Known history

When	Where	Who	What
20130215	OAA	JZ, GOX	Delivered
20131011	OAA	GOX	Upgrade of the electronic panel on the external side
20131202	OAA	GOX	Repumped and ??
20140114	OAA	MB, JZ, TM	Removed from LgswUnitDX
20140130	OAA	GOX	Ship to MPE.
20150209	OAA	MB, GOX	Ship to INAF, installed to SX.
20151017	LBT	GOX	Update software and aligned Kontron to WFS camera #2 (see instructions here)
20150308	LBT	GOX, TM, GR	pumping camera
20150511	LBT	TM, MB	pumping camera
20150515	LBT	TM, SR	pumping camera
20161021	LBT	TM	Pressure read 30 mbar
20170501	LBT	MR, MB	This camera is leaking, It is now routinely pumped every day
20170712	LBT	HG	Perfomed leak check and found leak in the housekeeping connector. Applied Apiezon Q sealant around it with good results.
20180210	LBT	GR	Pressure was 12 mbar. Pumped down to 0.5 mbar. Last reading was 0.62 mbar
20181129	LBT	GR	Pressure was 54 mbar. Pumped down to 0.45 mbar (15 minutes). 5 minutes after closing the valve the reading was 0.55 mbar
20190815	LBT	GR	Pressure was 84 mbar. Pumped down to 0.58 mbar (10 minutes). 5 minutes after closing the valve the reading was 0.94 mbar
20200306	LBT	GR, CB	Pressure was 49-54 mbar (reading was changing). Pumped for 1 hour down to 0.43 mbar
20200903	LBT	CB	Pressure was >80 mbar. Pumped for 1 hour down to 0.41 mbar
20210120	LBT	CB	Pressure was 45-50 mbar. Pumped for 1 hour.
20210624	LBT	GR	Pressure was 67 mbar. Pumped for 2 hours down to 0.45 mbar
20210928	LBT	CB	Pressure was >50 mbar. Pumped down to 0.69 mbar (had to stop for rain needing telescope at horizon)
20220216	LBT	CB	Starting pressure was 42 mbar. Pumped down to 5.7 x10 -1
20220622	LBT	CB	Pressure at 43mbar.Down to 0.2mbar

Known issues

When	What
20130215	Pressure sensor is miscalibrated (?). Typically stays at 0.2mbar and shows no variations at all
20130819	Pressure too high. Sensor passes from 0.2mbar to 7000mbar
20130828	Pumped. Diagnostic is now ok. Camera is apparently working ok
20131205	Horizontal Stripes effect began. See emails
20131223	CCD cannot be powered up. A current value is too high. See emals
20131230	A bent pin in the sequencer cable is found. See emails
20150304	ErrorCamera at startup: ThingsThatIDontUnderstand0010
20170501	The camera leak progressively got worse and camera needs to be pumped more often. In May17 run (DiaryRun16) the camera was pumped every day

Pressure sensor

The pressure sensor of this camera appears to be miscalibrated. Its floor value is 0.2mbar and it appears quite unsensitive to all changes. It passed suddenly to 7 bar!. It appears not linear at all.

When	Where	Pressure from pressure gauge	Pressure camera sensor (Voltage reading, converted in mbar)	Humidity raw value (water cooling only, at -20C, max value when warming up)	Comments
20151017	LBT	4 mbar	-	-	-
20150308	LBT	54 mbar	49.5 mbar	-	Maintenance, camera pumped down to ~1mbar
20150313(?)	LBT	~25	~10 mbar (?)	-	Maintenance, camera pumped down to ~1mbar for ~30min
20150313(?)+1	LBT	~5 mbar		-
20150511	LBT	??		-	Maintenance, camera pumped down to ~1mbar
20150516	LBT	12 mbar	7.644 mbar	-	Maintenance, camera pumped down to ~1mbar
20180210	LBT	12 mbar	-	-	Maintenance, camera pumped down to 0.5 mbar
20190815	LBT	84 mbar	-	-	Maintenance, camera pumped down to 0.58 mbar
20200306	LBT	49-54 mbar (changing)	50 mbar	-	Maintenance, camera pumped down to 0.43 mbar (after 1 hour)
20200903	LBT	>80 mbar	80 mbar	40%	Maintenance, camera pumped down to 0.41 mbar (after 1 hour)
20210120	LBT	?	47 mbar	75%	Maintenance, camera pumped for 1 hour.
20210624	LBT	67 mbar	?	45%	Maintenance, camera pumped for 2 hours to 0.45 mbar
20210928	LBT	?	>50 mbar	90%	Maintenance, camera pumped to 0.69 mbar
20220216	LBT	42 mbar	?	55%	Maintenance, camera pumped to 0.57 mbar
20220622	LBT		43mbar	50%	Maintenance, camera pumped to 0.02 mbar

Maintenance

See WfsCamera

List of components devices