HET Night Report Reader

Civil Date	Ephemerides
2026-04-28	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	01:40	02:28	02:59	10:46	11:18	12:07	-	10:47
Night Length	7:47		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator
Zach Vanderbosch	Amy Westfall

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:37	21.8	20.8	06:12	clouds	04:35
Total Time Open					4:35

Program	Night Priority	Science
02:59	Science
04:33	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
02:11	02:44	0.82	1.38	-230	-1184	21.0	20.7	20.5	278	13	First of Night

Problem Reports					no PRs

TO Comments	Heavy clouds and radar signature in county for much of night.

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge
lrs20000009_02	dark	00:05	360			LRS2	cal							Yes
virus0000008_02	dark	00:05	360			VIRUS	cal							Yes
lrs20000009_03	dark	00:11	360			LRS2	cal							Yes
virus0000008_03	dark	00:12	360			VIRUS	cal							Yes
lrs20000001_01	skyflat	01:46	7			LRS2	cal							Yes
lrs20000002_01	skyflat	01:47	10			LRS2	cal							Yes
lrs20000003_01	skyflat	01:48	13			LRS2	cal							Yes
lrs20000004_01	skyflat	01:50	16			LRS2	cal							Yes
lrs20000005_01	skyflat	01:51	22			LRS2	cal							Yes
lrs20000006_01	skyflat	01:52	30			LRS2	cal							Yes
virus0000001_01	skyflat	01:55	7			VIRUS	cal							Yes
virus0000002_01	skyflat	01:56	10			VIRUS	cal							Yes
virus0000003_01	skyflat	01:57	14			VIRUS	cal							Yes
virus0000004_01	skyflat	01:59	18			VIRUS	cal							Yes
virus0000005_01	skyflat	02:00	26			VIRUS	cal							Yes
0001	QID 93	02:52	969.1	7.8	UT26-2-019	HPF	sci	2.13		18.07	0.54	115		Yes
virus0000006_01	parallel	02:52	1023			VIRUS	sci							Yes
0002	LFC Cal	03:10	106.5			HPF	cal							Yes
virus0000007_01	parallel	03:17	891			VIRUS	sci							Yes
0003	QID 91	03:18	841.4	10.0	UT26-2-019	HPF	sci	1.96		19.21	0.84	390		P4
0004	LFC Cal	03:34	106.5			HPF	cal							Yes
0005	QID 720	03:39	617.7	7.7	UT26-2-005	HPF	sci	1.87		19.22	0.87	119		P4
virus0000008_01	parallel	03:39	1321			VIRUS	sci							Yes
0006	QID 720	03:51	617.7	0.7	UT26-2-005	HPF	sci	1.92		19.23	0.87	121		P4
0007	QID 717	04:08	308.9	6.9	UT26-2-004	HPF	sci	2.06		18.99	0.63	170		P4
virus0000009_01	parallel	04:08	1060			VIRUS	sci							Yes
0008	QID 717	04:14	308.9	0.9	UT26-2-004	HPF	sci	1.84		18.96	0.62	193		P4
0009	QID 717	04:20	308.9	0.9	UT26-2-004	HPF	sci	1.88		18.91	0.64	180		P4
0010	HR3799_tell_std	04:31	117.2	6.0		HPF	telluric	1.83		18.88	0.75			Yes
virus0000010_01	parallel	04:40	2083			VIRUS	sci							Yes
0011	QID 809	04:41	649.6	7.2	PSU26-2-015	HPF	sci	1.60		16.86	0.51	256	Increasing clouds throughout exposures causing bright sky and low transparency.	No
0012	QID 809	04:52	649.6	1.2	PSU26-2-015	HPF	sci	1.66		17.36	0.70	314		No
0013	QID 809	05:04	649.6	1.2	PSU26-2-015	HPF	sci	1.73		17.55	0.75	258	Transparency much lower than reported, guide stars were lost around 05:11.	No
0014	LFC Cal	05:16	106.5			HPF	cal							Yes
0015	LFC Cal	06:12	106.5			HPF	cal							Yes
0016	LFC Cal	06:15	106.5			HPF	cal							Yes
0017	LFC Cal	06:17	106.5			HPF	cal							Yes
0018	LFC Cal	08:12	106.5			HPF	cal							Yes
0019	LFC Cal	08:15	106.5			HPF	cal							Yes
0020	LFC Cal	08:17	106.5			HPF	cal							Yes
0021	LFC Cal	09:34	106.5			HPF	cal							Yes
0022	LFC Cal	09:36	106.5			HPF	cal							Yes
0023	LFC Cal	09:38	106.5			HPF	cal							Yes
0024	LFC Cal	10:13	106.5			HPF	cal							Yes
0025	LFC Cal	10:16	106.5			HPF	cal							Yes
0026	LFC Cal	10:18	106.5			HPF	cal							Yes
lrs20000007_01	bias	10:21	0			LRS2	cal							Yes
virus0000011_01	bias	10:22	0			VIRUS	cal							Yes
virus0000012_01	Cd-A	10:26	15		ENG26-2-002	VIRUS	cal							Yes
virus0000013_01	Hg	10:27	15		ENG26-2-002	VIRUS	cal							Yes
0027	Dark	10:35	319.5			HPF	cal							Yes
0028	Quartz FCU	10:47	74.5			HPF	cal							Yes
0029	Quartz FCU	10:48	74.5			HPF	cal							Yes
0030	Quartz FCU	10:50	74.5			HPF	cal							Yes
0031	Quartz FCU	10:52	74.5			HPF	cal							Yes
0032	Quartz FCU	10:54	74.5			HPF	cal							Yes
0033	Quartz FCU	10:55	74.5			HPF	cal							Yes
0034	Quartz FCU	10:57	74.5			HPF	cal							Yes
0035	Alpha Bright Cal	10:59	85.2			HPF	cal							Yes
0036	Alpha Bright Cal	11:01	85.2			HPF	cal							Yes
0037	Alpha Bright Cal	11:03	85.2			HPF	cal							Yes
0038	Alpha Bright Cal	11:05	85.2			HPF	cal							Yes
0039	LFC FCU	11:08	106.5			HPF	cal							Yes
0040	LFC FCU	11:10	106.5			HPF	cal							Yes
0041	LFC FCU	11:13	106.5			HPF	cal							Yes
0042	LFC FCU	11:15	106.5			HPF	cal							Yes
0043	LFC FCU	11:17	106.5			HPF	cal							Yes
0044	LFC FCU	11:20	106.5			HPF	cal							Yes
0045	LFC Cal	11:23	106.5			HPF	cal							Yes
0046	LFC Cal	11:25	106.5			HPF	cal							Yes
0047	Etalon Cal	11:33	159.8			HPF	cal							Yes
0048	Etalon Cal	11:36	159.8			HPF	cal							Yes
0049	Etalon Cal	11:39	159.8			HPF	cal							Yes
0050	Etalon Cal	11:42	159.8			HPF	cal							Yes
0051	UNe Slave Cal	11:46	426			HPF	cal							Yes
0052	UNe Slave Cal	11:53	426			HPF	cal							Yes
0053	UNe Slave Cal	12:01	426			HPF	cal							Yes
0054	UNe Slave Cal	12:09	426			HPF	cal							Yes
0055	UNe Slave Cal	12:17	426			HPF	cal							Yes
0056	UNe Slave Cal	12:25	426			HPF	cal							Yes
0052	LFC Cal	21:44	106.5			HPF	cal							Yes
lrs20009900_01	bias	22:10	0			LRS2	cal							Yes
virus0009900_01	flat_Qth	22:11	20			VIRUS	cal							Yes
virus0009901_01	bias	22:13	0			VIRUS	cal							Yes
lrs20009901_01	flat_ldls_long_B	22:13	20			LRS2	cal							Yes
virus0009902_01	dark	22:15	15			VIRUS	cal							Yes
lrs20009902_01	Cd-A_B	22:15	29			LRS2	cal							Yes
lrs20009903_01	FeAr_R	22:17	15			LRS2	cal							Yes
lrs20009904_01	Hg_B	22:18	15			LRS2	cal							Yes
0053	Dark	22:21	319.5			HPF	cal							Yes
0054	Quartz FCU	22:28	74.5			HPF	cal							Yes
0055	Quartz FCU	22:29	74.5			HPF	cal							Yes
0056	Quartz FCU	22:31	74.5			HPF	cal							Yes
0057	Quartz FCU	22:33	74.5			HPF	cal							Yes
0058	Quartz FCU	22:35	74.5			HPF	cal							Yes
0059	Quartz FCU	22:36	74.5			HPF	cal							Yes
0060	Quartz FCU	22:38	74.5			HPF	cal							Yes
0061	Alpha Bright Cal	22:41	85.2			HPF	cal							Yes
0062	Alpha Bright Cal	22:43	85.2			HPF	cal							Yes
0063	Alpha Bright Cal	22:44	85.2			HPF	cal							Yes
0064	Alpha Bright Cal	22:46	85.2			HPF	cal							Yes
0065	LFC FCU	22:49	106.5			HPF	cal							Yes
0066	LFC FCU	22:51	106.5			HPF	cal							Yes
0067	LFC Cal	22:54	106.5			HPF	cal							Yes
0068	LFC Cal	22:57	106.5			HPF	cal							Yes
0069	Etalon Cal	22:59	159.8			HPF	cal							Yes
0070	UNe Slave Cal	23:03	426			HPF	cal							Yes
lrs20000002_01	flat_Qth_R	23:04	15			LRS2	cal							Yes
lrs20000002_02	flat_Qth_R	23:05	15			LRS2	cal							Yes
lrs20000002_03	flat_Qth_R	23:07	15			LRS2	cal							Yes
lrs20000002_04	flat_Qth_R	23:08	15			LRS2	cal							Yes
lrs20000002_05	flat_Qth_R	23:09	15			LRS2	cal							Yes
lrs20000003_01	flat_ldls_long_B	23:10	20			LRS2	cal							Yes
0071	UNe Slave Cal	23:11	426			HPF	cal							Yes
lrs20000003_02	flat_ldls_long_B	23:12	20			LRS2	cal							Yes
lrs20000003_03	flat_ldls_long_B	23:13	20			LRS2	cal							Yes
lrs20000004_01	Cd-A_B	23:14	29			LRS2	cal							Yes
lrs20000004_02	Cd-A_B	23:16	29			LRS2	cal							Yes
lrs20000004_03	Cd-A_B	23:17	29			LRS2	cal							Yes
0072	UNe Slave Cal	23:19	426			HPF	cal							Yes
lrs20000005_01	FeAr_R	23:19	15			LRS2	cal							Yes
lrs20000005_02	FeAr_R	23:20	15			LRS2	cal							Yes
lrs20000005_03	FeAr_R	23:21	15			LRS2	cal							Yes
lrs20000006_01	Hg_R	23:23	20			LRS2	cal							Yes
lrs20000006_02	Hg_R	23:24	20			LRS2	cal							Yes
lrs20000006_03	Hg_R	23:25	20			LRS2	cal							Yes
0073	UNe Slave Cal	23:26	426			HPF	cal							Yes
lrs20000007_01	Hg_B	23:27	15			LRS2	cal							Yes
lrs20000007_02	Hg_B	23:28	15			LRS2	cal							Yes
lrs20000007_03	Hg_B	23:29	15			LRS2	cal							Yes
0074	UNe Slave Cal	23:34	426			HPF	cal							Yes
virus0000004_01	flat_ldls_long	23:36	15			VIRUS	cal							Yes
virus0000004_02	flat_ldls_long	23:37	15			VIRUS	cal							Yes
virus0000004_03	flat_ldls_long	23:39	15			VIRUS	cal							Yes
virus0000005_01	Cd-A	23:40	15			VIRUS	cal							Yes
virus0000005_02	Cd-A	23:41	15			VIRUS	cal							Yes
0075	UNe Slave Cal	23:42	426			HPF	cal							Yes
virus0000005_03	Cd-A	23:43	15			VIRUS	cal							Yes
virus0000006_01	Hg	23:44	15			VIRUS	cal							Yes
virus0000006_02	Hg	23:46	15			VIRUS	cal							Yes
virus0000006_03	Hg	23:47	15			VIRUS	cal							Yes
lrs20000008_01	bias	23:48	0			LRS2	cal							Yes
virus0000007_01	bias	23:49	0			VIRUS	cal							Yes
lrs20000008_02	bias	23:49	0			LRS2	cal							Yes
virus0000007_02	bias	23:49	0			VIRUS	cal							Yes
lrs20000008_03	bias	23:50	0			LRS2	cal							Yes
virus0000007_03	bias	23:50	0			VIRUS	cal							Yes
lrs20000008_04	bias	23:51	0			LRS2	cal							Yes
virus0000007_04	bias	23:51	0			VIRUS	cal							Yes
lrs20000008_05	bias	23:52	0			LRS2	cal							Yes
virus0000007_05	bias	23:52	0			VIRUS	cal							Yes
lrs20000008_06	bias	23:53	0			LRS2	cal							Yes
lrs20000008_07	bias	23:53	0			LRS2	cal							Yes
virus0000007_06	bias	23:53	0			VIRUS	cal							Yes
virus0000007_07	bias	23:54	0			VIRUS	cal							Yes
lrs20000008_08	bias	23:54	0			LRS2	cal							Yes
virus0000007_08	bias	23:55	0			VIRUS	cal							Yes
lrs20000008_09	bias	23:55	0			LRS2	cal							Yes
virus0000007_09	bias	23:55	0			VIRUS	cal							Yes
lrs20000008_10	bias	23:56	0			LRS2	cal							Yes
virus0000007_10	bias	23:56	0			VIRUS	cal							Yes
lrs20000008_11	bias	23:57	0			LRS2	cal							Yes
virus0000007_11	bias	23:57	0			VIRUS	cal							Yes
lrs20000009_01	dark	23:58	360			LRS2	cal							Yes
virus0000008_01	dark	23:58	360			VIRUS	cal							Yes