HET Night Report Reader

Civil Date	Ephemerides
2014-12-01	Sunset			Sunrise			Moon
	Set	12°	18°	18°	12°	Rise	Rise	Set
	23:58	00:50	01:19	12:11	12:40	13:33	-	09:41
Night Length	10:52		Sunset Temperature

On-Duty Personnel
Resident Astronomer	Telescope Operator	OPS Engineer	Day Ops
-	Amy Westfall	-	-

Overlaps		none

Other Personnel	none

Guests	none

Open/Close Log
Open time	Outdoor temp	Truss temp	Close time	Reason	Time open
01:26	12.1	13.3	07:06	engineering	05:40
Total Time Open					5:40

Program	Night Priority

Stack Data
Start	Stop	ee50	ee80	Hefi Focus	Mars Focus	Outside Temp	Dome Temp	Truss Temp	Wind Direction	Wind Speed	Stack Type
01:30	04:54	0.74	1.09	-527	-1277	11.1		11.5	211	10	First of Night

Problem Reports
PR Number	Times	Time Lost	Description	Response
3950	06:40-06:40	00:00	Tonight got this same error when enabling track motors-- the UX/LX track RTO lights alternated turning red on subsequent enables, and a velocity error was present on every enable. Had to restart dSpace because tracking and slewing were impossible.

Ops Comments	none

TO Comments	All mirrors stacked. Mirror 91 chronically positions itself about +5 off in Tilt when left to its own devices. Did another set of focus curve measurements at different DMI offsets. Here are the results: DMI offset: 0 / EE50: 0.74 / EE80: 1.09 DMI offset: 100 / EE50: 0.72 / EE80: 1.08 DMI offset: 150 / EE50: 0.67 / EE80: 1.00 DMI offset: 200 / EE50: 0.73 / EE80: 1.08 I took one more measurement at 150 after running curves at all of the above offsets. The was gusting in the mid-20's at this point, while before it had been gusting in the low teens: DMI offset: 150 / EE50: 0.71 / EE80: 1.06 It looks like taking focus ~150 past the DMI recommendation, and then running AOA routine a few times, works well. I also tried a focus curve at DMI recommended focus with the structure positioned at 43.785. That produced EE50: 0.76 and EE80: 1.13

TO Comments

All mirrors stacked. Mirror 91 chronically positions itself about +5 off in Tilt when left to its own devices. Did another set of focus curve measurements at different DMI offsets. Here are the results: DMI offset: 0 / EE50: 0.74 / EE80: 1.09 DMI offset: 100 / EE50: 0.72 / EE80: 1.08 DMI offset: 150 / EE50: 0.67 / EE80: 1.00 DMI offset: 200 / EE50: 0.73 / EE80: 1.08 I took one more measurement at 150 after running curves at all of the above offsets. The was gusting in the mid-20's at this point, while before it had been gusting in the low teens: DMI offset: 150 / EE50: 0.71 / EE80: 1.06 It looks like taking focus ~150 past the DMI recommendation, and then running AOA routine a few times, works well. I also tried a focus curve at DMI recommended focus with the structure positioned at 43.785. That produced EE50: 0.76 and EE80: 1.13

RA Comments	none

Observations
File	Target/QID	Exp Start	Exposure	Overhead	Program	Instrument Configuration	Data Type	IQ	Dimm	SkySBrt	Skytrans	SNR	Comments	Charge

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