1

Extracted Observing Reports for 170.A-0788(B): Night information

Telescope: Yepun (UT4)
Instrument: FORS2
This is a summary of night log information extracted for all those nights which got observations for your run and which are contained in this data delivery.

This information has been extracted from a database which contains information ingested during the nights. The database is also maintained to reflect e.g. a posteriori updates of the OB grading.

This report is structured into two parts:
- breakdown by nights (this page)
- breakdown by OBs.

This page is an extraction of general night information for all nights with OBs in this data delivery. Usually an OB will produce files but there are exceptions, e.g. when an OB is aborted due to degrading conditions. Therefore there might be entries in this nightlog summary which do not correspond to any of the files contained in your data package.

On the other hand there is a small chance of having OBs or files delivered without nightlog entries. The most likely cause could be operational problems during the night.
General information about 170.A-0788(B)
1a | Night summary
Date Comments OBs | grade
(this run only)
2002-10-03 DIMM showed some strange behaviour. There was no variable extinction as indicated
by LOSSAM
129803 | A
129804 | A
129805 | A
129806 | A
2002-10-04 None 129799 | A
129800 | C
129801 | A
129802 | A
2002-10-05 None 129800 | A
2002-11-11 None 130531 | C
2002-12-07 None 130531 | C
130531 | A
130532 | A
130533 | A
130534 | A
2002-12-08 While closed and before official end of night, we tested NACO.
Together with F. Clarke, we could do a full startup and take tests images.
The instrument seems fully operational.
 130535 | A
2002-12-29 None 130543 | A
2003-01-01 None 130544 | A
130545 | A
2003-01-02 None 130536 | A
130537 | A
2003-01-03 Test exposures: FORS2_IMG_CAL003.36* to FORS2_IMG_CAL003.62*. Please disregard.
130538 | A
2003-01-04 None 130540 | A
130541 | A
130542 | A
2003-01-05 Please note that time statistics in last night report have been changed.
 130546 | A
130547 | A
130548 | A
130549 | A
2003-01-06 None 130550 | A
130551 | A
130552 | A
2003-01-29 None 130553 | A
2003-01-30 None 130554 | A
130555 | A
2003-02-03 None 130539 | C
2003-02-06 NACO Tests
Dark frames: NACO_0001 to 0014
Mask frames: Mask_0001 to 0004
Pupil Frames: Lamp_pupil_0001 to 0002
Pupil image of the calibration unit and the illumination level
of the flats look OK.
130539 | A
2003-02-23 Pupil Alignment tests
VIS 14x14 Mode 1-4 VIS
i) Loaded cnmrefDefault_280302.fits
ii) Acquired
iii) Took Pupil_VIS_14x14_default.fits
iv) Loaded cnmrefDefault_pup_5V_280302.fits
v) Took Pupil_VIS_14x14_5V.fits
IR 7x7 Mode 9-2 N20C80
i) Reset the IM lamp
ii) Loaded cnmrefDefault_280302.fits
iii) Acquired
iv) Took Pupil_IR_7x7V1_default.fits
v) Loaded cnmrefDefault_pup_9V_7x7_280302.fits
vi) Took Pupil_IR_7x7V1_9V.fits
130556 | A
2003-02-26 None 130557 | C
2003-07-29 None 130557 | C
2003-07-31 None 130557 | C
130558 | C
132038 | A
2003-08-01 None 132039 | A
132040 | A
2003-08-02 Last night report has been updated as follow:
the 15 min execution downtime have been added to the preparation downtime.
132041 | C
132041 | A
2003-08-28 .
Today & tonight, we experiment network connection problems (actually: no connection at all) with Garching.
Thus, the incremental update for finding charts v1.7 could not be done, and now, at the time to execute the OB 148854, we don't have the finding chart and no connection to Garching to retreive it. The OB has been aborted.
The FORS2 queues are empty until 19 ST (with FORS2), so we switch to NACO for training (which queues are also empty). The telescope should be considered idle (no OBs to execute).
NACO: RTC tstore error, 10 min lost.
145079 | A
145080 | C
2003-08-29 None 145080 | A
145081 | A
145082 | C
2003-08-30 Weather downtime due to thick/thin cirrus and no OBs to execute under these conditions.
Actually, we spend this time to practice with NACO for training purpose.
145082 | A
2003-08-31 10 minutes lost due to MIDAS crash.
Solved by restart of Midas and of the OB 148830.
Weather downtime due to thick/thin cirrus.
No OBs to execute due to the weather.
We spend this time for training on NACO.
 145083 | A
2003-09-02 None 145084 | A
2003-09-21 Details of the night statistics:
UT4 technical = new ONECAL calibration for Nasmyth B (PPR 10815)
FORS2:
technical downtime = PPR 10814 (time that would have been used for FORS2
observations at beginning of night).
Misc = focus change
NACO technical downtime =
10min to go and adjust the regulation valve of Vis WFS (over-cooling) - related to PPR 10810)
30min = PPR 10312
We also had a scanning problem (PPR 10513) but no time has been accounted for that.
 145085 | C
2003-09-22 5min technical downtime related to PPR10826.
Lost entire morning twilight because of clouds.
145085 | C
2003-09-26 None 145085 | A
145086 | A
2003-09-27 None 149186 | A
149187 | A
149188 | A
2003-09-28 None 149189 | A
149190 | A
149191 | A
2003-09-29 None 149192 | A
149193 | A
149196 | A
149197 | A
2003-09-30 Detail of night statistics:
23:57-00:44 FORS2 service
00:44-07:52 NACO service
07:57-09:06 FORS2 service
NACO downtime:
MISC = focus change
technical = 10min (PPRS 10906) + 30min (PPRS 10513)
 149195 | A
2003-10-02 Since we could not observe with NACO (PPR 10923), the visitor run has been changed into a FORS2 service night.
149748 | A
149749 | A
2003-10-03 Detail of downtime:
11min execution downtime: started wrong OB by mistake.
20 min tech. = PPR#10932
Please note that even though tonight is meant to be a NACO visitor night, we do FOSR2 service all night.
There is 9hrs 2 min of 'visitor downtime', due to the on-going cool down of CONICA after the power cut.
149194 | C
149747 | A
2003-10-18 6 min "lost" to take a technical image with HR collimator for TSZ:
Thomas asked to take this image using standard star field for FIMS fine tuning.
149194 | A
2003-11-21 The first part of the night was used to carry out a technical test with NACO, as
requested by C. Lidman. The aim of the test was to check if the counter-chopping is working properly.
130557 | A
149750 | A
149751 | A
2003-11-23 None 149752 | A
2003-11-24 At ~4:45h there was an earthquake. We stopped observing and
the TIO went to the telescope to check that everything was fine
(see PPRS 11419).
We lost a total of 41 minutes: ~15 minutes of the exposure that was running at that moment and ~26 minutes for telescope and instruments inspection.
 149753 | A
2003-11-25 NACO tests done during twilight and thus not reported in the statistics.
132040 | C
2003-12-15 NACO technical =
Tests of chopping/counter-chopping
Acquisition of spectra for new L band spectroscopic modes (for ETC)
149746 | A
151264 | A
2003-12-16 None 130558 | A
132040 | A
2003-12-17 NACO RTC slopes and voltages were measured during morning twilight.
151261 | A
151262 | A
151263 | A
2003-12-18 Daily_Check_AO_Correction failed in third template (first IR WFS template). This template
was skipped and the rest was executed without problems.
 151267 | C
151268 | A
2003-12-19 None 151266 | A
151267 | A
2003-12-20 None 151265 | A
152194 | A
152195 | A
2003-12-21 None 152192 | A
152193 | A
152199 | A
2003-12-22 None 152196 | A
152197 | A
152198 | A
152203 | A
2003-12-23 None 152200 | A
152201 | A
152202 | A
152204 | A
2003-12-24 At the beguinning of the night there were thin cirrus. There were not FORS2 programs requiring such conditions so I started observing with NACO.
We changed to FORS2 at 1:54 UT. It took us 7 minutes to change from NACO to FORS2.
From 00:31 to 00:59 I tried to execute the OB 150649 with NACO.
It was not possible to measure the sky background in the IR WFS, so I aborted the OB and started a new one. The OB 150649 was observed during twilight, so there are not time losses.
 152205 | A
152206 | A
152207 | A
2004-01-17 None 152454 | A
152455 | A
2004-01-18 None 152452 | A
152453 | A
2004-01-19 None 152451 | A
2004-01-20 None 152450 | A
2004-01-21 None 152448 | A
152449 | A
2004-01-22 None 152446 | A
152447 | A
2004-01-23 None 152444 | A
152445 | A
2004-02-20 None 153706 | A

1b | Night details
2002-10-03
Night statistics
Night start : 23:58
Night end : 09:01
Night length: 09:02
Night conditions
Seeing : 0.5-2.4"
Wind : 0-3m/s (N-NW-NE)
Humidity : 3-4%
Temperature: 13-15 deg.C
Comments :
Weather report
23:30 PH : According to Zp on FORS1

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
DIMM showed some strange behaviour. There was no variable extinction as indicated
by LOSSAM
Executed OBs
129803 (UT start 07:05)
129804 (UT start 05:58)
129805 (UT start 04:46)
129806 (UT start 03:17)

2002-10-04
Night statistics
Night start : 23:59
Night end : 08:59
Night length: 09:00
Night conditions
Seeing : 0.36-2.1"
Wind : 0-5 m/s (SE-S)
Humidity : 5-10%
Temperature: 14-16deg.C
Comments :
Weather report
23:30 PH : According to Zp on ISAAC and FORS1

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
129799 (UT start 07:09)
129800 (UT start 07:00)
129801 (UT start 05:57)
129802 (UT start 04:43)

2002-10-05
Night statistics
Night start : 23:59
Night end : 08:58
Night length: 08:58
Night conditions
Seeing : 0.46-1.9"
Wind : 0-5m/s (SE-W-N)
Humidity : 3-5%
Temperature: 12-15deg.C
Comments :
Weather report
23:30 PH : According to Zp on ISAAC

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
129800 (UT start 03:34)

2002-11-11
Night statistics
Night start : 00:26
Night end : 08:25
Night length: 07:58
Night conditions
Seeing : 0.5 - 2.5
Wind : 0 - 10 m/s
Humidity : 6 %
Temperature: 11 - 14 C
Comments :
Weather report
23:30 CL :
00:00 PH : according ISAAC zp
01:00 PH :
03:00 PH :
05:30 PH :
07:00 PH :
09:00 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130531 (UT start 06:01)

2002-12-07
Night statistics
Night start : 00:49
Night end : 08:17
Night length: 07:28
Night conditions
Seeing : 0.8 - 1.9
Wind : 8 - 18 from N
Humidity : 11 - 32 %
Temperature: 9 - 10 C
Comments :
Weather report
23:30 CL WI : wind speed > 12m/s, but < 18 m/s
08:30 CL WI :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130531 (UT start 00:17)
130531 (UT start 01:34)
130532 (UT start 02:22)
130533 (UT start 03:37)
130534 (UT start 05:06)

2002-12-08
Night statistics
Night start : 00:50
Night end : 08:18
Night length: 07:27
Night conditions
Seeing : 1 - 2
Wind : 9 - 20 m/s N
Humidity : 9 - 34%
Temperature: ~ 8 C
Comments :
Weather report
23:30 PH WI :
05:30 CL WI : Telescopes Closed, strong wind >18m/s

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
While closed and before official end of night, we tested NACO.
Together with F. Clarke, we could do a full startup and take tests images.
The instrument seems fully operational.
Executed OBs
130535 (UT start 02:39)

2002-12-29
Night statistics
Night start : 01:01
Night end : 08:27
Night length: 07:26
Night conditions
Seeing : 0.5-2.1 arsec.
Wind : 0-4 m/s (SW-SE-NE)
Humidity : 3-8%
Temperature: 14-16 deg.
Comments :
Weather report
23:40 CL :
01:00 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130543 (UT start 03:37)

2003-01-01
Night statistics
Night start : 01:01
Night end : 08:29
Night length: 07:27
Night conditions
Seeing : 0.5-1.2"
Wind : 0-9 m/s (SE-E-NE-N)
Humidity : 2-13%
Temperature: 13.5-18.5 deg C
Comments :
Weather report
22:40 CL : few thin low west and south west
05:10 TN : thin only low east
06:40 TN : thin higher on the east, thick low east
08:10 TK : thick layer low west, the rest is clear
08:40 TK : thick layer is getting bigger and higher

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130544 (UT start 03:11)
130545 (UT start 04:29)

2003-01-02
Night statistics
Night start : 01:01
Night end : 08:30
Night length: 07:28
Night conditions
Seeing : 0.55-1.2"
Wind : 1-9 m/s (NW-N-NE-N)
Humidity : 2-8%
Temperature: 14-17 deg C
Comments :
Weather report
22:40 PH : According to FORSes Zp
08:00 CL : some thin low

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130536 (UT start 03:14)
130537 (UT start 04:28)

2003-01-03
Night statistics
Night start : 01:01
Night end : 08:31
Night length: 07:29
Night conditions
Seeing : 0.5-1.7"
Wind : 0-13 m/s (NE-E-NE)
Humidity : 5-36%
Temperature: 11-16 deg C
Comments :
Weather report
22:40 CL : some thin low south and west
05:30 CL WI :
05:50 CL :
08:00 CL WI :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Test exposures: FORS2_IMG_CAL003.36* to FORS2_IMG_CAL003.62*. Please disregard.
Executed OBs
130538 (UT start 00:47)

2003-01-04
Night statistics
Night start : 01:01
Night end : 08:32
Night length: 07:30
Night conditions
Seeing : 0.5 - 3.0
Wind : 5 - 13 m/s N - NE
Humidity : 3 - 20 %
Temperature: 14 - 12 C
Comments :
Weather report
00:00 PH :
08:00 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130540 (UT start 00:45)
130541 (UT start 02:22)
130542 (UT start 03:31)

2003-01-05
Night statistics
Night start : 01:01
Night end : 08:33
Night length: 07:31
Night conditions
Seeing : 0.5 - 1.2
Wind : 5 - 11 m/s N
Humidity : 10%
Temperature: 13 - 15 C
Comments :
Weather report
00:00 PH :
08:30 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Please note that time statistics in last night report have been changed.
Executed OBs
130546 (UT start 00:45)
130547 (UT start 02:04)
130548 (UT start 03:20)
130549 (UT start 04:33)

2003-01-06
Night statistics
Night start : 01:01
Night end : 08:34
Night length: 07:32
Night conditions
Seeing : 0.45 - 1.7
Wind : 0 - 7 m/s N-E-N
Humidity : 6 - 10 %
Temperature: 15 - 16 C
Comments :
Weather report
00:00 CL :
08:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130550 (UT start 01:55)
130551 (UT start 03:09)
130552 (UT start 04:21)

2003-01-29
Night statistics
Night start : 00:54
Night end : 08:55
Night length: 08:00
Night conditions
Seeing : 0.7-1.8"
Wind : 0-10 m/s (SE-E-NE-E)
Humidity : 15-34%
Temperature: 13.5-20 deg C
Comments :
Weather report
22:30 CL : thin low south

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130553 (UT start 02:06)

2003-01-30
Night statistics
Night start : 00:54
Night end : 08:56
Night length: 08:02
Night conditions
Seeing : 0.6-1.7"
Wind : 0-9 m/s (S-E-NE)
Humidity : 18-37%
Temperature: 13-18 deg C
Comments :
Weather report
22:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130554 (UT start 01:06)
130555 (UT start 02:21)

2003-02-03
Night statistics
Night start : 00:51
Night end : 08:59
Night length: 08:07
Night conditions
Seeing : 0.65-2.1"
Wind : 0-12 m/s
Humidity : 12-42%
Temperature: 14-18.5 deg. C
Comments : Wind directions S-SE-E-NE-NW-W-SW
Weather report
22:30 CL : few thin low east

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130539 (UT start 00:49)

2003-02-06
Night statistics
Night start : 00:49
Night end : 09:01
Night length: 08:11
Night conditions
Seeing : 0.5-1.65"
Wind : 0-7m/s S-N)
Humidity : 30-60%
Temperature: 13.5-16 deg.C
Comments :
Weather report
00:00 CL HU : humidity ~ 60%

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
NACO Tests
Dark frames: NACO_0001 to 0014
Mask frames: Mask_0001 to 0004
Pupil Frames: Lamp_pupil_0001 to 0002
Pupil image of the calibration unit and the illumination level
of the flats look OK.
Executed OBs
130539 (UT start 01:02)

2003-02-23
Night statistics
Night start : 00:36
Night end : 09:13
Night length: 08:36
Night conditions
Seeing : 0.4-1.6 arcsec
Wind : 0-5 m/s (NE)
Humidity : 8-12%
Temperature: 14-16 deg.
Comments :
Weather report
00:00 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Pupil Alignment tests
VIS 14x14 Mode 1-4 VIS
i) Loaded cnmrefDefault_280302.fits
ii) Acquired
iii) Took Pupil_VIS_14x14_default.fits
iv) Loaded cnmrefDefault_pup_5V_280302.fits
v) Took Pupil_VIS_14x14_5V.fits
IR 7x7 Mode 9-2 N20C80
i) Reset the IM lamp
ii) Loaded cnmrefDefault_280302.fits
iii) Acquired
iv) Took Pupil_IR_7x7V1_default.fits
v) Loaded cnmrefDefault_pup_9V_7x7_280302.fits
vi) Took Pupil_IR_7x7V1_9V.fits
Executed OBs
130556 (UT start 00:27)

2003-02-26
Night statistics
Night start : 00:34
Night end : 09:15
Night length: 08:41
Night conditions
Seeing : NA
Wind : 0-15 m/s (S-E-S-SE)
Humidity : 3-19%
Temperature: 12-16 deg. C
Comments : Seeing not available due to some work on the ASM
Weather report
23:15 CL WI :
00:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130557 (UT start 00:24)

2003-07-29
Night statistics
Night start : 23:35
Night end : 09:59
Night length: 10:23
Night conditions
Seeing : 0.4-1.5"
Wind : 9-17m/s NE
Humidity : 10-13%
Temperature: 12-14 C
Comments :
Weather report
22:30 CL :
00:00 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130557 (UT start 09:05)

2003-07-31
Night statistics
Night start : 23:36
Night end : 09:58
Night length: 10:22
Night conditions
Seeing : 0.6-1.6
Wind : 11-18m/s NW-N
Humidity : 25-40%
Temperature: 8-11 C
Comments :
Weather report
22:30 WI : Tel. Closed
23:40 TN : few TN passing.
02:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130557 (UT start 06:42)
130558 (UT start 08:03)
132038 (UT start 09:19)

2003-08-01
Night statistics
Night start : 23:36
Night end : 09:58
Night length: 10:21
Night conditions
Seeing : 0.7-1.6"
Wind : 5-17 m/s N-NW
Humidity : 12-40%
Temperature: ~9 C
Comments :
Weather report
22:30 CL :
00:00 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
132039 (UT start 07:50)
132040 (UT start 09:09)

2003-08-02
Night statistics
Night start : 23:36
Night end : 09:57
Night length: 10:20
Night conditions
Seeing : 0.7-2.5"
Wind : 9-17.5m/s N
Humidity : 35-47%
Temperature: 6-8 C
Comments :
Weather report
23:00 TK : few TK passing.
23:30 CY : Tel. Closed
05:00 CL : Tel. open

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Last night report has been updated as follow:
the 15 min execution downtime have been added to the preparation downtime.
Executed OBs
132041 (UT start 08:08)
132041 (UT start 09:27)

2003-08-28
Night statistics
Night start : 23:45
Night end : 09:38
Night length: 09:52
Night conditions
Seeing : 0.4-1.2"
Wind : 2-9m/s NW-N
Humidity : ~4%
Temperature: ~11C
Comments :
Weather report
23:00 PH : FORS2 Zp
00:00 CL : few TK coming from W.
00:50 TK : TK cirrus passing
01:45 CL :
08:50 TK : Tk coming from SE

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
.
Today & tonight, we experiment network connection problems (actually: no connection at all) with Garching.
Thus, the incremental update for finding charts v1.7 could not be done, and now, at the time to execute the OB 148854, we don't have the finding chart and no connection to Garching to retreive it. The OB has been aborted.
The FORS2 queues are empty until 19 ST (with FORS2), so we switch to NACO for training (which queues are also empty). The telescope should be considered idle (no OBs to execute).
NACO: RTC tstore error, 10 min lost.
Executed OBs
145079 (UT start 07:27)
145080 (UT start 08:46)

2003-08-29
Night statistics
Night start : 23:45
Night end : 09:37
Night length: 09:51
Night conditions
Seeing : 0.3-1.1"
Wind : 2-7m/s NW-N
Humidity : 4%
Temperature: ~11C
Comments :
Weather report
22:45 TN :
23:30 CL :
08:45 TK : TK around and passing

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
145080 (UT start 05:28)
145081 (UT start 06:49)
145082 (UT start 08:05)

2003-08-30
Night statistics
Night start : 23:46
Night end : 09:36
Night length: 09:50
Night conditions
Seeing : 0.4-1.0"
Wind : 0-5m/s NE-N-NW-W
Humidity : ~10%
Temperature: ~14C
Comments :
Weather report
22:45 TK :
00:00 TN :
02:00 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Weather downtime due to thick/thin cirrus and no OBs to execute under these conditions.
Actually, we spend this time to practice with NACO for training purpose.
Executed OBs
145082 (UT start 05:43)

2003-08-31
Night statistics
Night start : 23:46
Night end : 09:35
Night length: 09:49
Night conditions
Seeing : 0.55-1.4"
Wind : 0-5.5m/s S-E-N
Humidity : ~10%
Temperature: 12-13C
Comments :
Weather report
22:45 TK :
01:45 TN :
02:45 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
10 minutes lost due to MIDAS crash.
Solved by restart of Midas and of the OB 148830.
Weather downtime due to thick/thin cirrus.
No OBs to execute due to the weather.
We spend this time for training on NACO.
Executed OBs
145083 (UT start 06:45)

2003-09-02
Night statistics
Night start : 23:46
Night end : 09:34
Night length: 09:47
Night conditions
Seeing : 0.4-1.4"
Wind : 2.4-10.4 m/s N-NW
Humidity : 8-11%
Temperature: 13.7-10.7 C
Comments :
Weather report
23:10 CL :
00:10 PH : According to ISAAC Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
145084 (UT start 08:26)

2003-09-21
Night statistics
Night start : 23:53
Night end : 09:15
Night length: 09:22
Night conditions
Seeing : 0.47-1.5"
Wind : 5-15m/s (NE-N)
Humidity : 8-16%
Temperature: 11-15deg.C
Comments :
Weather report
23:00 CL :
00:00 PH : According to ZP results on FORS1
05:30 CL : Some clouds to N-E but below 20deg.
06:00 TN :
06:30 TK : thick cirrus passing
07:15 CY : Closing telescopes

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Details of the night statistics:
UT4 technical = new ONECAL calibration for Nasmyth B (PPR 10815)
FORS2:
technical downtime = PPR 10814 (time that would have been used for FORS2
observations at beginning of night).
Misc = focus change
NACO technical downtime =
10min to go and adjust the regulation valve of Vis WFS (over-cooling) - related to PPR 10810)
30min = PPR 10312
We also had a scanning problem (PPR 10513) but no time has been accounted for that.
Executed OBs
145085 (UT start 05:20)

2003-09-22
Night statistics
Night start : 23:53
Night end : 09:14
Night length: 09:20
Night conditions
Seeing : 0.6-2.0"
Wind : 5-14m/s (N-NE)
Humidity : 12-28%
Temperature: 10-13 deg.C
Comments :
Weather report
23:00 CL : Some clouds to SE below 20deg.
07:40 CL : Some clouds in West but below 20deg.
08:00 TK : thick cirrus to E-S-W at ~40 deg.

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
5min technical downtime related to PPR10826.
Lost entire morning twilight because of clouds.
Executed OBs
145085 (UT start 04:56)

2003-09-26
Night statistics
Night start : 23:55
Night end : 09:09
Night length: 09:14
Night conditions
Seeing : 0.56-1.9"
Wind : 1-9m/s W-SW-SE
Humidity : 4-9%
Temperature: 11-14 deg. C
Comments :
Weather report
22:35 CL : thick low south and south west
02:40 TK : clouds coming from the south west, now at ~40 deg, the rest is clear
03:00 TK : clouds passing from south west to north east
04:00 TK : thick to north and east, clouds going away. The rest is thin.
04:20 TN : thick low north east
05:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
145085 (UT start 05:38)
145086 (UT start 06:57)

2003-09-27
Night statistics
Night start : 23:55
Night end : 09:08
Night length: 09:12
Night conditions
Seeing : 0.6-2.2"
Wind : 7-12 m/s S-SSE-S
Humidity : ~10 %
Temperature: 12-13 C
Comments :
Weather report
23:30 CL :
00:00 PH : FORS2 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
149186 (UT start 05:03)
149187 (UT start 06:27)
149188 (UT start 07:41)

2003-09-28
Night statistics
Night start : 23:56
Night end : 09:07
Night length: 09:11
Night conditions
Seeing : 0.5-1.35"
Wind : 0-5m/s N
Humidity : 9%
Temperature: 14-15%
Comments :
Weather report
23:00 CL :
00:30 PH : FORS2 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
149189 (UT start 05:36)
149190 (UT start 08:16)
149191 (UT start 06:53)

2003-09-29
Night statistics
Night start : 23:56
Night end : 09:05
Night length: 09:09
Night conditions
Seeing : 0.4-1.1"
Wind : 0-7m/s N-NE
Humidity : 7-9%
Temperature: 14-15 C
Comments :
Weather report
23:00 CL :
23:30 PH :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
149192 (UT start 07:49)
149193 (UT start 06:30)
149196 (UT start 05:21)
149197 (UT start 04:01)

2003-09-30
Night statistics
Night start : 23:56
Night end : 09:04
Night length: 09:07
Night conditions
Seeing : 0.37 - 1.8"
Wind : 0 - 5m/s (NE-SE-W-N)
Humidity : 5-11%
Temperature: 13-15 deg.C
Comments :
Weather report
23:00 TN : Thin cirrus to E-S
03:40 CL : Some clouds to SE-S-SW but below 20 deg.

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Detail of night statistics:
23:57-00:44 FORS2 service
00:44-07:52 NACO service
07:57-09:06 FORS2 service
NACO downtime:
MISC = focus change
technical = 10min (PPRS 10906) + 30min (PPRS 10513)
Executed OBs
149195 (UT start 08:06)

2003-10-02
Night statistics
Night start : 23:58
Night end : 09:02
Night length: 09:03
Night conditions
Seeing : 0.4-2.0"
Wind : 0-7m/s (E-NW-N)
Humidity : 5-13%
Temperature: 11-15 deg.C
Comments :
Weather report
23:00 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Since we could not observe with NACO (PPR 10923), the visitor run has been changed into a FORS2 service night.
Executed OBs
149748 (UT start 07:40)
149749 (UT start 06:13)

2003-10-03
Night statistics
Night start : 23:58
Night end : 09:01
Night length: 09:02
Night conditions
Seeing : 0.4-2.0"
Wind : 0-6m/s (SE-NW-NE)
Humidity : 5-9%
Temperature: 11-15 deg.C
Comments :
Weather report
23:00 CL : Some clouds to West below 20 deg.
05:30 TN : Clouds coming from West
06:50 CL :
08:40 TN : thin cirrus coming again

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Detail of downtime:
11min execution downtime: started wrong OB by mistake.
20 min tech. = PPR#10932
Please note that even though tonight is meant to be a NACO visitor night, we do FOSR2 service all night.
There is 9hrs 2 min of 'visitor downtime', due to the on-going cool down of CONICA after the power cut.
Executed OBs
149194 (UT start 08:22)
149747 (UT start 06:58)

2003-10-18
Night statistics
Night start : 00:08
Night end : 08:45
Night length: 08:37
Night conditions
Seeing : 0.4 - 1.6 arcsec.
Wind : 1 - 10 m/s (SW-SE)
Humidity : > 4 %
Temperature: 13 - 14 deg.
Comments :
Weather report
23:00 CL :
00:30 PH : According to ISAAC Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
6 min "lost" to take a technical image with HR collimator for TSZ:
Thomas asked to take this image using standard star field for FIMS fine tuning.
Executed OBs
149194 (UT start 04:24)

2003-11-21
Night statistics
Night start : 00:35
Night end : 08:20
Night length: 07:45
Night conditions
Seeing : 0.5-2.0"
Wind : 0-10m/s S-E-N
Humidity : 15-17%
Temperature: ~16 C
Comments :
Weather report
23:30 CL :
01:00 PH : FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
The first part of the night was used to carry out a technical test with NACO, as
requested by C. Lidman. The aim of the test was to check if the counter-chopping is working properly.
Executed OBs
130557 (UT start 01:11)
149750 (UT start 05:00)
149751 (UT start 06:16)

2003-11-23
Night statistics
Night start :
Night end :
Night length:
Night conditions
Seeing : 0.6-1.7"
Wind : 1-9m/s S-SW-W
Humidity : 13-19%
Temperature: 15-16C
Comments :
Weather report
23:30 CL :
01:00 PH : FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
149752 (UT start 05:54)

2003-11-24
Night statistics
Night start : 00:37
Night end : 08:19
Night length: 07:41
Night conditions
Seeing : 0.45-1.62
Wind : 0-5.5 m/s S-E-N-NW
Humidity : 5-20%
Temperature: 12-16 C
Comments :
Weather report
23:30 CL :
01:00 PH : FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
At ~4:45h there was an earthquake. We stopped observing and
the TIO went to the telescope to check that everything was fine
(see PPRS 11419).
We lost a total of 41 minutes: ~15 minutes of the exposure that was running at that moment and ~26 minutes for telescope and instruments inspection.
Executed OBs
149753 (UT start 04:31)

2003-11-25
Night statistics
Night start : 00:38
Night end : 08:18
Night length: 07:40
Night conditions
Seeing : 0.4-2.5"
Wind : 2-6m/s (N-NW-NE)
Humidity : 8-18%
Temperature: 10-14.5deg.C
Comments :
Weather report
23:30 CL :
01:00 CL : According to ZP results on FORS2

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
NACO tests done during twilight and thus not reported in the statistics.
Executed OBs
132040 (UT start 06:34)

2003-12-15
Night statistics
Night start : 00:55
Night end : 08:19
Night length: 07:23
Night conditions
Seeing : 0.47-1.70"
Wind : 5-10m/s (E-NNE)
Humidity : 6-22%
Temperature: 11-13.6 deg.C
Comments :
Weather report
23:30 CL :
01:00 PH : According to ZP results on FORS1

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
NACO technical =
Tests of chopping/counter-chopping
Acquisition of spectra for new L band spectroscopic modes (for ETC)
Executed OBs
149746 (UT start 01:56)
151264 (UT start 03:22)

2003-12-16
Night statistics
Night start : 00:56
Night end : 08:19
Night length: 07:23
Night conditions
Seeing : 5-2arcsec
Wind : NE-E-N-NE
Humidity : 7-16%
Temperature: 12-14 C
Comments :
Weather report
23:30 PH : According to FORS1 Zp
09:00 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
130558 (UT start 02:26)
132040 (UT start 03:46)

2003-12-17
Night statistics
Night start : 00:56
Night end : 08:20
Night length: 07:23
Night conditions
Seeing : 0.39-2.0"
Wind : 0-9m/s S-SE-E-N
Humidity : 5-12%
Temperature: 13-17.5 deg. C
Comments :
Weather report
23:30 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
NACO RTC slopes and voltages were measured during morning twilight.
Executed OBs
151261 (UT start 03:48)
151262 (UT start 02:33)
151263 (UT start 01:10)

2003-12-18
Night statistics
Night start : 00:56
Night end : 08:20
Night length: 07:24
Night conditions
Seeing : 0.32-2.0"
Wind : 0-11m/s E-N-NE
Humidity : 6-11%
Temperature: 11-17 deg.C
Comments :
Weather report
23:30 TN : Few thin higher than 20 degrees. Thick very low north
01:30 CL :
04:00 CL : some thick low norht
05:00 TK : thick clouds passing from north to south
05:40 TK :
07:50 TK TN : Clouds now passing from north east to south west

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
Daily_Check_AO_Correction failed in third template (first IR WFS template). This template
was skipped and the rest was executed without problems.
Executed OBs
151267 (UT start 04:48)
151268 (UT start 03:32)

2003-12-19
Night statistics
Night start : 00:57
Night end : 08:21
Night length: 07:24
Night conditions
Seeing : 0.4-1.7"
Wind : 0-5 m/s E-N-W-N
Humidity : 3-11%
Temperature: 15-17 C
Comments :
Weather report
00:00 TN : few TN passing, TK coming from W.
01:30 TN : few TK very low in the S-W
03:45 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
151266 (UT start 04:09)
151267 (UT start 02:54)

2003-12-20
Night statistics
Night start : 00:57
Night end : 08:22
Night length: 07:24
Night conditions
Seeing : 0.5-1.4"
Wind : 1-7m/s W-N-E
Humidity : 4-11%
Temperature: 13-16C
Comments :
Weather report
00:00 CL :
01:15 PH : FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
151265 (UT start 02:31)
152194 (UT start 05:25)
152195 (UT start 04:11)

2003-12-21
Night statistics
Night start : 00:58
Night end : 08:22
Night length: 07:24
Night conditions
Seeing : 0.5-1.2"
Wind : 0-9 m/s E-NE-N
Humidity : 4-12%
Temperature: 14-15 C
Comments :
Weather report
00:15 TN : few TN passing
02:45 CL :

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152192 (UT start 04:17)
152193 (UT start 03:00)
152199 (UT start 05:29)

2003-12-22
Night statistics
Night start : 00:58
Night end : 08:23
Night length: 07:25
Night conditions
Seeing : 0.4-1.3"
Wind : 2-8 m/s S-E-N
Humidity : 3-12%
Temperature: 15-17C
Comments :
Weather report
00:00 CL :
01:30 PH : Fors1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152196 (UT start 03:05)
152197 (UT start 01:51)
152198 (UT start 00:36)
152203 (UT start 04:42)

2003-12-23
Night statistics
Night start : 00:58
Night end : 08:24
Night length: 07:25
Night conditions
Seeing : 0.4-1.3 arcsec
Wind : ~0-8 m/s
Humidity : 4-10%
Temperature: 14-16 deg
Comments :
Weather report
00:00 CL :
01:30 PH : According to FORS1 & FORS2 Zp
07:00 CL : Few clouds S-SE lower than 30 deg .in alt.

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152200 (UT start 00:35)
152201 (UT start 01:54)
152202 (UT start 03:14)
152204 (UT start 04:33)

2003-12-24
Night statistics
Night start : 00:59
Night end : 08:24
Night length: 07:25
Night conditions
Seeing : 0.4-1.6"
Wind : 0-5m/s (S-W-N)
Humidity : 11-18%
Temperature: 14-16deg.C
Comments :
Weather report
23:30 TN : Scattered thin cirrus
01:30 CL : Some clouds to E-S but below 20 deg.

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
At the beguinning of the night there were thin cirrus. There were not FORS2 programs requiring such conditions so I started observing with NACO.
We changed to FORS2 at 1:54 UT. It took us 7 minutes to change from NACO to FORS2.
From 00:31 to 00:59 I tried to execute the OB 150649 with NACO.
It was not possible to measure the sky background in the IR WFS, so I aborted the OB and started a new one. The OB 150649 was observed during twilight, so there are not time losses.
Executed OBs
152205 (UT start 02:01)
152206 (UT start 03:21)
152207 (UT start 04:43)

2004-01-17
Night statistics
Night start : 01:00
Night end : 08:43
Night length: 07:42
Night conditions
Seeing : 0.65-1.3"
Wind : 0-9m/s S-E-N-NE
Humidity : 9-20%
Temperature: 9-13 deg C.
Comments :
Weather report
23:30 PH : According to FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152454 (UT start 04:00)
152455 (UT start 02:43)

2004-01-18
Night statistics
Night start : 01:00
Night end : 08:44
Night length: 07:44
Night conditions
Seeing : 0.48-1.0"
Wind : 1-9m/s NW-N-E-N
Humidity : 10-28%
Temperature: 11.5-13 deg. C
Comments :
Weather report
23:40 PH : According to FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152452 (UT start 02:52)
152453 (UT start 01:36)

2004-01-19
Night statistics
Night start : 00:59
Night end : 08:45
Night length: 07:45
Night conditions
Seeing : 0.55-1.6"
Wind : 1-8m/s S-E-N-NE
Humidity : 13-26%
Temperature: 12-14 deg. C
Comments :
Weather report
23:35 PH : According to FORS1 Zp

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152451 (UT start 03:34)

2004-01-20
Night statistics
Night start : 00:59
Night end : 08:46
Night length: 07:47
Night conditions
Seeing : 0.55-2.0"
Wind : 0-8m/s (SE-NW-NNE)
Humidity : 13-28%
Temperature: 11-14deg.C
Comments :
Weather report
00:00 CL :
01:00 CL : According to ZP on FORS1/2

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152450 (UT start 00:37)

2004-01-21
Night statistics
Night start : 00:58
Night end : 08:47
Night length: 07:48
Night conditions
Seeing : 0.38-1.35"
Wind : 0-8m/s (SE-N)
Humidity : 31-51%
Temperature: 10-12deg.C
Comments :
Weather report
00:00 CL :
01:00 CL : Acoording to ZP on FORS2
08:00 CL HU : RH=50%

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152448 (UT start 01:50)
152449 (UT start 00:34)

2004-01-22
Night statistics
Night start : 00:58
Night end : 08:48
Night length: 07:50
Night conditions
Seeing : 0.6-2.7"
Wind : 0-10m/s (SE-N-ENE)
Humidity : 10-40%
Temperature: 8-12deg.C
Comments :
Weather report
00:00 CL :
01:00 CL : According to ZP on FORS1
05:00 CL EQ : A short low intensity earthquake occur.

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152446 (UT start 02:05)
152447 (UT start 00:41)

2004-01-23
Night statistics
Night start : 00:57
Night end : 08:49
Night length: 07:51
Night conditions
Seeing : 0.5-1.87"
Wind : 1-9m/s (SE-NE-N-NNE)
Humidity : 13-45%
Temperature: 10.5-12 deg.C
Comments :
Weather report
00:00 CL :
02:00 PH : Accordimg to ZP on FORS1

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
152444 (UT start 00:54)
152445 (UT start 02:06)

2004-02-20
Night statistics
Night start : 00:39
Night end : 09:11
Night length: 08:31
Night conditions
Seeing : 0.44-2.6"
Wind : 0-9 m/s (W-E-N-NE)
Humidity : 30-50%
Temperature: 10-12deg.C
Comments :
Weather report
00:00 CL :
00:30 PH : According to ZP results in ISAAC

(Legend:
PH-Photometric, CL-CLEAR, TN-Thin cirrus, TK-Thick cirrus,
CY-Cloudy, WI-Windy, HU-Humid, RN-Rain, SN-Snow,
EQ-Earthquake, OT-other; ZP = zeropoints)

General comments
None
Executed OBs
153706 (UT start 00:23)