HET Night Report Reader

Civil Date	Ephemerides
2026-04-18	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:33	02:20	02:50	10:59	11:29	12:17	-	03:12
Night Length	8:09		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Sergey Rostopchin	Justen Pautzke

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:25	8.0	10.5	11:38	twilight	10:13
Total Time Open					10:13

Program	Night Priority	Science
02:50	Science
03:41	Idle due to weather (clouds)
05:00	Science
05:22	Idle due to weather (clouds)
06:03	Science
07:25	Idle due to weather (clouds)
07:33	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
02:00	03:04	0.51	0.82	60	-1843	6.9	7.7	8.0	80	15	First of Night
↪ Comments			Mirror in really rough shape at start of stacking. Moved 5:1 in manually -2 tip, -6 tilt. Moved 5:2 in manually, 0 tip, -6 tilt. Moved 11:6 in manually, 0 tip, 4 tilt. Moved 9:1 in manually, 0 tip, 3 tilt. Moved 9:2 in manually, 0 tip, 3 tilt. Needed to use HEFI exposure time of 1/125s for measurment, light source looks dim.
06:39	06:48	1.35	2.13	115	-1543	4.7	5.3	5.7	74	14	Post-Observing
06:49	07:25	0.49	0.79	70	-946	4.4	4.9	5.2	68	13	Stack/Re-stack
↪ Comments			1/125s exposure used during measurement.
11:27	11:36	0.99	1.59	70	-570	2.9	3.5	3.6	95	18	Post-Observing

Problem Reports					no PRs

TO Comments	Temperature continuously dropping thru night. Partly cloudy and calm with no problems.

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	00:01	74.5			HPF	cal							Yes
0002	Quartz FCU	00:03	74.5			HPF	cal							Yes
0003	Quartz FCU	00:04	74.5			HPF	cal							Yes
0004	Quartz FCU	00:06	74.5			HPF	cal							Yes
0005	Alpha Bright Cal	00:08	85.2			HPF	cal							Yes
0006	Alpha Bright Cal	00:10	85.2			HPF	cal							Yes
0007	Alpha Bright Cal	00:12	85.2			HPF	cal							Yes
0008	Alpha Bright Cal	00:14	85.2			HPF	cal							Yes
0009	LFC FCU	00:17	106.5			HPF	cal							Yes
0010	LFC FCU	00:19	106.5			HPF	cal							Yes
0011	LFC Cal	00:22	106.5			HPF	cal							Yes
0012	LFC Cal	00:24	106.5			HPF	cal							Yes
0013	Etalon Cal	00:27	159.8			HPF	cal							Yes
0014	UNe Slave Cal	00:31	426			HPF	cal							Yes
lrs20000001_01	flat_Qth_R	00:32	15			LRS2	cal							Yes
lrs20000001_02	flat_Qth_R	00:33	15			LRS2	cal							Yes
lrs20000001_03	flat_Qth_R	00:35	15			LRS2	cal							Yes
lrs20000001_04	flat_Qth_R	00:36	15			LRS2	cal							Yes
lrs20000001_05	flat_Qth_R	00:37	15			LRS2	cal							Yes
0015	UNe Slave Cal	00:38	426			HPF	cal							Yes
lrs20000002_01	flat_ldls_long_B	00:38	20			LRS2	cal							Yes
lrs20000002_02	flat_ldls_long_B	00:40	20			LRS2	cal							Yes
lrs20000002_03	flat_ldls_long_B	00:41	20			LRS2	cal							Yes
lrs20000003_01	Cd-A_B	00:42	29			LRS2	cal							Yes
lrs20000003_02	Cd-A_B	00:44	29			LRS2	cal							Yes
lrs20000003_03	Cd-A_B	00:45	29			LRS2	cal							Yes
0016	UNe Slave Cal	00:46	426			HPF	cal							Yes
lrs20000004_01	FeAr_R	00:47	15			LRS2	cal							Yes
lrs20000004_02	FeAr_R	00:48	15			LRS2	cal							Yes
lrs20000004_03	FeAr_R	00:49	15			LRS2	cal							Yes
lrs20000005_01	Hg_R	00:50	20			LRS2	cal							Yes
lrs20000005_02	Hg_R	00:52	20			LRS2	cal							Yes
lrs20000005_03	Hg_R	00:53	20			LRS2	cal							Yes
0017	UNe Slave Cal	00:54	426			HPF	cal							Yes
lrs20000006_01	Hg_B	00:54	15			LRS2	cal							Yes
lrs20000006_02	Hg_B	00:55	15			LRS2	cal							Yes
lrs20000006_03	Hg_B	00:57	15			LRS2	cal							Yes
0018	UNe Slave Cal	01:02	426			HPF	cal							Yes
virus0000001_01	flat_ldls_long	01:03	15			VIRUS	cal							Yes
virus0000001_02	flat_ldls_long	01:05	15			VIRUS	cal							Yes
virus0000001_03	flat_ldls_long	01:06	15			VIRUS	cal							Yes
virus0000002_01	Cd-A	01:07	15			VIRUS	cal							Yes
virus0000002_02	Cd-A	01:09	15			VIRUS	cal							Yes
0019	UNe Slave Cal	01:10	426			HPF	cal							Yes
virus0000002_03	Cd-A	01:10	15			VIRUS	cal							Yes
virus0000003_01	Hg	01:12	15			VIRUS	cal							Yes
virus0000003_02	Hg	01:13	15			VIRUS	cal							Yes
virus0000003_03	Hg	01:14	15			VIRUS	cal							Yes
0020	twilight	01:30	298.2			HPF	cal					573		Yes
lrs20000007_01	skyflat	01:38	7			LRS2	cal							Yes
lrs20000008_01	skyflat	01:39	10			LRS2	cal							Yes
lrs20000009_01	skyflat	01:40	13			LRS2	cal							Yes
lrs20000010_01	skyflat	01:42	16			LRS2	cal							Yes
lrs20000011_01	skyflat	01:43	22			LRS2	cal							Yes
lrs20000012_01	skyflat	01:44	30			LRS2	cal							Yes
virus0000004_01	skyflat	01:47	7			VIRUS	cal							Yes
virus0000005_01	skyflat	01:48	10			VIRUS	cal							Yes
virus0000006_01	skyflat	01:50	14			VIRUS	cal							Yes
virus0000007_01	skyflat	01:51	18			VIRUS	cal							Yes
virus0000008_01	skyflat	01:52	26			VIRUS	cal							Yes
lrs20000013_01	bias	01:54	0			LRS2	cal							Yes
virus0000009_01	bias	01:54	0			VIRUS	cal							Yes
lrs20000013_02	bias	01:55	0			LRS2	cal							Yes
lrs20000013_03	bias	01:55	0			LRS2	cal							Yes
virus0000009_02	bias	01:55	0			VIRUS	cal							Yes
virus0000009_03	bias	01:56	0			VIRUS	cal							Yes
lrs20000013_04	bias	01:56	0			LRS2	cal							Yes
virus0000009_04	bias	01:57	0			VIRUS	cal							Yes
lrs20000013_05	bias	01:57	0			LRS2	cal							Yes
virus0000009_05	bias	01:57	0			VIRUS	cal							Yes
lrs20000013_06	bias	01:58	0			LRS2	cal							Yes
virus0000009_06	bias	01:58	0			VIRUS	cal							Yes
lrs20000013_07	bias	01:59	0			LRS2	cal							Yes
virus0000009_07	bias	01:59	0			VIRUS	cal							Yes
lrs20000013_08	bias	02:00	0			LRS2	cal							Yes
virus0000009_08	bias	02:00	0			VIRUS	cal							Yes
lrs20000013_09	bias	02:01	0			LRS2	cal							Yes
virus0000009_09	bias	02:01	0			VIRUS	cal							Yes
lrs20000013_10	bias	02:02	0			LRS2	cal							Yes
virus0000009_10	bias	02:02	0			VIRUS	cal							Yes
lrs20000013_11	bias	02:03	0			LRS2	cal							Yes
virus0000009_11	bias	02:03	0			VIRUS	cal							Yes
lrs20000014_01	dark	02:03	360			LRS2	cal							Yes
virus0000010_01	dark	02:04	360			VIRUS	cal							Yes
lrs20000014_02	dark	02:10	360			LRS2	cal							Yes
virus0000010_02	dark	02:11	360			VIRUS	cal							Yes
lrs20000014_03	dark	02:17	360			LRS2	cal							Yes
virus0000010_03	dark	02:17	360			VIRUS	cal							Yes
0021	LFC Cal	02:44	106.5			HPF	cal							Yes
0022	LFC Cal	02:46	106.5			HPF	cal							Yes
0023	LFC Cal	02:48	106.5			HPF	cal							Yes
0024	QID 796	03:09	308.9	3.9	UT26-2-005	HPF	sci	2.07	1.92	20.27	0.89	256		Yes
virus0000011_01	parallel	03:09	1417			VIRUS	sci							Yes
0025	QID 796	03:15	308.9	0.9	UT26-2-005	HPF	sci	2.37	2.26	20.27	0.86	230		Yes
0026	QID 796	03:21	308.9	0.9	UT26-2-005	HPF	sci	2.05	1.48	20.29	0.87	271		Yes
0027	QID 796	03:26	308.9	0.9	UT26-2-005	HPF	sci	2.02	1.30	20.27	0.89	257		Yes
0028	QID 153	03:39	106.5	7.2	UT26-2-011	HPF	sci	1.60	1.31	20.19	0.85	331		Yes
0029	LFC Cal	03:46	106.5			HPF	cal							Yes
lrs20000015_01	parallel	03:46	360			LRS2	sci							Yes
virus0000012_01	QID 547	03:46	360	5.0	UT26-2-016	VIRUS	sci	1.83	1.39	21.56	0.49		clouds	No
0030	LFC Cal	03:49	106.5			HPF	cal							Yes
lrs20000015_02	parallel	03:53	360			LRS2	sci							Yes
virus0000012_02	QID 547	03:53	360	1.0	UT26-2-016	VIRUS	sci	1.83	1.16	21.49	0.33			No
lrs20000015_03	parallel	04:00	360			LRS2	sci							Yes
virus0000012_03	QID 547	04:00	360	1.0	UT26-2-016	VIRUS	sci	1.95	1.16	21.49	0.33			No
virus0000013_01	parallel	04:20	1200			VIRUS	sci							Yes
0031	LFC Cal	04:21	106.5			HPF	cal							Yes
lrs20000016_01	QID 467	04:21	1200	15.0	UT26-2-008	LRS2-B	sci	1.95	1.38	21.67	0.45		clouds	No
0032	LFC Cal	04:23	106.5			HPF	cal							Yes
0033	LFC Cal	04:25	106.5			HPF	cal							Yes
virus0000014_01	parallel	05:01	1200			VIRUS	sci							Yes
0034	LFC Cal	05:02	106.5			HPF	cal							Yes
lrs20000017_01	QID 467	05:02	1200	2.0	UT26-2-008	LRS2-B	sci	2.01	1.16	21.89	0.73			Yes
0035	LFC Cal	05:04	106.5			HPF	cal							Yes
0036	LFC Cal	05:06	106.5			HPF	cal							Yes
virus0000015_01	parallel	05:28	2497			VIRUS	eng							Yes
0037	AD_Leo	05:29	159.8	6.3	ENG26-2-000	HPF	eng	2.29	1.53	19.88	0.76	256	clouds at the end	No
0038	AD_Leo	05:32	159.8	1.3	ENG26-2-000	HPF	eng	2.37	1.29	19.79	0.70	249		No
0039	AD_Leo	05:35	159.8	0.3	ENG26-2-000	HPF	eng	2.41	1.84	19.84	0.77	259		No
0040	AD_Leo	05:38	159.8	0.3	ENG26-2-000	HPF	eng	2.32	1.89	19.91	0.82	294		No
0041	AD_Leo	05:42	159.8	0.3	ENG26-2-000	HPF	eng	2.10	1.29	19.95	0.87	330		No
0042	AD_Leo	05:45	159.8	0.3	ENG26-2-000	HPF	eng	2.20	1.41	19.90	0.80	318		No
0043	AD_Leo	05:48	159.8	1.3	ENG26-2-000	HPF	eng	2.10	1.47	19.63	0.51	252		No
0044	AD_Leo	05:51	159.8	0.3	ENG26-2-000	HPF	eng	2.05	1.25	19.64	0.48	258		No
0045	AD_Leo	05:54	159.8	0.3	ENG26-2-000	HPF	eng	2.11	1.22	19.66	0.47	253		No
0046	AD_Leo	05:58	159.8	0.3	ENG26-2-000	HPF	eng	2.07	1.05	19.69	0.59	266		No
0047	AD_Leo	06:01	159.8	0.3	ENG26-2-000	HPF	eng	1.99	1.04	19.55	0.16	138		No
0048	LFC Cal	06:05	106.5			HPF	cal							Yes
0049	LFC Cal	06:13	106.5			HPF	cal							Yes
virus0000016_01	parallel	06:13	1510			VIRUS	sci							Yes
lrs20000018_01	QID 8	06:13	1510	9.8	PSU26-2-005	LRS2-B	sci	2.28	1.44	21.74	0.55			Yes
0050	LFC Cal	06:15	106.5			HPF	cal							Yes
0051	LFC Cal	06:18	106.5			HPF	cal							Yes
0052	QID 167	07:31	127.8	5.9	UT26-2-011	HPF	sci	1.65	1.09	19.83	0.31	94	clouds	No
virus0000017_01	parallel	07:39	1023			VIRUS	sci							Yes
0053	QID 113	07:40	969.1	6.8	UT26-2-019	HPF	sci	1.68	1.11	20.26	0.82	334		Yes
0054	LFC Cal	07:58	106.5			HPF	cal							Yes
0055	QID 803	08:05	969.1	9.8	PSU26-2-015	HPF	sci	1.90	1.13	20.14	0.89	126		Yes
virus0000018_01	parallel	08:05	2047			VIRUS	sci							Yes
0056	QID 803	08:22	969.1	0.8	PSU26-2-015	HPF	sci	1.90	1.20	20.12	0.87	125		Yes
0057	LFC Cal	08:40	106.5			HPF	cal							Yes
virus0000019_01	parallel	08:45	2047			VIRUS	sci							Yes
0058	QID 804	08:46	969.1	6.8	PSU26-2-015	HPF	sci	1.67	1.11	20.03	0.71	80		Yes
0059	QID 804	09:03	969.1	0.8	PSU26-2-015	HPF	sci	1.71	0.98	20.11	0.86	73		Yes
0060	LFC Cal	09:21	106.5			HPF	cal							Yes
lrs20000019_01	QID 375	09:25	180	6.0	UT26-2-017	LRS2-B	sci	1.87	1.18	21.87	0.85			Yes
0061	LFC Cal	09:26	106.5			HPF	cal							Yes
0062	LFC Cal	09:32	106.5			HPF	cal							Yes
virus0000020_01	parallel	09:32	360			VIRUS	sci							Yes
lrs20000020_01	QID 376	09:32	360	4.0	UT26-2-017	LRS2-R	sci	1.94	1.06	20.63	0.73			Yes
0063	LFC Cal	09:35	106.5			HPF	cal							Yes
lrs20000021_01	HD116405_056_W	09:43	15	4.8		LRS2	spec	1.81	1.09	21.78	0.24			Yes
lrs20000022_01	HD116405_066_W	09:47	15	3.8		LRS2	spec	1.83	1.28	20.62	1.02			Yes
0064	HR6684_tell_std	09:56	330.2	8.5		HPF	telluric	1.85	1.48	19.89	0.95			Yes
virus0000021_01	parallel	10:09	1023			VIRUS	sci							Yes
0065	QID 101	10:10	969.1	8.8	UT26-2-019	HPF	sci	1.73	1.16	19.98	0.95	323		Yes
0066	LFC Cal	10:27	106.5			HPF	cal							Yes
0067	QID 183	10:35	85.2	9.6	UT26-2-011	HPF	sci	2.05	1.17	20.00	0.58	184		Yes
lrs20000023_01	QID 395	10:42	180	5.0	UT26-2-017	LRS2-B	sci	2.14	1.10	21.56	0.77			Yes
0068	LFC Cal	10:43	106.5			HPF	cal							Yes
virus0000022_01	parallel	10:48	360			VIRUS	sci							Yes
0069	LFC Cal	10:49	106.5			HPF	cal							Yes
lrs20000024_01	QID 396	10:49	360	4.0	UT26-2-017	LRS2-R	sci	1.87	1.13	20.11	0.94			Yes
0070	LFC Cal	10:51	106.5			HPF	cal							Yes
0071	LFC Cal	11:00	106.5			HPF	cal							Yes
lrs20000025_01	QID 393	11:00	180	5.0	UT26-2-017	LRS2-B	sci	2.05	1.57	21.58	0.67			Yes
virus0000023_01	parallel	11:06	360			VIRUS	sci							Yes
lrs20000026_01	QID 394	11:06	360	3.0	UT26-2-017	LRS2-R	sci	2.02	1.53	20.51	0.82			Yes
0072	LFC Cal	11:07	106.5			HPF	cal							Yes
0073	LFC Cal	11:09	106.5			HPF	cal							Yes
virus0000024_01	parallel	11:19	374			VIRUS	sci							Yes
0074	QID 629	11:20	340.8	8.3	PSU26-2-014	HPF	sci	1.91	1.70	19.52	0.92	388		P4
lrs20000027_01	bias	11:27	0			LRS2	cal							Yes
virus0000025_01	bias	11:28	0			VIRUS	cal							Yes
virus0000026_01	Cd-A	11:32	15		ENG26-2-002	VIRUS	cal							Yes
virus0000027_01	Hg	11:34	15		ENG26-2-002	VIRUS	cal							Yes
0075	Dark	11:44	319.5			HPF	cal							Yes
0076	Quartz FCU	11:56	74.5			HPF	cal							Yes
0077	Quartz FCU	11:58	74.5			HPF	cal							Yes
0078	Quartz FCU	11:59	74.5			HPF	cal							Yes
0079	Quartz FCU	12:01	74.5			HPF	cal							Yes
0080	Quartz FCU	12:03	74.5			HPF	cal							Yes
0081	Quartz FCU	12:05	74.5			HPF	cal							Yes
0082	Quartz FCU	12:06	74.5			HPF	cal							Yes
0083	Alpha Bright Cal	12:09	85.2			HPF	cal							Yes
0084	Alpha Bright Cal	12:11	85.2			HPF	cal							Yes
0085	Alpha Bright Cal	12:13	85.2			HPF	cal							Yes
0086	Alpha Bright Cal	12:15	85.2			HPF	cal							Yes
0087	LFC FCU	12:17	106.5			HPF	cal							Yes
0088	LFC FCU	12:20	106.5			HPF	cal							Yes
0089	LFC FCU	12:22	106.5			HPF	cal							Yes
0090	LFC FCU	12:24	106.5			HPF	cal							Yes
0091	LFC FCU	12:27	106.5			HPF	cal							Yes
0092	LFC FCU	12:29	106.5			HPF	cal							Yes
0093	LFC Cal	12:32	106.5			HPF	cal							Yes
0094	LFC Cal	12:34	106.5			HPF	cal							Yes
0095	Etalon Cal	12:42	159.8			HPF	cal							Yes
0096	Etalon Cal	12:45	159.8			HPF	cal							Yes
0097	Etalon Cal	12:48	159.8			HPF	cal							Yes
0098	Etalon Cal	12:51	159.8			HPF	cal							Yes
0099	UNe Slave Cal	12:55	426			HPF	cal							Yes
0100	UNe Slave Cal	13:03	426			HPF	cal							Yes
0101	UNe Slave Cal	13:11	426			HPF	cal							Yes
0102	UNe Slave Cal	13:18	426			HPF	cal							Yes
0103	UNe Slave Cal	13:26	426			HPF	cal							Yes
0104	UNe Slave Cal	13:34	426			HPF	cal							Yes
0072	LFC Cal	23:17	106.5			HPF	cal							Yes
lrs20009900_01	bias	23:28	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	23:29	20			VIRUS	cal							Yes
virus0009901_01	bias	23:30	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	23:31	20			LRS2	cal							Yes
virus0009902_01	dark	23:32	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	23:33	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	23:35	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	23:36	15			LRS2	cal							Yes
0073	Dark	23:49	319.5			HPF	cal							Yes
0074	Quartz FCU	23:56	74.5			HPF	cal							Yes
0075	Quartz FCU	23:57	74.5			HPF	cal							Yes
0076	Quartz FCU	23:59	74.5			HPF	cal							Yes