000014_01	parallel	07:17	2047			VIRUS	sci							Yes
0020	QID 800	07:18	969.1	9.8	PSU26-2-015	HPF	sci	1.60	1.04	19.77	0.84	82		Yes
0021	QID 800	07:35	969.1	0.8	PSU26-2-015	HPF	sci	1.48	1.00	19.77	0.88	101		Yes
0022	LFC Cal	07:53	106.5			HPF	cal							Yes
lrs20000013_01	HZ44_056_W	07:58	60	7.0		LRS2	spec	1.35	1.14	20.45	0.92			Yes
lrs20000014_01	HZ44_066_W	08:03	120	4.0		LRS2	spec	1.50	1.02	20.17	0.95			Yes
virus0000015_01	HZ44_052_W	08:12	60	7.0		VIRUS	spec	2.21	1.78	20.14	1.02			Yes
virus0000015_02	HZ44_052_W	08:14	60	1.0		VIRUS	spec	1.95	1.79	20.13	1.03			Yes
virus0000015_03	HZ44_052_W	08:17	60	2.0		VIRUS	spec	1.89	1.71	20.11	1.02			Yes
0023	HR5238_tell_std	08:25	117.2	6.0		HPF	telluric	1.84	1.46	19.92	0.84			Yes
0024	LFC Cal	08:34	106.5			HPF	cal							Yes
virus0000016_01	parallel	08:34	900			VIRUS	sci							Yes
lrs20000015_01	QID 883	08:34	900	8.0	PSU26-2-004	LRS2-B	sci	1.85	1.56	19.58	0.93			Yes
0025	LFC Cal	08:36	106.5			HPF	cal							Yes
0026	LFC Cal	08:39	106.5			HPF	cal							Yes
virus0000017_01	parallel	09:01	1959			VIRUS	sci							Yes
0027	QID 859	09:02	926.6	12.6	UT26-2-009	HPF	sci	1.83	1.33	19.35	0.98	87		Yes
0028	QID 859	09:18	926.6	1.6	UT26-2-009	HPF	sci	1.68	1.90	19.02	1.10	74		Yes
virus0000018_01	parallel	09:42	300			VIRUS	sci							Yes
0029	LFC Cal	09:43	106.5			HPF	cal							Yes
lrs20000016_01	QID 885	09:43	300	9.0	PSU26-2-004	LRS2-B	sci	1.84	1.35	20.04	0.78		image quality degraded	No
0030	LFC Cal	09:45	106.5			HPF	cal							Yes
virus0000018_02	parallel	09:49	300			VIRUS	sci							Yes
lrs20000016_02	QID 885	09:49	300	1.0	PSU26-2-004	LRS2-B	sci	2.50	2.52	20.04	0.77		image quality degraded	No
virus0000018_03	parallel	09:55	300			VIRUS	sci							Yes
lrs20000016_03	QID 885	09:55	300	1.0	PSU26-2-004	LRS2-B	sci	2.79	2.03	20.04	0.76		image quality degraded	No
0031	LFC Cal	10:12	106.5			HPF	cal							Yes
virus0000019_01	parallel	10:12	300			VIRUS	sci							Yes
lrs20000017_01	QID 626	10:12	300	5.0	PSU26-2-001	LRS2-B	sci	2.52	2.49	19.96	1.15			P4
0032	LFC Cal	10:15	106.5			HPF	cal							Yes
0033	QID 187	10:25	117.2	8.0	UT26-2-011	HPF	sci	1.99	2.08	19.40	0.97	205		Yes
lrs20000018_01	bias	10:29	0			LRS2	cal							Yes
virus0000020_01	bias	10:30	0			VIRUS	cal							Yes
virus0000021_01	bias	10:42	0			VIRUS	cal							Yes
virus0000022_01	Cd-A	10:47	15		ENG26-2-002	VIRUS	cal							Yes
virus0000023_01	Hg	10:49	15		ENG26-2-002	VIRUS	cal							Yes
0034	Dark	10:54	319.5			HPF	cal							Yes
0035	Quartz FCU	11:01	74.5			HPF	cal							Yes
0036	Quartz FCU	11:03	74.5			HPF	cal							Yes
0037	Quartz FCU	11:05	74.5			HPF	cal							Yes
0038	Quartz FCU	11:06	74.5			HPF	cal							Yes
0039	Quartz FCU	11:08	74.5			HPF	cal							Yes
0040	Quartz FCU	11:10	74.5			HPF	cal							Yes
0041	Quartz FCU	11:12	74.5			HPF	cal							Yes
0042	Alpha Bright Cal	11:14	85.2			HPF	cal							Yes
0043	Alpha Bright Cal	11:16	85.2			HPF	cal							Yes
0044	Alpha Bright Cal	11:18	85.2			HPF	cal							Yes
0045	Alpha Bright Cal	11:20	85.2			HPF	cal							Yes
0046	LFC FCU	11:23	106.5			HPF	cal							Yes
0047	LFC FCU	11:25	106.5			HPF	cal							Yes
0048	LFC Cal	11:28	106.5			HPF	cal							Yes
0049	LFC Cal	11:30	106.5			HPF	cal							Yes
0050	Etalon Cal	11:33	159.8			HPF	cal							Yes
0051	UNe Slave Cal	11:37	426			HPF	cal							Yes
0052	UNe Slave Cal	11:44	426			HPF	cal							Yes
0053	UNe Slave Cal	11:52	426			HPF	cal							Yes
0054	UNe Slave Cal	12:00	426			HPF	cal							Yes
0055	UNe Slave Cal	12:08	426			HPF	cal							Yes
0056	UNe Slave Cal	12:15	426			HPF	cal							Yes
0043	LFC Cal	21:50	106.5			HPF	cal							Yes
lrs20009900_01	bias	22:00	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:00	20			VIRUS	cal							Yes
virus0009901_01	bias	22:02	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:03	20			LRS2	cal							Yes
virus0009902_01	dark	22:04	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:05	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:06	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:08	15			LRS2	cal							Yes
0044	Dark	22:41	319.5			HPF	cal							Yes
0045	Quartz FCU	22:48	74.5			HPF	cal							Yes
0046	Quartz FCU	22:50	74.5			HPF	cal							Yes
0047	Quartz FCU	22:52	74.5			HPF	cal							Yes
0048	Quartz FCU	22:53	74.5			HPF	cal							Yes
0049	Quartz FCU	22:55	74.5			HPF	cal							Yes
0050	Quartz FCU	22:57	74.5			HPF	cal							Yes
0051	Quartz FCU	22:59	74.5			HPF	cal							Yes
0052	Alpha Bright Cal	23:01	85.2			HPF	cal							Yes
0053	Alpha Bright Cal	23:03	85.2			HPF	cal							Yes
0054	Alpha Bright Cal	23:05	85.2			HPF	cal							Yes
0055	Alpha Bright Cal	23:07	85.2			HPF	cal							Yes
0056	LFC FCU	23:09	106.5			HPF	cal							Yes
0057	LFC FCU	23:12	106.5			HPF	cal							Yes
0058	LFC Cal	23:15	106.5			HPF	cal							Yes
0059	LFC Cal	23:17	106.5			HPF	cal							Yes
0060	Etalon Cal	23:20	159.8			HPF	cal							Yes
0061	UNe Slave Cal	23:24	426			HPF	cal							Yes
lrs20000008_01	flat_Qth_R	23:27	15			LRS2	cal							Yes
lrs20000008_02	flat_Qth_R	23:29	15			LRS2	cal							Yes
lrs20000008_03	flat_Qth_R	23:30	15			LRS2	cal							Yes
0062	UNe Slave Cal	23:31	426			HPF	cal							Yes
lrs20000008_04	flat_Qth_R	23:31	15			LRS2	cal							Yes
lrs20000008_05	flat_Qth_R	23:32	15			LRS2	cal							Yes
lrs20000009_01	flat_ldls_long_B	23:34	20			LRS2	cal							Yes
lrs20000009_02	flat_ldls_long_B	23:35	20			LRS2	cal							Yes
lrs20000009_03	flat_ldls_long_B	23:36	20			LRS2	cal							Yes
lrs20000010_01	Cd-A_B	23:37	29			LRS2	cal							Yes
0063	UNe Slave Cal	23:39	426			HPF	cal							Yes
lrs20000010_02	Cd-A_B	23:39	29			LRS2	cal							Yes
lrs20000010_03	Cd-A_B	23:40	29			LRS2	cal							Yes
lrs20000011_01	FeAr_R	23:42	15			LRS2	cal							Yes
lrs20000011_02	FeAr_R	23:43	15			LRS2	cal							Yes
lrs20000011_03	FeAr_R	23:44	15			LRS2	cal							Yes
lrs20000012_01	Hg_R	23:46	20			LRS2	cal							Yes
0064	UNe Slave Cal	23:47	426			HPF	cal							Yes
lrs20000012_02	Hg_R	23:47	20			LRS2	cal							Yes
lrs20000012_03	Hg_R	23:48	20			LRS2	cal							Yes
lrs20000013_01	Hg_B	23:50	15			LRS2	cal							Yes
lrs20000013_02	Hg_B	23:51	15			LRS2	cal							Yes
lrs20000013_03	Hg_B	23:52	15			LRS2	cal							Yes
0065	UNe Slave Cal	23:55	426			HPF	cal							Yes
virus0000009_01	flat_ldls_long	23:59	15			VIRUS	cal							Yes

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