HET Night Report Reader

Civil Date	Ephemerides
2026-04-13	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:30	02:16	02:46	11:05	11:35	12:23	10:44	-
Night Length	8:19		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
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
01:23	18.6	16.3	02:28	clouds	01:05
06:57	16.9	13.9	08:59	clouds	02:02
09:34	15.8	15.5	11:33	twilight	01:59
Total Time Open					5:06

Program	Night Priority	Science
02:46	Idle due to weather (clouds)
08:15	Science
08:20	Idle due to weather (clouds)
09:52	Science

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:55	02:27	0.64	1.15	125	-6016	18.3	15.2	15.7	240	9	First of Night
11:27	11:32	0.75	1.29	350	-5113	14.7	15.2	15.3	279	11	Post-Observing

Problem Reports					no PRs

TO Comments	Unable to take twilight PVs due to clouds. Cloudy and calm night.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
0001	UNe Slave Cal	00:00	426			HPF	cal							Yes
virus0000034_02	Cd-A	00:00	15			VIRUS	cal							Yes
virus0000034_03	Cd-A	00:01	15			VIRUS	cal							Yes
virus0000035_01	Hg	00:03	15			VIRUS	cal							Yes
virus0000035_02	Hg	00:04	15			VIRUS	cal							Yes
virus0000035_03	Hg	00:05	15			VIRUS	cal							Yes
lrs20000001_01	bias	00:07	0			LRS2	cal							Yes
virus0000001_01	bias	00:07	0			VIRUS	cal							Yes
lrs20000001_02	bias	00:08	0			LRS2	cal							Yes
virus0000001_02	bias	00:08	0			VIRUS	cal							Yes
lrs20000001_03	bias	00:08	0			LRS2	cal							Yes
lrs20000001_04	bias	00:09	0			LRS2	cal							Yes
virus0000001_03	bias	00:09	0			VIRUS	cal							Yes
virus0000001_04	bias	00:10	0			VIRUS	cal							Yes
lrs20000001_05	bias	00:10	0			LRS2	cal							Yes
virus0000001_05	bias	00:11	0			VIRUS	cal							Yes
lrs20000001_06	bias	00:11	0			LRS2	cal							Yes
virus0000001_06	bias	00:11	0			VIRUS	cal							Yes
lrs20000001_07	bias	00:12	0			LRS2	cal							Yes
virus0000001_07	bias	00:12	0			VIRUS	cal							Yes
lrs20000001_08	bias	00:13	0			LRS2	cal							Yes
virus0000001_08	bias	00:13	0			VIRUS	cal							Yes
lrs20000001_09	bias	00:14	0			LRS2	cal							Yes
virus0000001_09	bias	00:14	0			VIRUS	cal							Yes
lrs20000001_10	bias	00:15	0			LRS2	cal							Yes
virus0000001_10	bias	00:15	0			VIRUS	cal							Yes
lrs20000001_11	bias	00:16	0			LRS2	cal							Yes
virus0000001_11	bias	00:16	0			VIRUS	cal							Yes
lrs20000002_01	dark	00:16	360			LRS2	cal							Yes
virus0000002_01	dark	00:17	360			VIRUS	cal							Yes
lrs20000002_02	dark	00:23	360			LRS2	cal							Yes
virus0000002_02	dark	00:24	360			VIRUS	cal							Yes
lrs20000002_03	dark	00:30	360			LRS2	cal							Yes
virus0000002_03	dark	00:30	360			VIRUS	cal							Yes
lrs20000003_01	skyflat	01:35	7			LRS2	cal							Yes
lrs20000004_01	skyflat	01:36	10			LRS2	cal							Yes
lrs20000005_01	skyflat	01:37	13			LRS2	cal							Yes
lrs20000006_01	skyflat	01:38	16			LRS2	cal							Yes
lrs20000007_01	skyflat	01:40	22			LRS2	cal							Yes
lrs20000008_01	skyflat	01:41	30			LRS2	cal							Yes
virus0000003_01	skyflat	01:43	7			VIRUS	cal							Yes
virus0000004_01	skyflat	01:45	10			VIRUS	cal							Yes
virus0000005_01	skyflat	01:46	14			VIRUS	cal							Yes
virus0000006_01	skyflat	01:47	18			VIRUS	cal							Yes
virus0000007_01	skyflat	01:49	26			VIRUS	cal							Yes
lrs20000009_01	parallel	07:20	360			LRS2	sci							Yes
virus0000008_01	QID 551	07:20	360	3.0	UT26-2-016	VIRUS	sci	1.90		22.09	0.41			No
0002	LFC Cal	07:21	106.5			HPF	cal							Yes
0003	LFC Cal	07:23	106.5			HPF	cal							Yes
lrs20000009_02	parallel	07:28	360			LRS2	sci							Yes
virus0000008_02	QID 551	07:28	360	2.0	UT26-2-016	VIRUS	sci	1.82		22.15	0.53			No
lrs20000009_03	parallel	07:35	360			LRS2	sci							Yes
virus0000008_03	QID 551	07:35	360	1.0	UT26-2-016	VIRUS	sci	1.76		22.11	0.32			No
0004	QID 77	08:19	42.6	4.3	UT26-2-019	HPF	sci	1.56		20.12	0.76	533		Yes
0005	LFC Cal	08:21	106.5			HPF	cal							Yes
virus0000009_01	parallel	08:37	1800			VIRUS	sci							Yes
lrs20000010_01	QID 465	08:37	1800	7.0	UT26-2-018	LRS2-B	sci	1.49		22.32	0.62		cloud rolled in and had to close dome partway through first observation in sequence	No
0006	LFC Cal	08:38	106.5			HPF	cal							Yes
0007	LFC Cal	08:40	106.5			HPF	cal							Yes
0008	LFC Cal	08:42	106.5			HPF	cal							Yes
0009	LFC Cal	09:56	106.5			HPF	cal							Yes
lrs20000011_01	parallel	09:56	1000			LRS2	sci							Yes
virus0000010_01	QID 221	09:56	1000	3.3	PSU26-2-003	VIRUS	sci	1.66		22.35	0.79			Yes
0010	LFC Cal	09:58	106.5			HPF	cal							Yes
0011	LFC Cal	10:01	106.5			HPF	cal							Yes
lrs20000011_02	parallel	10:14	1000			LRS2	sci							Yes
virus0000010_02	QID 221	10:14	1000	1.3	PSU26-2-003	VIRUS	sci	1.72		22.26	0.80			Yes
lrs20000011_03	parallel	10:32	1000			LRS2	sci							Yes
virus0000010_03	QID 221	10:32	1000	1.3	PSU26-2-003	VIRUS	sci	1.71		22.19	0.62			Yes
0012	LFC Cal	10:54	106.5			HPF	cal							Yes
virus0000011_01	parallel	10:54	1200			VIRUS	sci							Yes
lrs20000012_01	QID 468	10:54	1200	6.0	UT26-2-008	LRS2-B	sci	1.76		22.17	0.76			Yes
0013	LFC Cal	10:57	106.5			HPF	cal							Yes
0014	LFC Cal	10:59	106.5			HPF	cal							Yes
virus0000012_01	1757132_052_E	11:19	60	5.0		VIRUS	spec	2.16		21.37	0.80			Yes
virus0000012_02	1757132_052_E	11:21	60	1.0		VIRUS	spec	2.24		21.10	0.69			Yes
virus0000012_03	1757132_052_E	11:24	60	2.0		VIRUS	spec	2.23		20.83	0.75			Yes
lrs20000013_01	bias	11:27	0			LRS2	cal							Yes
virus0000013_01	bias	11:28	0			VIRUS	cal							Yes
virus0000014_01	Cd-A	11:32	15		ENG26-2-002	VIRUS	cal							Yes
virus0000015_01	Hg	11:34	15		ENG26-2-002	VIRUS	cal							Yes
0015	Dark	11:41	319.5			HPF	cal							Yes
0016	Quartz FCU	11:52	74.5			HPF	cal							Yes
0017	Quartz FCU	11:54	74.5			HPF	cal							Yes
0018	Quartz FCU	11:56	74.5			HPF	cal							Yes
0019	Quartz FCU	11:58	74.5			HPF	cal							Yes
0020	Quartz FCU	12:00	74.5			HPF	cal							Yes
0021	Quartz FCU	12:01	74.5			HPF	cal							Yes
0022	Quartz FCU	12:03	74.5			HPF	cal							Yes
0023	Alpha Bright Cal	12:05	85.2			HPF	cal							Yes
0024	Alpha Bright Cal	12:07	85.2			HPF	cal							Yes
0025	Alpha Bright Cal	12:09	85.2			HPF	cal							Yes
0026	Alpha Bright Cal	12:11	85.2			HPF	cal							Yes
0027	LFC FCU	12:14	106.5			HPF	cal							Yes
0028	LFC FCU	12:16	106.5			HPF	cal							Yes
0029	LFC FCU	12:19	106.5			HPF	cal							Yes
0030	LFC FCU	12:21	106.5			HPF	cal							Yes
0031	LFC FCU	12:23	106.5			HPF	cal							Yes
0032	LFC FCU	12:26	106.5			HPF	cal							Yes
0033	LFC Cal	12:29	106.5			HPF	cal							Yes
0034	LFC Cal	12:31	106.5			HPF	cal							Yes
0035	Etalon Cal	12:39	159.8			HPF	cal							Yes
0036	Etalon Cal	12:42	159.8			HPF	cal							Yes
0037	Etalon Cal	12:45	159.8			HPF	cal							Yes
0038	Etalon Cal	12:48	159.8			HPF	cal							Yes
0039	UNe Slave Cal	12:52	426			HPF	cal							Yes
0040	UNe Slave Cal	12:59	426			HPF	cal							Yes
0041	UNe Slave Cal	13:07	426			HPF	cal							Yes
0042	UNe Slave Cal	13:15	426			HPF	cal							Yes
0043	UNe Slave Cal	13:23	426			HPF	cal							Yes
0044	UNe Slave Cal	13:31	426			HPF	cal							Yes
0088	LFC Cal	22:00	106.5			HPF	cal							Yes
lrs20009900_01	bias	22:07	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:08	20			VIRUS	cal							Yes
virus0009901_01	bias	22:09	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:10	20			LRS2	cal							Yes
virus0009902_01	dark	22:11	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:12	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:14	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:15	15			LRS2	cal							Yes
virus0009907_01	flat_Qth	22:18	20			VIRUS	cal							Yes
virus0009908_01	bias	22:20	0			VIRUS	cal							Yes
virus0009909_01	dark	22:21	15			VIRUS	cal							Yes
0089	Dark	22:39	319.5			HPF	cal							Yes
0090	Quartz FCU	22:46	74.5			HPF	cal							Yes
0091	Quartz FCU	22:48	74.5			HPF	cal							Yes
0092	Quartz FCU	22:49	74.5			HPF	cal							Yes
0093	Quartz FCU	22:51	74.5			HPF	cal							Yes
0094	Quartz FCU	22:53	74.5			HPF	cal							Yes
0095	Quartz FCU	22:55	74.5			HPF	cal							Yes
0096	Quartz FCU	22:57	74.5			HPF	cal							Yes
0097	Alpha Bright Cal	22:59	85.2			HPF	cal							Yes
0098	Alpha Bright Cal	23:01	85.2			HPF	cal							Yes
0099	Alpha Bright Cal	23:03	85.2			HPF	cal							Yes
0100	Alpha Bright Cal	23:05	85.2			HPF	cal							Yes
0101	LFC FCU	23:07	106.5			HPF	cal							Yes
0102	LFC FCU	23:10	106.5			HPF	cal							Yes
0103	LFC Cal	23:13	106.5			HPF	cal							Yes
0104	LFC Cal	23:15	106.5			HPF	cal							Yes
0105	Etalon Cal	23:18	159.8			HPF	cal							Yes
0106	UNe Slave Cal	23:21	426			HPF	cal							Yes
lrs20000035_01	flat_Qth_R	23:23	15			LRS2	cal							Yes
lrs20000035_02	flat_Qth_R	23:24	15			LRS2	cal							Yes
lrs20000035_03	flat_Qth_R	23:26	15			LRS2	cal							Yes
lrs20000035_04	flat_Qth_R	23:27	15			LRS2	cal							Yes
lrs20000035_05	flat_Qth_R	23:28	15			LRS2	cal							Yes
0107	UNe Slave Cal	23:29	426			HPF	cal							Yes
lrs20000036_01	flat_ldls_long_B	23:29	20			LRS2	cal							Yes
lrs20000036_02	flat_ldls_long_B	23:31	20			LRS2	cal							Yes
lrs20000036_03	flat_ldls_long_B	23:32	20			LRS2	cal							Yes
lrs20000037_01	Cd-A_B	23:33	29			LRS2	cal							Yes
lrs20000037_02	Cd-A_B	23:35	29			LRS2	cal							Yes
lrs20000037_03	Cd-A_B	23:36	29			LRS2	cal							Yes
0108	UNe Slave Cal	23:37	426			HPF	cal							Yes
lrs20000038_01	FeAr_R	23:38	15			LRS2	cal							Yes
lrs20000038_02	FeAr_R	23:39	15			LRS2	cal							Yes
lrs20000038_03	FeAr_R	23:40	15			LRS2	cal							Yes
lrs20000039_01	Hg_R	23:41	20			LRS2	cal							Yes
lrs20000039_02	Hg_R	23:43	20			LRS2	cal							Yes
lrs20000039_03	Hg_R	23:44	20			LRS2	cal							Yes
0109	UNe Slave Cal	23:45	426			HPF	cal							Yes
lrs20000040_01	Hg_B	23:45	15			LRS2	cal							Yes
lrs20000040_02	Hg_B	23:46	15			LRS2	cal							Yes
lrs20000040_03	Hg_B	23:48	15			LRS2	cal							Yes
0110	UNe Slave Cal	23:52	426			HPF	cal							Yes
virus0000033_01	flat_ldls_long	23:54	15			VIRUS	cal							Yes
virus0000033_02	flat_ldls_long	23:56	15			VIRUS	cal							Yes
virus0000033_03	flat_ldls_long	23:57	15			VIRUS	cal							Yes
virus0000034_01	Cd-A	23:58	15			VIRUS	cal							Yes