2010 January 02 UT - LBCB Observing Log (LBCR Warm)

LBCB Hub Moved by 1mm AWAY from Primary to winter Position (Doug Officer)

T=2.8 RH=19% at 01:25 UT

Observers are: M. Pedani, D.Thompson, OSA W. Wack

01:29 Slew to ACT_0293 We get Error messages on IIF when presetting. Calling T.Sargent

01:52 Ptadjust CA=-0.5 IE=-16.3 EL=+77 T=2.8

01:55 Putting manual corrections to mirror

Z7=-2000

02:14 Applied Z=+1mm Global Offset

02:15 DOFPIA we are collimated at 02:21

02:22 At the phone with M.De La Pena to patch PCS to eliminate the errors we have.

02:33 Slew to WT10_061

Still fighting with PCS errors

03:00 J.Hill changed the LBT.conf file and put the Right Side (PSFR) in Simulation Mode

03:04 Slew to WT10_191 EL=+53 InformationTechnology WORKED!

At EL +53 we can work but very Close to Z Limit ! Outside Temp is +2.8^C

Winter Position is not good for tonight.

03:20 We decide to Move the LBCB Hub by 1mm Toward the Primary to go again halfway between Winter and Summer Position

04:05 We are OPEN again Slew to WT10_091 EL+21

Looks Well collimated at +21 FWHM~1.3".

Check Pointing at +21 at Meridian

CA 6.7 IE 12.6

04:15 Slew to ACT_0297 EL+82.5

CA -4.2 IE -27.6

Stars are well rounded FWHM=0.75 without collimating So Collimation Table looks very Good tonight.

04:25 Slew to EL +54 to Collimate with DOFPIA

T=+2.6 ^C RH=30.%

Note: encoders were reset at the start of the night. We start a Pointing Session NOW: pointing log = ~telescope/20100102.ptlog

04:38 WT10_379 Pos#1 lbcb.20100102.044132
04:43 ACT_406 Pos#2 lbcb.20100102.044512
04:46 WT10_405 Pos#3 lbcb.20100102.044751
04:49 WT10_291 Pos#5 lbcb.20100102.045140
04:53 WT10_172 Pos#6 lbcb.20100102.045802
04:59 WT10_246 Pos#7 lbcb.20100102.050122
05:02 WT10_091 Pos#8 lbcb.20100102.050439
05:05 ACT0267 Pos#10 lbcb.20100102.050749
05:08 ACT0161 Pos#9 lbcb.20100102.051018
05:11 ACT0201 Pos#11 lbcb.20100102.051250
05:13 WT10_320 Pos#12 lbcb.20100102.051505
05:15 ACT0333 Pos#13 lbcb.20100102.051712
05:18 ACT0288 Pos#14 lbcb.20100102.051923
05:20 WT10_271 Pos#15 lbcb.20100102.052129
05:23 WT10_316 Pos#16 lbcb.20100102.052544
05:26 ACT0178 Pos#17 lbcb.20100102.052838
05:29 WT10_080 Pos#18 lbcb.20100102.053107
05:32 WT10_108 Pos#19 lbcb.20100102.053330
05:35 ACT0299 Pos#20 lbcb.20100102.053659
05:38 WT10_263 Pos#21 lbcb.20100102.054017
05:41 ACT0206 Pos#22 lbcb.20100102.054307
05:44 WT10_278 Pos#23 lbcb.20100102.054535
05:46 ACT0329 Pos#24 lbcb.20100102.054855
05:50 ACT0342 Pos #4 lbcb.20100102.055144
05:52 WT10_402 Pos#25 lbcb.20100102.055425
05:55 WT10_408 Pos#26 lbcb.20100102.055706
05:58 WT10_409 Pos#27 lbcb.20100102.055927
06:01 WT10_381 Pos#29 lbcb.20100102.060249
06:05 WT10_385 Pos#30 lbcb.20100102.060701
06:07 ACT0399 Pos#31 lbcb.20100102.060859
06:10 WT10_410 Pos#32 lbcb.20100102.061139
06:12 WT10_368 Pos#33 lbcb.20100102.061430
06:15 ACT0331 Pos#28 lbcb.20100102.061744
06:18 WT10_384 Pos#34 lbcb.20100102.062132
06:22 WT10_353 Pos#35 lbcb.20100102.062335
06:24 WT10_366 Pos#36 lbcb.20100102.062627
06:27 ACT0329 Pos#37 lbcb.20100102.062842
06:29 WT10_227 Pos#39 lbcb.20100102.063132
06:32 WT10_155 Pos#40 lbcb.20100102.063337
06:34 WT10_176 Pos#41 lbcb.20100102.063557
06:36 WT10_195 Pos#42 lbcb.20100102.063749
06:38 ACT0299 Pos#38 lbcb.20100102.064018
06:41 WT10_197 Pos#44 lbcb.20100102.064319
06:44 ACT0250 Pos#43 lbcb.20100102.064528
06:46 WT10_114 Pos#46 lbcb.20100102.064845
06:49 WT10_163 Pos#45 lbcb.20100102.065101
06:51 WT10_201 Pos#47 lbcb.20100102.065319
06:54 WT10_254 Pos#48 lbcb.20100102.065514
06:55 ACT0303 Pos#49 lbcb.20100102.065722
06:58 ACT0305 Pos#50 lbcb.20100102.065935
07:00 ACT0275 Pos#51 lbcb.20100102.070204
07:02 WT10_350 Pos#52 lbcb.20100102.070411

Cirrus coming in, will only get worse for the rest of the night. Marco working on pointing model. Dave re-familiarizing himself with LBC - Messier 78, g-band only. 10X1SEC, 20X10SEC, 10X30SEC, different PAs to mask bleed trails.

Measuring rotator center:
EL~44, 1 degree north of M78.
PA=0, file 084032
PA=180, file 084243

New rotator center: ################################################## Xc=1031.02 Yc=2920.62 from geomap. Xc=1026.99 Yc=2921.81 from averages. ##################################################

PA=90, file 084430
PA=270, file 084631

################################################## Xc=1031.45 Yc=2923.79 from geomap. Xc=1029.43 Yc=2924.44 from averages. ##################################################

We assume: Xc=1030 Yc=2922

Made new pointing model:
* outmod LBCSX.20100102.ptmod

coeff change value sigma

1 AW +0.000 -3.12 0.584
2 AN -0.000 +23.64 0.579
3 IA -0.000 -267.31 6.318
4 IE -0.001 -27.80 1.758
5 NPAE -0.000 -1.58 7.010
6 CA +0.000 -10.71 8.790
7 HACA2 -0.000 -4.40 0.935
8 TX +0.000 +6.60 1.164
9 TF -0.001 +21.22 4.255

Sky RMS = 3.60
Popn SD = 3.96

We set this model as the default for both LBCB and LBCR in PCSInstrument.conf, loaded the model into PCS, recollimated and checked:

ACT0201 094548 @ 1047,2932 EL~57
WT10_402 095132 @ 1029,2940 EL~19
ACT0402 095439 @ 1009,2918 EL~38
ACT0346 095728 @ 1009,2946 EL~62
ACT0282 100059 @ 1005,2928 EL~23
WT10_180 100734 @ 1032,2951 EL~36
ACT0254 101046 @ 1028,2950 EL~68
WT10_069 101432 @ 1038,2940 EL~17
WT10_169 101727 @ 1030,2930 EL~38
WT10_275 102043 @ 1068,2933 EL~67
WT10_226 102458 @ 1062,2947 EL~25
ACT0326 102751 @ 1064,2905 EL~40
Pointing looks good - everything fell within a 9 arcsec diameter circle.

10:44 Collimate at El+85 Heavy cirrus now

10:59 Test Tracking/Rotator with 100s at El+85.5

lbcb.20100102.110154.fits well rounded stars!

11:06 Test Tracking/Rotator with 100s at El+87.5

lbcb.20100102.110652.fits saturated; thick cirrus and getting worse on the radar.

11:14 We call it a night

LBCB ready to be used for Science

-- MarcoPedani - 02 Jan 2010
I Attachment Action Size Date Who Comment
daq.20100102.jpgjpg daq.20100102.jpg manage 606 K 07 Jan 2010 - 00:40 JohnHill Plot of Telescope and Mirror Temperatures
pmcc.sx.thermal.20100102.jpgjpg pmcc.sx.thermal.20100102.jpg manage 410 K 07 Jan 2010 - 00:40 JohnHill Plot of SX Primary Mirror Temperatures
Topic revision: r7 - 25 Jul 2014, DouglasFisher
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