HET Night Report Reader

Civil Date	Ephemerides
2026-04-21	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:35	02:22	02:53	10:55	11:26	12:14	-	06:38
Night Length	8:02		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Sergey Rostopchin	Amy Westfall

Overlaps
TO Overlap	RA Overlap
-	Tyler Ryburn

Other Personnel	Joshua Scally

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:32	17.0	15.8	11:47	twilight	10:15
Total Time Open					10:15

Program	Night Priority	Science
02:53	Science
10:29	Idle due to weather (clouds)

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:02	02:29	0.59	1.02	60	-5617	16.8	16.5	16.2	100	11	First of Night
11:23	11:46					15.7	15.8	15.8	214	14	End of Night

Problem Reports
PR Number	Times	Time Lost	Description	Response
6669	06:51-06:51	00:00	hobs not keeping track for AND group

TO Comments	Stable temperature all night with clear skies. Josh Scally up in the morning for DMI piston spot check.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000029_03	dark	00:00	360			LRS2	cal							Yes
virus0000027_03	dark	00:01	360			VIRUS	cal							Yes
0001	twilight	01:34	298.2			HPF	cal					417		Yes
lrs20000001_01	skyflat	01:40	7			LRS2	cal							Yes
lrs20000002_01	skyflat	01:41	10			LRS2	cal							Yes
lrs20000003_01	skyflat	01:42	13			LRS2	cal							Yes
lrs20000004_01	skyflat	01:43	16			LRS2	cal							Yes
lrs20000005_01	skyflat	01:45	22			LRS2	cal							Yes
lrs20000006_01	skyflat	01:46	30			LRS2	cal							Yes
virus0000001_01	skyflat	01:49	7			VIRUS	cal							Yes
virus0000002_01	skyflat	01:50	10			VIRUS	cal							Yes
virus0000003_01	skyflat	01:51	14			VIRUS	cal							Yes
virus0000004_01	skyflat	01:53	18			VIRUS	cal							Yes
virus0000005_01	skyflat	01:54	26			VIRUS	cal							Yes
0002	LFC Cal	01:56	106.5			HPF	cal							Yes
0003	LFC Cal	01:58	106.5			HPF	cal							Yes
0004	LFC Cal	02:01	106.5			HPF	cal							Yes
0005	HR4663_tell_std	02:39	117.2	5.0		HPF	telluric	1.88	1.13	19.81	0.80			Yes
0006	LFC Cal	02:48	106.5			HPF	cal							Yes
virus0000006_01	parallel	02:48	1800			VIRUS	sci							Yes
lrs20000007_01	QID 832	02:48	1800	7.0	PSU26-2-011	LRS2-R	sci	1.60	1.14	20.63	0.89			Yes
0007	LFC Cal	02:50	106.5			HPF	cal							Yes
0008	LFC Cal	02:53	106.5			HPF	cal							Yes
0009	LFC Cal	03:25	106.5			HPF	cal							Yes
virus0000007_01	parallel	03:25	1800			VIRUS	sci							Yes
lrs20000008_01	QID 775	03:25	1800	7.0	UT26-2-003	LRS2-B	sci	1.47	1.04	21.12	0.88			Yes
0010	LFC Cal	03:27	106.5			HPF	cal							Yes
0011	LFC Cal	03:29	106.5			HPF	cal							Yes
0012	LFC Cal	04:04	106.5			HPF	cal							Yes
virus0000008_01	parallel	04:04	1500			VIRUS	sci							Yes
lrs20000009_01	QID 3	04:04	1500	9.0	PSU26-2-005	LRS2-B	sci	1.41	1.07	20.91	0.86			Yes
0013	LFC Cal	04:06	106.5			HPF	cal							Yes
0014	LFC Cal	04:08	106.5			HPF	cal							Yes
0015	LFC Cal	04:37	106.5			HPF	cal							Yes
virus0000009_01	parallel	04:37	1200			VIRUS	sci							Yes
lrs20000010_01	QID 467	04:37	1200	8.0	UT26-2-008	LRS2-B	sci	1.51	0.96	21.33	0.88			Yes
0016	LFC Cal	04:39	106.5			HPF	cal							Yes
0017	LFC Cal	04:42	106.5			HPF	cal							Yes
0018	LFC Cal	05:02	106.5			HPF	cal							Yes
virus0000010_01	parallel	05:02	300			VIRUS	sci							Yes
lrs20000011_01	QID 612	05:02	300	5.0	PSU26-2-001	LRS2-R	sci	1.45	1.13	20.68	0.94			P4
0019	LFC Cal	05:05	106.5			HPF	cal							Yes
0020	LFC Cal	05:16	106.5			HPF	cal							Yes
virus0000011_01	parallel	05:16	3000			VIRUS	sci							Yes
lrs20000012_01	QID 828	05:16	3000	9.0	PSU26-2-011	LRS2-B	sci	1.39	0.97	21.35	0.98			Yes
0021	LFC Cal	05:18	106.5			HPF	cal							Yes
0022	LFC Cal	05:21	106.5			HPF	cal							Yes
0023	QID 674	06:13	969.1	7.8	PSU26-2-013	HPF	sci	1.48	1.03	20.24	1.02	219		Yes
virus0000012_01	parallel	06:13	2047			VIRUS	sci							Yes
0024	QID 674	06:31	969.1	0.8	PSU26-2-013	HPF	sci	1.59	1.03	20.36	1.01	232		Yes
0025	LFC Cal	06:49	106.5			HPF	cal							Yes
0026	LFC Cal	06:56	106.5			HPF	cal							Yes
virus0000013_01	parallel	06:56	1800			VIRUS	sci							Yes
lrs20000013_01	QID 776	06:56	1800	9.0	UT26-2-003	LRS2-R	sci	1.47	1.17	20.90	0.96			Yes
0027	LFC Cal	06:58	106.5			HPF	cal							Yes
0028	LFC Cal	07:01	106.5			HPF	cal							Yes
0029	LFC Cal	07:31	106.5			HPF	cal							Yes
lrs20000014_01	parallel	07:31	360			LRS2	sci							Yes
virus0000014_01	QID 556	07:31	360	5.0	UT26-2-016	VIRUS	sci	1.31	0.92	21.82	0.83			Yes
0030	LFC Cal	07:33	106.5			HPF	cal							Yes
lrs20000014_02	parallel	07:38	360			LRS2	sci							Yes
virus0000014_02	QID 556	07:38	360	1.0	UT26-2-016	VIRUS	sci	1.35	1.07	21.81	0.82			Yes
lrs20000014_03	parallel	07:45	360			LRS2	sci							Yes
virus0000014_03	QID 556	07:45	360	1.0	UT26-2-016	VIRUS	sci	1.41	1.25	21.80	0.80			Yes
0031	LFC Cal	07:58	106.5			HPF	cal							Yes
virus0000015_01	parallel	07:58	1800			VIRUS	sci							Yes
lrs20000015_01	QID 465	07:58	1800	7.0	UT26-2-018	LRS2-B	sci	1.62	1.20	21.90	0.86			Yes
0032	LFC Cal	08:00	106.5			HPF	cal							Yes
0033	LFC Cal	08:03	106.5			HPF	cal							Yes
0034	LFC Cal	08:32	106.5			HPF	cal							Yes
virus0000016_01	parallel	08:32	900			VIRUS	sci							Yes
lrs20000016_01	QID 466	08:32	900	4.0	UT26-2-018	LRS2-R	sci	1.27	1.13	20.98	0.91			Yes
0035	LFC Cal	08:34	106.5			HPF	cal							Yes
0036	LFC Cal	08:37	106.5			HPF	cal							Yes
0037	QID 172	08:53	159.8	6.3	UT26-2-011	HPF	sci	1.82	1.13	20.35	0.95	179		Yes
0038	LFC Cal	09:02	106.5			HPF	cal							Yes
lrs20000017_01	parallel	09:02	1000			LRS2	sci							Yes
virus0000017_01	QID 215	09:02	1000	6.3	PSU26-2-003	VIRUS	sci	1.56	1.41	21.91	0.86			Yes
0039	LFC Cal	09:05	106.5			HPF	cal							Yes
0040	LFC Cal	09:07	106.5			HPF	cal							Yes
lrs20000017_02	parallel	09:20	1000			LRS2	sci							Yes
virus0000017_02	QID 215	09:20	1000	1.3	PSU26-2-003	VIRUS	sci	1.94	1.65	21.98	0.80			Yes
lrs20000017_03	parallel	09:38	1000			LRS2	sci							Yes
virus0000017_03	QID 215	09:38	1000	1.3	PSU26-2-003	VIRUS	sci	1.84	1.38	22.00	0.79			Yes
lrs20000018_01	BD+262606_056_W	10:01	60	6.0		LRS2	spec	1.61		21.90	0.68			Yes
lrs20000019_01	BD+262606_066_W	10:05	30	2.5		LRS2	spec	1.52	1.25	20.75	0.52			Yes
0041	LFC Cal	10:09	106.5			HPF	cal							Yes
lrs20000020_01	parallel	10:09	360			LRS2	sci							Yes
virus0000018_01	QID 561	10:09	360	4.0	UT26-2-016	VIRUS	sci	1.75	1.24	21.87	0.56			Yes
0042	LFC Cal	10:11	106.5			HPF	cal							Yes
lrs20000020_02	parallel	10:16	360			LRS2	sci							Yes
virus0000018_02	QID 561	10:16	360	1.0	UT26-2-016	VIRUS	sci	1.63		21.84	0.54			Yes
lrs20000020_03	parallel	10:23	360			LRS2	sci							Yes
virus0000018_03	QID 561	10:23	360	1.0	UT26-2-016	VIRUS	sci	1.58		21.89	0.71			No
0043	LFC Cal	10:33	106.5			HPF	cal							Yes
lrs20000021_01	parallel	10:33	360			LRS2	sci							Yes
virus0000019_01	QID 551	10:33	360	4.0	UT26-2-016	VIRUS	sci	1.61		21.47	0.34		clouds	No
0044	LFC Cal	10:35	106.5			HPF	cal							Yes
lrs20000021_02	parallel	10:40	360			LRS2	sci							Yes
virus0000019_02	QID 551	10:40	360	1.0	UT26-2-016	VIRUS	sci	1.61		21.75	0.79			No
lrs20000021_03	parallel	10:47	360			LRS2	sci							Yes
virus0000019_03	QID 551	10:47	360	1.0	UT26-2-016	VIRUS	sci	1.59		21.83	0.84			No
virus0000020_01	1808347_034_E	10:59	60	6.0		VIRUS	spec	1.92		21.62	0.60			Yes
virus0000020_02	1808347_034_E	11:01	60	1.0		VIRUS	spec	1.70		21.58	0.66			Yes
virus0000020_03	1808347_034_E	11:03	60	1.0		VIRUS	spec	1.70		21.45	0.51			Yes
lrs20000022_01	QID 425	11:10	180	6.0	UT26-2-017	LRS2-B	sci	1.83		21.04	0.73			Yes
0045	LFC Cal	11:11	106.5			HPF	cal							Yes
0046	LFC Cal	11:17	106.5			HPF	cal							Yes
virus0000021_01	parallel	11:17	360			VIRUS	sci							Yes
lrs20000023_01	QID 426	11:17	360	4.0	UT26-2-017	LRS2-R	sci	1.54		19.85	0.90			Yes
0047	LFC Cal	11:19	106.5			HPF	cal							Yes
lrs20000024_01	bias	11:24	0			LRS2	cal							Yes
virus0000022_01	bias	11:25	0			VIRUS	cal							Yes
virus0000023_01	Cd-A	11:27	15		ENG26-2-002	VIRUS	cal							Yes
virus0000024_01	Hg	11:29	15		ENG26-2-002	VIRUS	cal							Yes
0048	Dark	11:49	319.5			HPF	cal							Yes
0049	Quartz FCU	12:01	74.5			HPF	cal							Yes
0050	Quartz FCU	12:03	74.5			HPF	cal							Yes
0051	Quartz FCU	12:05	74.5			HPF	cal							Yes
0052	Quartz FCU	12:06	74.5			HPF	cal							Yes
0053	Quartz FCU	12:08	74.5			HPF	cal							Yes
0054	Quartz FCU	12:10	74.5			HPF	cal							Yes
0055	Quartz FCU	12:12	74.5			HPF	cal							Yes
0056	Alpha Bright Cal	12:14	85.2			HPF	cal							Yes
0057	Alpha Bright Cal	12:16	85.2			HPF	cal							Yes
0058	Alpha Bright Cal	12:18	85.2			HPF	cal							Yes
0059	Alpha Bright Cal	12:20	85.2			HPF	cal							Yes
0060	LFC FCU	12:23	106.5			HPF	cal							Yes
0061	LFC FCU	12:25	106.5			HPF	cal							Yes
0062	LFC FCU	12:27	106.5			HPF	cal							Yes
0063	LFC FCU	12:30	106.5			HPF	cal							Yes
0064	LFC FCU	12:32	106.5			HPF	cal							Yes
0065	LFC FCU	12:34	106.5			HPF	cal							Yes
0066	LFC Cal	12:37	106.5			HPF	cal							Yes
0067	LFC Cal	12:40	106.5			HPF	cal							Yes
0068	Etalon Cal	12:47	159.8			HPF	cal							Yes
0069	Etalon Cal	12:50	159.8			HPF	cal							Yes
0070	Etalon Cal	12:54	159.8			HPF	cal							Yes
0071	Etalon Cal	12:57	159.8			HPF	cal							Yes
0072	UNe Slave Cal	13:01	426			HPF	cal							Yes
0073	UNe Slave Cal	13:08	426			HPF	cal							Yes
0074	UNe Slave Cal	13:16	426			HPF	cal							Yes
0075	UNe Slave Cal	13:24	426			HPF	cal							Yes
0076	UNe Slave Cal	13:32	426			HPF	cal							Yes
0077	UNe Slave Cal	13:39	426			HPF	cal							Yes
0076	LFC Cal	21:48	106.5			HPF	cal							Yes
lrs20009900_01	bias	21:59	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	22:02	20			LRS2	cal							Yes
virus0009902_01	dark	22:04	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:04	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:06	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:07	15			LRS2	cal							Yes
0077	Dark	22:10	319.5			HPF	cal							Yes
0078	Quartz FCU	22:17	74.5			HPF	cal							Yes
0079	Quartz FCU	22:19	74.5			HPF	cal							Yes
0080	Quartz FCU	22:21	74.5			HPF	cal							Yes
0081	Quartz FCU	22:22	74.5			HPF	cal							Yes
0082	Quartz FCU	22:24	74.5			HPF	cal							Yes
0083	Quartz FCU	22:26	74.5			HPF	cal							Yes
0084	Quartz FCU	22:28	74.5			HPF	cal							Yes
0085	Alpha Bright Cal	22:30	85.2			HPF	cal							Yes
0086	Alpha Bright Cal	22:32	85.2			HPF	cal							Yes
0087	Alpha Bright Cal	22:34	85.2			HPF	cal							Yes
0088	Alpha Bright Cal	22:36	85.2			HPF	cal							Yes
0089	LFC FCU	22:38	106.5			HPF	cal							Yes
0090	LFC FCU	22:41	106.5			HPF	cal							Yes
0091	LFC Cal	22:43	106.5			HPF	cal							Yes
0092	LFC Cal	22:46	106.5			HPF	cal							Yes
0093	Etalon Cal	22:48	159.8			HPF	cal							Yes
0094	UNe Slave Cal	22:52	426			HPF	cal							Yes
lrs20000022_01	flat_Qth_R	22:53	15			LRS2	cal							Yes
lrs20000022_02	flat_Qth_R	22:54	15			LRS2	cal							Yes
lrs20000022_03	flat_Qth_R	22:56	15			LRS2	cal							Yes
lrs20000022_04	flat_Qth_R	22:57	15			LRS2	cal							Yes
lrs20000022_05	flat_Qth_R	22:58	15			LRS2	cal							Yes
lrs20000023_01	flat_ldls_long_B	22:59	20			LRS2	cal							Yes
0095	UNe Slave Cal	23:00	426			HPF	cal							Yes
lrs20000023_02	flat_ldls_long_B	23:01	20			LRS2	cal							Yes
lrs20000023_03	flat_ldls_long_B	23:02	20			LRS2	cal							Yes
lrs20000024_01	Cd-A_B	23:03	29			LRS2	cal							Yes
lrs20000024_02	Cd-A_B	23:05	29			LRS2	cal							Yes
lrs20000024_03	Cd-A_B	23:06	29			LRS2	cal							Yes
0096	UNe Slave Cal	23:08	426			HPF	cal							Yes
lrs20000025_01	FeAr_R	23:08	15			LRS2	cal							Yes
lrs20000025_02	FeAr_R	23:09	15			LRS2	cal							Yes
lrs20000025_03	FeAr_R	23:10	15			LRS2	cal							Yes
lrs20000026_01	Hg_R	23:11	20			LRS2	cal							Yes
lrs20000026_02	Hg_R	23:13	20			LRS2	cal							Yes
lrs20000026_03	Hg_R	23:14	20			LRS2	cal							Yes
0097	UNe Slave Cal	23:15	426			HPF	cal							Yes
lrs20000027_01	Hg_B	23:15	15			LRS2	cal							Yes
lrs20000027_02	Hg_B	23:16	15			LRS2	cal							Yes
lrs20000027_03	Hg_B	23:18	15			LRS2	cal							Yes
0098	UNe Slave Cal	23:23	426			HPF	cal							Yes
virus0000023_01	flat_ldls_long	23:24	15			VIRUS	cal							Yes
virus0000023_02	flat_ldls_long	23:26	15			VIRUS	cal							Yes
virus0000023_03	flat_ldls_long	23:27	15			VIRUS	cal							Yes
virus0000024_01	Cd-A	23:29	15			VIRUS	cal							Yes
virus0000024_02	Cd-A	23:30	15			VIRUS	cal							Yes
0099	UNe Slave Cal	23:31	426			HPF	cal							Yes
virus0000024_03	Cd-A	23:31	15			VIRUS	cal							Yes
virus0000025_01	Hg	23:33	15			VIRUS	cal							Yes
virus0000025_02	Hg	23:34	15			VIRUS	cal							Yes
virus0000025_03	Hg	23:36	15			VIRUS	cal							Yes
lrs20000028_01	bias	23:37	0			LRS2	cal							Yes
virus0000026_01	bias	23:37	0			VIRUS	cal							Yes
lrs20000028_02	bias	23:38	0			LRS2	cal							Yes
virus0000026_02	bias	23:38	0			VIRUS	cal							Yes
lrs20000028_03	bias	23:39	0			LRS2	cal							Yes
virus0000026_03	bias	23:39	0			VIRUS	cal							Yes
lrs20000028_04	bias	23:39	0			LRS2	cal							Yes
lrs20000028_05	bias	23:40	0			LRS2	cal							Yes
virus0000026_04	bias	23:40	0			VIRUS	cal							Yes
virus0000026_05	bias	23:41	0			VIRUS	cal							Yes
lrs20000028_06	bias	23:41	0			LRS2	cal							Yes
virus0000026_06	bias	23:42	0			VIRUS	cal							Yes
lrs20000028_07	bias	23:42	0			LRS2	cal							Yes
virus0000026_07	bias	23:42	0			VIRUS	cal							Yes
lrs20000028_08	bias	23:43	0			LRS2	cal							Yes
virus0000026_08	bias	23:43	0			VIRUS	cal							Yes
lrs20000028_09	bias	23:44	0			LRS2	cal							Yes
virus0000026_09	bias	23:44	0			VIRUS	cal							Yes
lrs20000028_10	bias	23:45	0			LRS2	cal							Yes
virus0000026_10	bias	23:45	0			VIRUS	cal							Yes
lrs20000028_11	bias	23:46	0			LRS2	cal							Yes
virus0000026_11	bias	23:46	0			VIRUS	cal							Yes
lrs20000029_01	dark	23:47	360			LRS2	cal							Yes
virus0000027_01	dark	23:47	360			VIRUS	cal							Yes
lrs20000029_02	dark	23:53	360			LRS2	cal							Yes
virus0000027_02	dark	23:54	360			VIRUS	cal							Yes