UT 201201012 LBBG Technical Observations

Observer: JHeidt (@LBTO), DMiller, JCarlos (Tucson)
Telescope Operator: GBechetti (LBTO)
Telescope Support: JUrban (LBTO)
Instrument Support: DOfficer (LBTO)

Summary

Lost about 2/3 of night due to clouds
Took some performance verification data or moderate to poor quality (collimation and dice5)
Checked repeatability of guide probe positioning
Did some tests for Pisces, changing the hotspot
Took some performance verification data or moderate to poor quality (collimation and dice5). Below is a summary of the (most likely) useful data sets taken.

Elevation	Preset	Guiding/Collimation	Dice5 (1x1)	Dice5 (10x10)
45	col_45a	col_45a	dice5_1_45a	dice5_10_45a,
60	col_60a	col_60a
70	dice5_1_70a		dice5_1_70a

Details

00:00 We are delayed a bit. Problems with SX primary, whose air pressure support didn't work. Had to replace a valve.

00:30 Weather at sunset: Thick clouds all around the horizon, quite a few cirrus above us, but not too thick, somewhat better than during the day. Temp (ambient): -0.9deg, Temp (mirror): -.4deg, Wind 10m/s, Hum 12%

00:45 Opening (delay minor)

01:00 Geno preset in acquire mode to BS9188, star there, colimate, seeing on guider about 1.2", Dimm says similar values, sky mostly clear above us now.

Performance verification data

01:27 collimate_collect, Stone_D, num=120, exp=.2, PA=0, gs=17,/GCS (dir col_45a), elevation at start 36degs, rising, seeing mostly 1.2-1.3"

Single Image	Cube Image
irtc.20120112.013427.fits	irtc.20120112.00001_cube.fits
irtc.20120112.013520.fits	irtc.20120112.00002_cube.fits
irtc.20120112.013554.fits	irtc.20120112.00003_cube.fits
irtc.20120112.013628.fits	irtc.20120112.00004_cube.fits
irtc.20120112.013701.fits	irtc.20120112.00005_cube.fits
irtc.20120112.013735.fits	irtc.20120112.00006_cube.fits
irtc.20120112.013809.fits	irtc.20120112.00007_cube.fits
irtc.20120112.013843.fits	irtc.20120112.00008_cube.fits
irtc.20120112.013916.fits	irtc.20120112.00009_cube.fits
irtc.20120112.013950.fits	irtc.20120112.00010_cube.fits
irtc.20120112.014024.fits	irtc.20120112.00011_cube.fits

01:42 dice5_collect, dist=10, iter=5, exp=0.2, num=120, (dir dice5_10_45a), seeing mostly 1.2-1.4", needs sometimes a few cycles to collimate (required mostly only one during the previous night).

Ra/X	Dec/Y	Single Image	Cube Image
Background Image
30	0	irtc.20120112.014220.fits	irtc.20120112.00012_cube.fits
Dice5 10 arcsec RADEC
0.00000	0.00000	irtc.20120112.014314.fits	irtc.20120112.00013_cube.fits
-10.0000	10.0000	irtc.20120112.014417.fits	irtc.20120112.00014_cube.fits
10.0000	-10.0000	irtc.20120112.014525.fits	irtc.20120112.00015_cube.fits
-10.0000	-10.0000	irtc.20120112.014635.fits	irtc.20120112.00016_cube.fits
10.0000	10.0000	irtc.20120112.014900.fits	irtc.20120112.00017_cube.fits
0.00000	0.00000	irtc.20120112.015012.fits	irtc.20120112.00018_cube.fits
-10.0000	10.0000	irtc.20120112.015122.fits	irtc.20120112.00019_cube.fits
10.0000	-10.0000	irtc.20120112.015238.fits	irtc.20120112.00020_cube.fits
-10.0000	-10.0000	irtc.20120112.015346.fits	irtc.20120112.00021_cube.fits
10.0000	10.0000	irtc.20120112.015456.fits	irtc.20120112.00022_cube.fits
0.00000	0.00000	irtc.20120112.015612.fits	irtc.20120112.00023_cube.fits
-10.0000	10.0000	irtc.20120112.015720.fits	irtc.20120112.00024_cube.fits
10.0000	-10.0000	irtc.20120112.015830.fits	irtc.20120112.00025_cube.fits
-10.0000	-10.0000	irtc.20120112.015943.fits	irtc.20120112.00026_cube.fits
10.0000	10.0000	irtc.20120112.020054.fits	irtc.20120112.00027_cube.fits
0.00000	0.00000	irtc.20120112.020206.fits	irtc.20120112.00028_cube.fits
-10.0000	10.0000	irtc.20120112.020316.fits	irtc.20120112.00029_cube.fits
10.0000	-10.0000	irtc.20120112.020425.fits	irtc.20120112.00030_cube.fits
-10.0000	-10.0000	irtc.20120112.020538.fits	irtc.20120112.00031_cube.fits
10.0000	10.0000	irtc.20120112.020653.fits	irtc.20120112.00032_cube.fits
0.00000	0.00000	irtc.20120112.020805.fits	irtc.20120112.00033_cube.fits
-10.0000	10.0000	irtc.20120112.021033.fits	irtc.20120112.00034_cube.fits
10.0000	-10.0000	irtc.20120112.021140.fits	irtc.20120112.00035_cube.fits
-10.0000	-10.0000	irtc.20120112.021251.fits	irtc.20120112.00036_cube.fits
10.0000	10.0000	irtc.20120112.021408.fits	irtc.20120112.00037_cube.fits

02:16 dice5_collect, dist=1, iter=5, exp=0.2, num=120, (dir dice5_1_45a), seeing improves, mostly below 1" now, mirror is now better in thermal equilibrium, elevation 49 at end

Ra/X	Dec/Y	Single Image	Cube Image
Background Image
30	0	irtc.20120112.021611.fits	irtc.20120112.00038_cube.fits
Dice5 1 arcsec RADEC
0.00000	0.00000	irtc.20120112.021704.fits	irtc.20120112.00039_cube.fits
-1.00000	1.00000	irtc.20120112.021806.fits	irtc.20120112.00040_cube.fits
1.00000	-1.00000	irtc.20120112.021914.fits	irtc.20120112.00041_cube.fits
-1.00000	-1.00000	irtc.20120112.022026.fits	irtc.20120112.00042_cube.fits
1.00000	1.00000	irtc.20120112.022215.fits	irtc.20120112.00043_cube.fits
0.00000	0.00000	irtc.20120112.022325.fits	irtc.20120112.00044_cube.fits
-1.00000	1.00000	irtc.20120112.022435.fits	irtc.20120112.00045_cube.fits
1.00000	-1.00000	irtc.20120112.022551.fits	irtc.20120112.00046_cube.fits
-1.00000	-1.00000	irtc.20120112.022736.fits	irtc.20120112.00047_cube.fits
1.00000	1.00000	irtc.20120112.022844.fits	irtc.20120112.00048_cube.fits
0.00000	0.00000	irtc.20120112.022956.fits	irtc.20120112.00049_cube.fits
-1.00000	1.00000	irtc.20120112.023105.fits	irtc.20120112.00050_cube.fits
1.00000	-1.00000	irtc.20120112.023217.fits	irtc.20120112.00051_cube.fits
-1.00000	-1.00000	irtc.20120112.023327.fits	irtc.20120112.00052_cube.fits
1.00000	1.00000	irtc.20120112.023437.fits	irtc.20120112.00053_cube.fits
0.00000	0.00000	irtc.20120112.023550.fits	irtc.20120112.00054_cube.fits
-1.00000	1.00000	irtc.20120112.023700.fits	irtc.20120112.00055_cube.fits
1.00000	-1.00000	irtc.20120112.023810.fits	irtc.20120112.00056_cube.fits
-1.00000	-1.00000	irtc.20120112.023924.fits	irtc.20120112.00057_cube.fits
1.00000	1.00000	irtc.20120112.024034.fits	irtc.20120112.00058_cube.fits
0.00000	0.00000	irtc.20120112.024144.fits	irtc.20120112.00059_cube.fits
-1.00000	1.00000	irtc.20120112.024254.fits	irtc.20120112.00060_cube.fits
1.00000	-1.00000	irtc.20120112.024406.fits	irtc.20120112.00061_cube.fits
-1.00000	-1.00000	irtc.20120112.024517.fits	irtc.20120112.00062_cube.fits
1.00000	1.00000	irtc.20120112.024626.fits	irtc.20120112.00063_cube.fits

02:51 collimate_collect, BS9108, num=30, exp=1, PA=180, gs=9,/GCS, (dir col_60a), elevation at start 62degs, seeing improves even further, guider reports down to 0.6"

Single Image	Cube Image
irtc.20120112.025510.fits	irtc.20120112.00064_cube.fits
irtc.20120112.025607.fits	irtc.20120112.00065_cube.fits
irtc.20120112.025642.fits	irtc.20120112.00066_cube.fits
irtc.20120112.025717.fits	irtc.20120112.00067_cube.fits
irtc.20120112.025753.fits	irtc.20120112.00068_cube.fits
irtc.20120112.025828.fits	irtc.20120112.00069_cube.fits
irtc.20120112.025903.fits	irtc.20120112.00070_cube.fits
irtc.20120112.025938.fits	irtc.20120112.00071_cube.fits
irtc.20120112.030013.fits	irtc.20120112.00072_cube.fits
irtc.20120112.030049.fits	irtc.20120112.00073_cube.fits
irtc.20120112.030124.fits	irtc.20120112.00074_cube.fits

03:05 dice5_collect, dist=10, iter=5, exp=1, num=30 (dir dice5_10_60a), clouds movning in, finished script, but data are hardly useful

Ra/X	Dec/Y	Single Image	Cube Image
Background Image
30	0	irtc.20120112.030546.fits	irtc.20120112.00075_cube.fits
Dice5 10 arcsec RADEC
0.00000	0.00000	irtc.20120112.030641.fits	irtc.20120112.00076_cube.fits
-10.0000	10.0000	irtc.20120112.030744.fits	irtc.20120112.00077_cube.fits
10.0000	-10.0000	irtc.20120112.030854.fits	irtc.20120112.00078_cube.fits
-10.0000	-10.0000	irtc.20120112.031006.fits	irtc.20120112.00079_cube.fits
10.0000	10.0000	irtc.20120112.031117.fits	irtc.20120112.00080_cube.fits
0.00000	0.00000	irtc.20120112.031228.fits	irtc.20120112.00081_cube.fits
-10.0000	10.0000	irtc.20120112.031341.fits	irtc.20120112.00082_cube.fits
10.0000	-10.0000	irtc.20120112.031451.fits	irtc.20120112.00083_cube.fits
-10.0000	-10.0000	irtc.20120112.031643.fits	irtc.20120112.00084_cube.fits
10.0000	10.0000	irtc.20120112.031752.fits	irtc.20120112.00085_cube.fits
0.00000	0.00000	irtc.20120112.031904.fits	irtc.20120112.00086_cube.fits
-10.0000	10.0000	irtc.20120112.032014.fits	irtc.20120112.00087_cube.fits
10.0000	-10.0000	irtc.20120112.032124.fits	irtc.20120112.00088_cube.fits
-10.0000	-10.0000	irtc.20120112.032238.fits	irtc.20120112.00089_cube.fits
10.0000	10.0000	irtc.20120112.032345.fits	irtc.20120112.00090_cube.fits
0.00000	0.00000	irtc.20120112.032459.fits	irtc.20120112.00091_cube.fits
-10.0000	10.0000	irtc.20120112.032612.fits	irtc.20120112.00092_cube.fits
10.0000	-10.0000	irtc.20120112.032722.fits	irtc.20120112.00093_cube.fits
-10.0000	-10.0000	irtc.20120112.032840.fits	irtc.20120112.00094_cube.fits
10.0000	10.0000	irtc.20120112.032949.fits	irtc.20120112.00095_cube.fits
0.00000	0.00000	irtc.20120112.033101.fits	irtc.20120112.00096_cube.fits
-10.0000	10.0000	irtc.20120112.033211.fits	irtc.20120112.00097_cube.fits
10.0000	-10.0000	irtc.20120112.033320.fits	irtc.20120112.00098_cube.fits
-10.0000	-10.0000	irtc.20120112.033433.fits	irtc.20120112.00099_cube.fits
10.0000	10.0000	irtc.20120112.033543.fits	irtc.20120112.00100_cube.fits

Processed Data: Could see star ~100 counts above background in the first few images and then all but disappeared. Set not useful DLM 04:30

Check repeatability of guide probe positioning

03:40 Since sky is mostly overcast, we go to a bright star to check the repeatability of guide probe positioning by moving the guide probe directly and seeing how much the star moves on the IRTC and if it comes back to the same position when requested. Offsets in x and y are up to 1.5 this time in increments of 0.5

03:42 iif_preset, AO830, mode=active, PA=-90, gs=2

03:47 irc_getseqimage, exp=1.0,30, offset by 30" for a background image, cube 101

03:50 irc_getseqimage, exp=1.0,30, star at original position (x=-23.551, y=485.313), cube 102

03:54 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.313 to x=-24.051, y=485.313, (x -.5), cube 103

03:56 Juan moves AGw_stage without telling GCS from x=-24.051, y=485.313 to x=-24.551, y=485.313, (x -.5), cube 104

03:57 Juan moves AGw_stage without telling GCS from x=-24.551, y=485.313 to x=-25.051, y=485.313, (x -.5), cube 105

03:59 Juan moves AGw_stage without telling GCS from x=-25.051, y=485.313 to x=-24.551, y=485.313, (x +.5), cube 106

04:00 Juan moves AGw_stage without telling GCS from x=-24.551, y=485.313 to x=-24.051, y=485.313, (x +.5), cube 107

04:02 Juan moves AGw_stage without telling GCS from x=-24.051, y=485.313 to x=-23.551, y=485.313, (x +.5), cube 108

04:03 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.313 to x=-23.051, y=485.313, (x +.5), cube 109

04:05 Juan moves AGw_stage without telling GCS from x=-23.051, y=485.313 to x=-22.551, y=485.313, (x +.5), cube 110

04:07 Juan moves AGw_stage without telling GCS from x=-22.551, y=485.313 to x=-22.051, y=485.313, (x +.5), cube 111

04:08 Juan moves AGw_stage without telling GCS from x=-22.051, y=485.313 to x=-22.551, y=485.313, (x -.5), cube 112

04:10 Juan moves AGw_stage without telling GCS from x=-22.551, y=485.313 to x=-23.051, y=485.313, (x -.5), cube 113

04:11 Juan moves AGw_stage without telling GCS from x=-23.051, y=485.313 to x=-23.551, y=485.313, (x -.5), cube 114

04:11 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.313 to x=-23.551, y=485.813, (y +.5), cube 115

04:15 redo image at x=-23.551, y=485.813, cube 116

04:17 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.813 to x=-23.551, y=486.313, (y +.5), cube 117

04:18 Juan moves AGw_stage without telling GCS from x=-23.551, y=486.313 to x=-23.551, y=486.813, (y +.5), cube 118

04:19 Juan moves AGw_stage without telling GCS from x=-23.551, y=486.813 to x=-23.551, y=486.313, (y -.5), cube 119

04:21 Juan moves AGw_stage without telling GCS from x=-23.551, y=486.313 to x=-23.551, y=485.813, (y -.5), cube 120

04:22 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.813 to x=-23.551, y=485.313, (y -.5), cube 121

04:24 Juan moves AGw_stage without telling GCS from x=-23.551, y=485.313 to x=-23.551, y=484.813, (y -.5), cube 122

04:25 Juan moves AGw_stage without telling GCS from x=-23.551, y=484.813 to x=-23.551, y=484.313, (y -.5), cube 123

04:27 Juan moves AGw_stage without telling GCS from x=-23.551, y=484.313 to x=-23.551, y=483.813, (y -.5), cube 124

04:28 Juan moves AGw_stage without telling GCS from x=-23.551, y=483.813 to x=-23.551, y=484.313, (y +.5), cube 125

04:29 Juan moves AGw_stage without telling GCS from x=-23.551, y=484.313 to x=-23.551, y=484.813, (y +.5), cube 126

04:30 Juan moves AGw_stage without telling GCS from x=-23.551, y=484.813 to x=-23.551, y=485.313, (y +.5), cube 127

04:32 irc_getseqimage, exp=1.0,30, offset by 30" for a background image, cube 128

Tests for Pisces

04:41 Juan Carlos and Doug steal the IRTC GUI and the TWiki

	From: 	Michele De La Pena 
	Subject: 	Setting the pointing origin (position hotspot)
	Date: 	August 5, 2011 5:04:31 PM MST
	To: 	Douglas Miller 

Hi Doug,

I tested the setting of the pointing origin using BP11
on my workstation.  I ran the system in Monocular mode
on the right with IRTC.

1) Changed the RIGHTPOINTINGORIGIN values in
the PCSInstrument.conf file: When PCS was invoked, it
properly indicated on the PCSGUI the pointing origin base
values (not {0,0}).

2) Set a different pointing origin value in the pcsclient
program which invokes the PCS commands directly.  This
also changed the pointing origin base on the PCSGUI.

3) Used the PCSGUI to change the pointing origin base.
This also worked.

4) FINALLY...used the IRC calls (SetStars, SetHotspot) to
change the pointing origin.  This also worked.

So...I unfortunately have to say perhaps it was tired user
error.

Best,
Michele

04:48 At command line:

% irc SetHotspot 10.0 0.0.
IDL> iif_preset, AO830, MODE=ACTIVE, GS=2, PA=-90

The PCS GUi shows "Pointing Origin Base" of 16.?? arcsec.

04:49 Send same offset and "Pointing Origin Base" remains the same (ie this value is not cleared on a new preset)

04:53

% irc SetHotspot 3.0 0.0.
IDL> iif_preset, AO830, MODE=ACTIVE, GS=2, PA=-90

"Pointing Origin Base" = 5.14" in Ra
IRTC from (143, 130) to (149, 177)

04:57

% irc SetHotspot 0.0 3.0.
IDL> iif_preset, AO830, MODE=ACTIVE, GS=2, PA=-90

"Pointing Origin Base" = 5.14" in Dec
IRTC from (143, 130) to (??) could not see star on IRCT due to thicker clouds

05:04 preset to AO162: Hmag = 4.0. Could not see 8th mag guide star. Went on-axis and Geno set IE and CA. Moved guide probe out and still could not see 4th mag on IRTC. Geno check outside.

05:23 Thick clouds. Geno closed the chamber.

Performance verification data

10:05 Cirrus less thick now, we open and give it a try, pointing check OK

10:11 Active preset to BS9148, try to collimate, wow, seeing seems to be good, guider reports ~0.6-0.7"

10:22 dice5_collect, dist=10, iter=5, exp=1, num=30 (dir dice5_1_70a), start at elevation 68deg

Ra/X	Dec/Y	Single Image	Cube Image
Background Image
30	0	irtc.20120112.102152.fits	irtc.20120112.00129_cube.fits
Dice5 1 arcsec RADEC
0.00000	0.00000	irtc.20120112.102245.fits	irtc.20120112.00130_cube.fits
-1.00000	1.00000	irtc.20120112.102338.fits	irtc.20120112.00131_cube.fits
1.00000	-1.00000	irtc.20120112.102430.fits	irtc.20120112.00132_cube.fits
-1.00000	-1.00000	irtc.20120112.102522.fits	irtc.20120112.00133_cube.fits
1.00000	1.00000	irtc.20120112.102614.fits	irtc.20120112.00134_cube.fits
0.00000	0.00000	irtc.20120112.102707.fits	irtc.20120112.00135_cube.fits
-1.00000	1.00000	irtc.20120112.102759.fits	irtc.20120112.00136_cube.fits
1.00000	-1.00000	irtc.20120112.102851.fits	irtc.20120112.00137_cube.fits
-1.00000	-1.00000	irtc.20120112.102944.fits	irtc.20120112.00138_cube.fits
1.00000	1.00000	irtc.20120112.103037.fits	irtc.20120112.00139_cube.fits
0.00000	0.00000	irtc.20120112.103130.fits	irtc.20120112.00140_cube.fits
-1.00000	1.00000	irtc.20120112.103222.fits	irtc.20120112.00141_cube.fits
1.00000	-1.00000	irtc.20120112.103314.fits	irtc.20120112.00142_cube.fits
-1.00000	-1.00000	irtc.20120112.103407.fits	irtc.20120112.00143_cube.fits
1.00000	1.00000	irtc.20120112.103459.fits	irtc.20120112.00144_cube.fits
0.00000	0.00000	irtc.20120112.103551.fits	irtc.20120112.00145_cube.fits
-1.00000	1.00000	irtc.20120112.103645.fits	irtc.20120112.00146_cube.fits
1.00000	-1.00000	irtc.20120112.103737.fits	irtc.20120112.00147_cube.fits
-1.00000	-1.00000	irtc.20120112.103829.fits	irtc.20120112.00148_cube.fits
1.00000	1.00000	irtc.20120112.103921.fits	irtc.20120112.00149_cube.fits
0.00000	0.00000	irtc.20120112.104014.fits	irtc.20120112.00150_cube.fits
-1.00000	1.00000	irtc.20120112.104107.fits	irtc.20120112.00151_cube.fits
1.00000	-1.00000	irtc.20120112.104159.fits	irtc.20120112.00152_cube.fits
-1.00000	-1.00000	irtc.20120112.104251.fits	irtc.20120112.00153_cube.fits
1.00000	1.00000	irtc.20120112.104343.fits	irtc.20120112.00154_cube.fits

10:49 collimate_collect, bs9156, exp=1.0, num=30, PA=-90, gs=3,/GCS (dir col_45b), preset failed

10:51 check pointing, OK, corrected

10:53 do again, collimate_collect, bs9156, exp=1.0, num=30, PA=-90, gs=3,/GCS (dir col_45b), guide star there, but faint, apparently thicker clouds!

10:57 do again, collimate_collect, bs9156, exp=1.0, num=30, PA=-90, gs=3,/GCS (dir col_45b), found something, unlikely to be useful

Single Image	Cube Image
irtc.20120112.110256.fits	irtc.20120112.00155_cube.fits
irtc.20120112.110350.fits	irtc.20120112.00156_cube.fits
irtc.20120112.110425.fits	irtc.20120112.00157_cube.fits
irtc.20120112.110500.fits	irtc.20120112.00158_cube.fits
irtc.20120112.110535.fits	irtc.20120112.00159_cube.fits
irtc.20120112.110610.fits	irtc.20120112.00160_cube.fits
irtc.20120112.110645.fits	irtc.20120112.00161_cube.fits
irtc.20120112.110720.fits	irtc.20120112.00162_cube.fits
irtc.20120112.110756.fits	irtc.20120112.00163_cube.fits
irtc.20120112.110831.fits	irtc.20120112.00164_cube.fits
irtc.20120112.110906.fits	irtc.20120112.00165_cube.fits

Tests for Pisces, changing the hotspot

11:20 nothing else can be done, too many cirrus

11:21 iif_preset, AO448, mode=active, gs=1, PA=-90, takes quite a while to collimate

11:29 Geno stopped and restarted PCS, Doug did some interesting things...

11:30 iif_preset, AO448, mode=active, gs=1, PA=-90, star moved by 5" at IRTC

11:32 Geno stopped and restarted PCS, Doug did some interesting things...

11:33 iif_preset, AO448, mode=active, gs=1, PA=-90, star moved by 5" at IRTC

Performance verification data

11:40 Nothing else to do, take data, if they are useful, OK, if not, we"ll survive

11:42 collimate_collect, AO535, exp=1.0, num=30, PA=0, gs=1,/GCS (dir IRTC_XY), crashed

11:48 redo, collimate_collect, AO535, exp=1.0, num=30, PA=0, gs=1,/GCS (dir IRTC_XY),

Single Image	Cube Image
irtc.20120112.114905.fits	irtc.20120112.00166_cube.fits
irtc.20120112.114959.fits	irtc.20120112.00167_cube.fits
irtc.20120112.115035.fits	irtc.20120112.00168_cube.fits
irtc.20120112.115110.fits	irtc.20120112.00169_cube.fits
irtc.20120112.115145.fits	irtc.20120112.00170_cube.fits
irtc.20120112.115220.fits	irtc.20120112.00171_cube.fits
irtc.20120112.115255.fits	irtc.20120112.00172_cube.fits
irtc.20120112.115331.fits	irtc.20120112.00173_cube.fits
irtc.20120112.115406.fits	irtc.20120112.00174_cube.fits
irtc.20120112.115441.fits	irtc.20120112.00175_cube.fits
irtc.20120112.115516.fits	irtc.20120112.00176_cube.fits

12:10 Overcast, no chance for improvement

12:25 Closing - end of night

-- JochenHeidt - 12 Jan 2012