HET Night Report Reader

Civil Date	Ephemerides
2026-05-17	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:53	02:43	03:17	10:27	11:00	11:52	-	03:15
Night Length	7:10		Sunset Temperature

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

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:47	24.1	21.4	07:16	dust	05:29
09:32	19.5	20.1	11:08	twilight	01:36
Total Time Open					7:05

Program	Night Priority	Science
03:17	Engineering (hpf)
04:28	Science
06:44	Idle due to weather (high dust count)
09:37	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:19	02:56	0.45	0.70	-380	-560	23.0	21.4	21.4	175	11	First of Night
↪ Comments			Poor dome seeing at beginning
10:59	11:08	0.63	1.08	-90	+268	19.1	19.6	19.8	250	11	Post-Observing

Problem Reports
PR Number	Times	Time Lost	Description	Response
6677	06:20-06:44	00:24	HObS fails when no magnitude for guider filter not used	Ran manually
6678	07:35-07:35	00:00	SAMS would not accept any text input in the input boxes causing inability to make GRoC correction.	Restarted SAMS

Ops Comments	none

TO Comments	Clear skies for first half of night, needed to close for two hours due to high dust count. Resumed observing for a short period after. During dust event, DIMM telescope halted slewing while parking while DIMM software was running. The DIMM telescope was power cycled to attempt to slew manually to near home. Will need to be realigned.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	Quartz FCU	00:00	74.5			HPF	cal							Yes
0002	Quartz FCU	00:02	74.5			HPF	cal							Yes
0003	Quartz FCU	00:03	74.5			HPF	cal							Yes
0004	Quartz FCU	00:05	74.5			HPF	cal							Yes
0005	Quartz FCU	00:07	74.5			HPF	cal							Yes
0006	Quartz FCU	00:09	74.5			HPF	cal							Yes
0007	Quartz FCU	00:10	74.5			HPF	cal							Yes
0008	Alpha Bright Cal	00:13	85.2			HPF	cal							Yes
0009	Alpha Bright Cal	00:15	85.2			HPF	cal							Yes
0010	Alpha Bright Cal	00:17	85.2			HPF	cal							Yes
0011	Alpha Bright Cal	00:19	85.2			HPF	cal							Yes
0012	LFC FCU	00:21	106.5			HPF	cal							Yes
0013	LFC FCU	00:24	106.5			HPF	cal							Yes
0014	LFC Cal	00:26	106.5			HPF	cal							Yes
0015	LFC Cal	00:29	106.5			HPF	cal							Yes
0016	Etalon Cal	00:31	159.8			HPF	cal							Yes
0017	UNe Slave Cal	00:35	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:36	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:37	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:39	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:40	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:41	15			LRS2	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:42	20			LRS2	cal							Yes
0018	UNe Slave Cal	00:43	426			HPF	cal							Yes
lrs20000002_02	flat_ldls_long_B	00:44	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	00:45	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	00:46	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	00:48	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	00:49	29			LRS2	cal							Yes
0019	UNe Slave Cal	00:51	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	00:51	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	00:52	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	00:53	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	00:54	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	00:56	20			LRS2	cal							Yes
lrs20000005_03	Hg_R	00:57	20			LRS2	cal							Yes
0020	UNe Slave Cal	00:58	426			HPF	cal							Yes
lrs20000006_01	Hg_B	00:58	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	01:00	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	01:01	15			LRS2	cal							Yes
0021	UNe Slave Cal	01:06	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	01:07	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	01:09	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	01:10	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	01:12	15			VIRUS	cal							Yes
virus0000002_02	Cd-A	01:13	15			VIRUS	cal							Yes
0022	UNe Slave Cal	01:14	426			HPF	cal							Yes
virus0000002_03	Cd-A	01:14	15			VIRUS	cal							Yes
virus0000003_01	Hg	01:16	15			VIRUS	cal							Yes
virus0000003_02	Hg	01:17	15			VIRUS	cal							Yes
virus0000003_03	Hg	01:19	15			VIRUS	cal							Yes
lrs20000007_01	dark	01:20	360			LRS2	cal							Yes
virus0000004_01	dark	01:20	360			VIRUS	cal							Yes
lrs20000007_02	dark	01:27	360			LRS2	cal							Yes
virus0000004_02	dark	01:27	360			VIRUS	cal							Yes
lrs20000007_03	dark	01:33	360			LRS2	cal							Yes
virus0000004_03	dark	01:34	360			VIRUS	cal							Yes
0023	twilight	01:50	298.2			HPF	cal					452		Yes
lrs20000008_01	skyflat	01:58	7			LRS2	cal							Yes
lrs20000009_01	skyflat	01:59	10			LRS2	cal							Yes
lrs20000010_01	skyflat	02:00	13			LRS2	cal							Yes
lrs20000011_01	skyflat	02:02	16			LRS2	cal							Yes
lrs20000012_01	skyflat	02:03	22			LRS2	cal							Yes
lrs20000013_01	skyflat	02:04	30			LRS2	cal							Yes
virus0000005_01	skyflat	02:08	7			VIRUS	cal							Yes
virus0000006_01	skyflat	02:09	10			VIRUS	cal							Yes
virus0000007_01	skyflat	02:10	14			VIRUS	cal							Yes
virus0000008_01	skyflat	02:12	18			VIRUS	cal							Yes
virus0000009_01	skyflat	02:13	26			VIRUS	cal							Yes
lrs20000014_01	bias	02:16	0			LRS2	cal							Yes
virus0000010_01	bias	02:16	0			VIRUS	cal							Yes
lrs20000014_02	bias	02:17	0			LRS2	cal							Yes
virus0000010_02	bias	02:17	0			VIRUS	cal							Yes
lrs20000014_03	bias	02:18	0			LRS2	cal							Yes
virus0000010_03	bias	02:18	0			VIRUS	cal							Yes
lrs20000014_04	bias	02:19	0			LRS2	cal							Yes
lrs20000014_05	bias	02:19	0			LRS2	cal							Yes
virus0000010_04	bias	02:19	0			VIRUS	cal							Yes
virus0000010_05	bias	02:20	0			VIRUS	cal							Yes
lrs20000014_06	bias	02:20	0			LRS2	cal							Yes
virus0000010_06	bias	02:21	0			VIRUS	cal							Yes
lrs20000014_07	bias	02:21	0			LRS2	cal							Yes
virus0000010_07	bias	02:21	0			VIRUS	cal							Yes
lrs20000014_08	bias	02:22	0			LRS2	cal							Yes
virus0000010_08	bias	02:22	0			VIRUS	cal							Yes
lrs20000014_09	bias	02:23	0			LRS2	cal							Yes
virus0000010_09	bias	02:23	0			VIRUS	cal							Yes
lrs20000014_10	bias	02:24	0			LRS2	cal							Yes
virus0000010_10	bias	02:24	0			VIRUS	cal							Yes
lrs20000014_11	bias	02:25	0			LRS2	cal							Yes
virus0000010_11	bias	02:25	0			VIRUS	cal							Yes
0024	LFC Cal	03:04	106.5			HPF	cal							Yes
virus0000011_01	parallel	03:04	2400			VIRUS	sci							Yes
lrs20000015_01	parallel	03:04	2400	8.0	PSU26-2-005	LRS2-B	sci	1.71	0.95	21.78	0.98			Yes
0025	LFC Cal	03:06	106.5			HPF	cal							Yes
0026	LFC Cal	03:09	106.5			HPF	cal							Yes
virus0000012_01	parallel	03:49	2497			VIRUS	eng							Yes
0027	AD_Leo	03:50	159.8	5.3	ENG26-2-000	HPF	eng	1.68	1.08	19.73	1.03	400		Yes
0028	AD_Leo	03:53	159.8	1.3	ENG26-2-000	HPF	eng	1.53	0.93	19.74	1.02	453		Yes
0029	AD_Leo	03:56	159.8	0.3	ENG26-2-000	HPF	eng	1.43	0.97	19.75	1.02	492		Yes
0030	AD_Leo	03:59	159.8	0.3	ENG26-2-000	HPF	eng	1.34	0.93	19.75	1.03	517		Yes
0031	AD_Leo	04:02	159.8	0.3	ENG26-2-000	HPF	eng	1.44	0.84	19.74	1.06	487		Yes
0032	AD_Leo	04:06	159.8	0.3	ENG26-2-000	HPF	eng	1.56	0.96	19.73	1.10	466		Yes
0033	AD_Leo	04:09	159.8	1.3	ENG26-2-000	HPF	eng	1.36	0.79	19.71	1.09	482		Yes
0034	AD_Leo	04:12	159.8	0.3	ENG26-2-000	HPF	eng	1.35	0.76	19.46	1.01	452		Yes
0035	AD_Leo	04:15	159.8	0.3	ENG26-2-000	HPF	eng	1.42	1.10	19.44	0.97	425		Yes
0036	AD_Leo	04:18	159.8	0.3	ENG26-2-000	HPF	eng	1.30	0.89	19.43	0.94	414		Yes
0037	AD_Leo	04:22	159.8	0.3	ENG26-2-000	HPF	eng	1.33	0.90	19.49	0.93	391		Yes
0038	AD_Leo	04:25	159.8	1.3	ENG26-2-000	HPF	eng	1.40	1.01	19.51	0.89	360		Yes
0039	LFC Cal	04:29	106.5			HPF	cal							Yes
0040	parallel	04:38	969.1	9.8	PSU26-2-013	HPF	sci	1.69	1.28	20.46	1.07	227		Yes
virus0000013_01	parallel	04:38	2047			VIRUS	sci							Yes
0041	parallel	04:55	969.1	0.8	PSU26-2-013	HPF	sci	1.72	1.14	20.45	1.07	238		Yes
0042	LFC Cal	05:13	106.5			HPF	cal							Yes
lrs20000016_01	parallel	05:15	360			LRS2	sci							Yes
virus0000014_01	parallel	05:15	360	4.0	UT26-2-016	VIRUS	sci	1.95	1.14	22.06	0.94			Yes
0043	LFC Cal	05:16	106.5			HPF	cal							Yes
0044	LFC Cal	05:18	106.5			HPF	cal							Yes
lrs20000016_02	parallel	05:23	360			LRS2	sci							Yes
virus0000014_02	parallel	05:23	360	2.0	UT26-2-016	VIRUS	sci	2.04	1.11	22.06	0.93			Yes
lrs20000016_03	parallel	05:30	360			LRS2	sci							Yes
virus0000014_03	parallel	05:30	360	1.0	UT26-2-016	VIRUS	sci	1.96	1.05	22.03	0.91			Yes
0045	LFC Cal	05:40	106.5			HPF	cal							Yes
lrs20000017_01	parallel	05:40	360			LRS2	sci							Yes
virus0000015_01	parallel	05:40	360	4.0	UT26-2-016	VIRUS	sci	1.64	0.95	21.96	0.85			Yes
0046	LFC Cal	05:42	106.5			HPF	cal							Yes
lrs20000017_02	parallel	05:47	360			LRS2	sci							Yes
virus0000015_02	parallel	05:47	360	1.0	UT26-2-016	VIRUS	sci	1.64	0.83	21.96	0.83			Yes
lrs20000017_03	parallel	05:54	360			LRS2	sci							Yes
virus0000015_03	parallel	05:54	360	1.0	UT26-2-016	VIRUS	sci	1.53	1.15	21.96	0.81			Yes
0047	LFC Cal	06:07	106.5			HPF	cal							Yes
virus0000016_01	parallel	06:07	300			VIRUS	sci							Yes
lrs20000018_01	parallel	06:07	300	7.0	PSU26-2-001	LRS2-R	sci	1.70	1.09	21.14	1.14			P4
0048	LFC Cal	06:09	106.5			HPF	cal							Yes
0049	parallel	06:19	42.6	7.3	UT26-2-019	HPF	sci	1.74	1.27	20.08	0.99	462		P4
0050	LFC Cal	06:21	106.5			HPF	cal							Yes
lrs20000019_01	parallel	06:26	180	6.0	UT26-2-017	LRS2-B	sci	2.10	1.35	22.09				Yes
0051	LFC Cal	06:27	106.5			HPF	cal							Yes
0052	LFC Cal	06:38	106.5			HPF	cal							Yes
virus0000017_01	parallel	06:38	360			VIRUS	sci							Yes
lrs20000020_01	parallel	06:38	360	9.0	UT26-2-017	LRS2-R	sci	2.00	1.23	21.20	1.00			Yes
0053	LFC Cal	06:40	106.5			HPF	cal							Yes
0054	parallel	06:49	915.9	5.7	UT26-2-009	HPF	sci	1.84	1.20	20.23	0.86	54		No
virus0000018_01	parallel	06:49	2941			VIRUS	sci							Yes
0055	parallel	07:05	915.9	0.7	UT26-2-009	HPF	sci	1.72	1.00	20.28	0.78	52	Had to abort and close dome due to high dust count	No
0056	LFC Cal	08:00	106.5			HPF	cal							Yes
lrs20000021_01	1805292_056_W	09:40	180	3.0		LRS2	spec	2.04		22.24	0.99			Yes
lrs20000022_01	1805292_066_W	09:46	120	3.0		LRS2	spec	1.86		21.14	1.11			Yes
0057	LFC Cal	09:56	106.5			HPF	cal							Yes
virus0000019_01	parallel	09:56	400			VIRUS	sci							Yes
lrs20000023_01	parallel	09:56	400	8.3	PSU26-2-004	LRS2-B	sci	1.92		21.42	0.79			Yes
0058	LFC Cal	09:59	106.5			HPF	cal							Yes
0059	LFC Cal	10:01	106.5			HPF	cal							Yes
virus0000020_01	parallel	10:08	374			VIRUS	sci							Yes
0060	parallel	10:09	340.8	6.3	PSU26-2-014	HPF	sci	1.67		20.09	0.99	379		Yes
0061	LFC Cal	10:20	106.5			HPF	cal							Yes
virus0000021_01	parallel	10:20	900			VIRUS	sci							Yes
lrs20000024_01	parallel	10:20	900	5.0	PSU26-2-004	LRS2-B	sci	1.70		21.69	0.90			Yes
0062	LFC Cal	10:23	106.5			HPF	cal							Yes
0063	LFC Cal	10:25	106.5			HPF	cal							Yes
virus0000022_01	parallel	10:41	1023			VIRUS	sci							Yes
0064	parallel	10:42	969.1	6.8	UT26-2-019	HPF	sci	1.65		19.92	0.99	428		P4
0065	LFC Cal	10:59	106.5			HPF	cal							Yes
lrs20000025_01	bias	11:00	0			LRS2	cal							Yes
virus0000023_01	bias	11:01	0			VIRUS	cal							Yes
virus0000024_01	Cd-A	11:05	15		ENG26-2-002	VIRUS	cal							Yes
virus0000025_01	Hg	11:06	15		ENG26-2-002	VIRUS	cal							Yes
0066	Dark	11:13	319.5			HPF	cal							Yes
0067	Quartz FCU	11:25	74.5			HPF	cal							Yes
0068	Quartz FCU	11:26	74.5			HPF	cal							Yes
0069	Quartz FCU	11:28	74.5			HPF	cal							Yes
0070	Quartz FCU	11:30	74.5			HPF	cal							Yes
0071	Quartz FCU	11:32	74.5			HPF	cal							Yes
0072	Quartz FCU	11:34	74.5			HPF	cal							Yes
0073	Quartz FCU	11:35	74.5			HPF	cal							Yes
0074	Alpha Bright Cal	11:38	85.2			HPF	cal							Yes
0075	Alpha Bright Cal	11:40	85.2			HPF	cal							Yes
0076	Alpha Bright Cal	11:42	85.2			HPF	cal							Yes
0077	Alpha Bright Cal	11:44	85.2			HPF	cal							Yes
0078	LFC FCU	11:46	106.5			HPF	cal							Yes
0079	LFC FCU	11:48	106.5			HPF	cal							Yes
0080	LFC FCU	11:51	106.5			HPF	cal							Yes
0081	LFC FCU	11:53	106.5			HPF	cal							Yes
0082	LFC FCU	11:55	106.5			HPF	cal							Yes
0083	LFC FCU	11:58	106.5			HPF	cal							Yes
0084	LFC Cal	12:01	106.5			HPF	cal							Yes
0085	LFC Cal	12:03	106.5			HPF	cal							Yes
0086	Etalon Cal	12:11	159.8			HPF	cal							Yes
0087	Etalon Cal	12:14	159.8			HPF	cal							Yes
0088	Etalon Cal	12:17	159.8			HPF	cal							Yes
0089	Etalon Cal	12:20	159.8			HPF	cal							Yes
0090	UNe Slave Cal	12:24	426			HPF	cal							Yes
0091	UNe Slave Cal	12:32	426			HPF	cal							Yes
0092	UNe Slave Cal	12:39	426			HPF	cal							Yes
0093	UNe Slave Cal	12:47	426			HPF	cal							Yes
0094	UNe Slave Cal	12:55	426			HPF	cal							Yes
0095	UNe Slave Cal	13:03	426			HPF	cal							Yes
0060	LFC Cal	23:30	106.5			HPF	cal							Yes
lrs20009909_01	bias	23:41	0			LRS2	cal							Yes
virus0009907_01	flat_Qth	23:42	20			VIRUS	cal							Yes
virus0009908_01	bias	23:43	0			VIRUS	cal							Yes
lrs20009910_01	flat_ldls_long_B	23:44	20			LRS2	cal							Yes
virus0009909_01	dark	23:45	15			VIRUS	cal							Yes
lrs20009911_01	Cd-A_B	23:46	29			LRS2	cal							Yes
lrs20009912_01	FeAr_R	23:48	15			LRS2	cal							Yes
lrs20009913_01	Hg_B	23:49	15			LRS2	cal							Yes
0061	Dark	23:53	319.5			HPF	cal							Yes

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