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21 October 2008

PartnerObserving Log

Copied new version which Stefano sent of track_first.exe and track_next.exe to /images on CMU. Moved existing versions to track_first.20081021ut.exe and track_next.20081021ut.ext

Opened around 19:30

Noted that the collimation lut in use is: /home/telescope/TCS/Configuration/PSF/new/

LBTO@to-station:24 % more SXPMLBCCollimation.dat
# Created Mon Jul 14 16:39:06 2008 by fit.pro
# Created Mon Apr 28 03:03:23 2008 by mkcoll_lbc.pro
# Updated table because...
# To bring Y down below limits at high elevation and maintain collimation,
# deltaY -1.5 mm and deltaRx = -32.25 arcsec are applied to global offsets
# deltaY -1.00, deltaRx = -21.50 for higher temps, 20080526 dthompson/jmh
# Includes co-pointing corrections determined on 20080429 data
# Reduced X temperature coefficient from -0.08 to -0.04 on 20080605 JMH
# dX=+0.7 dY=+1.5 to improve starting collimation, cause? on 20081004 JMH
# Updated global offsets X=1.46 Y=-1.72 Z=0.226 RX=-35.3 RY=-8.2 for 7degC on 20081020 JMH
0.0 degC = Table temperature
# Data format:
#   dx        dy        dz        rx        ry        rz    comments
  -0.040    -0.140     0.100     0.000     0.000     0.000  Linear temperature coefficients
   0.000     0.000     0.000     0.000     0.000     0.000  Quadratic temperature coefficients
   0.000     0.000     0.000     0.000     0.000     0.000  Cubic temperature coefficients
   1.463    -1.720     0.226   -35.300    -8.200     0.000  Global Offsets
  2.554331e+00 -1.245294e+00  1.979250e+00 -7.019315e+01 -6.941343e+01  0.000000e+00   Offset collimation coefficient
 -5.519551e-02 -2.395030e-02 -4.164474e-02  8.444956e-01  5.057413e-01  0.000000e+00   Linear collimation coefficient
  5.104222e-05  8.959679e-04  2.680461e-05  5.184208e-03  1.457741e-03  0.000000e+00   Quadratic collimation coefficient
  0.000000e+00  0.000000e+00  0.000000e+00  0.000000e+00  0.000000e+00  0.000000e+00   Cubic collimation coefficient

took fastextra but had forgotten to enter Z11=1000nm --- no holes.

Z11=+1000nm given ok - lbcfpia works on this first pupil
032334  434   -114   -836   -292  -1041    500   1.50
032734   46   -145   -280   -528   -143     95   1.59 
note that Y=1.589 (far from 2.6 limit) here at elev=86.5 deg, while last night Y was at limit here. Temperature is much higher, T=8.02 (6.5 ambient) compared to 5 ambient last night. Y temp coeff is -0.14, so lower temps will bring us closer to limit as winter comes. Then, we'll need to change global y,rx to adjust.
032951  474     27    332     58   -107     87   1.60
033424  -159   -143   -285      0    -92     78   1.49
x,y,z,rx,ry,rz at this last position (033424) -1.843, 1.526, -0.982, 33.395, -3.423, 0

Slew to a pointing star (WT10_274)

use ptadjust to change CA and IE - Re-observe the pointing star and now it is close to the rotator center

Now try guiding - slew to NGC
035747  3335    366     47     28    439     81   1.44
035946  -244    218    251    -27     -2     57   1.32
040140   -17    -19   -120    -89      6     41   1.25
test exposure of NGC7469 with guiding --- it is guiding! so the change/update of sw worked.

040932 - images look round and 0.96" - guiding is doing well.

4.3 at center bottom right - bottom chip1 - 6 pix bottom left - also 6 pix (chip 3) 4.0 between chip2 & chip4 ... - possible field dependent coma - since the elongations point sort of toward the chip center.

run fpia at this position again...
043607 -2295   -203    129    236    188   -371   0.90
044118   -48    -94   -176     99   -136     33   1.16
.run lbcfpia .run calcabcoeffs (so now we have a -300 nm offset)
044118   -48    -94   -176     99   -136   -266   1.16
044529  -286   -181     57   -114    103    -51   1.16
044725    40    162    172     95   -135      6   1.17
take extra/intra focal pupil images (rB_rVexin4)

044942/045038

check collimation ---
045317 
050333  -244   -132    208    131    -16    -21   1.23
050545  -121    -99    189     35    -15     53   1.18
superfoc now...

050804 - 051105

slew to low elevation to check limits on Y - in prep for collim lookup table

at elev=32 deg, we are hitting no limits for collimated images: x,y,z,rx,ry 054934 -132 370 -243 -379 100 -59 1.56 after sending - we hit y=-2.6 limit.

next fastextra was not fit by lbcfpia - maybe bc previous was at a limit??

so slewed back to low elevation and tried to collimate there - does lbcfpia take hold now? yes... 060105 -13 -537 108 80 211 -112 1.33 send corrections and slew back up to higher elevation (81deg)

060542 - again lbcfpia does not pick up on it - lots of coma.

slew to intermediate elevation - 67deg now fpia takes :
061028 -3000  -1056    471    466  -1520   -565   0.92
061402  -781    974    367   -151     -1    -49   1.16
061622   -17    177    -14     12    -20     43   1.26
made change to calcabcoeffs - to subtract another 300 spherical
061622   -17    177    -14     12    -20   -256   1.26 y
061915  -159   -327     50    185     -9    500   1.12 y
062120    46     46   -236   -323    109   -463   1.15 y but no, it did not
 send - it was too fast

062313    66    293   -109    -60    128   -435   1.10
062505  -212    -37    300     91    -20    500   0.99
062713   319    -83   -162   -329     35   -536   1.19
062931    92    208      8    263    -38    500   1.21
we are in an unstable mode of this program now - by dropping the z11 offset -300nm again, the central hole must be small enough that the intensity analysis is used... changed smallHoleLim from 0.80 -> 0.95 recompiled

062931 92 208 8 -29 -49 -50 1.21 064153 367 -281 140 49 -8 -115 1.16 064340 -79 -96 -337 237 54 500 1.11 064537 48 204 -48 -188 178 -379 1.06 064716 -42 -254 -102 -3 -128 -207 1.07 064917 254 -277 -110 229 -19 500 1.36 n

going to increase smallHoleLim again: 0.95->1.1

064917 254 -277 -110 33 61 15 1.36 065309 98 332 248 4 -159 31 1.24 065517 -20 -93 355 -176 119 -152 1.11 065657 101 14 -186 251 43 500 1.33

changed smallHoleLim from 1.1->1.5: 065657 101 14 -186 34 15 151 1.33 (1.11) 070225 439 78 256 -70 39 -62 1.27 (1.00) 070439 98 -134 -133 35 2 234 1.34 (1.05) 070631 155 185 -367 -33 40 -254 1.13 (M .90) 070948 124 -23 346 -35 -46 -164 1.36 (M 1.07) 071203 36 123 -197 116 69 42 1.14 (M-factor 1.19) 071502 84 -136 325 -161 22 168 1.10 (1.15) 071741 62 -92 -46 69 -98 52 1.23 (1.06)

now take extra/intra for Andrew (RB_rVexin4)

071947/072043

071947 149 12 -188 -71 165 -11 1.14 075732 530 -136 -115 -166 -2 -151 1.41 075944 106 281 37 96 -55 -104 1.14 080155 -95 -263 -133 -60 84 18 1.51 080440 184 288 -98 23 -103 132 1.59

note astig is oscillating... (z5)

M33 image at U and r to check guiding and image quality - OK 60sec exposures images at r ~5.2 pix, 1.2" and at U 7pix, ~1.6" polaris monitor now reading 3.2" (2.2" when div by sqrt(2))

check V image - collimate: seeing is now getting worse 083621 171 -388 164 150 160 0 1.73

083844 186 364 -16 -138 79 41 1.20

Andrew called - he'd like a superfoc sequence

090001 -287 188 -36 -107 -98 166 1.31 090155 -67 -196 -151 25 -11 -7 1.49

analyze 090437 - 090652... seems to be either a focal plane tilt or curvature - biggest fwhm are always at bottom, so tilt?

  • take some collimation data:
Global offsets are (as they have been all night) X Y Z RX RY RZ 1.463 0 0.226 0 -0.82 0

elev 85 093414 5 226 331 37 -69 118 1.59 elev 77 094830 12 -175 -64 71 6 1 1.11 elev 67 095426 80 -141 -65 -13 -8 48 1.04 elev 57 (astig Z6 is oscillating...then z5) elev 55 101226 155 -237 42 -58 94 27 1.15 elev 45 101813 -13 331 -167 17 117 43 1.38 elev 35 --- Y=-2.6 limit is hit! elev 35 102314 -14 283 -375 64 321 0 2.03 102518 -248 438 -40 -162 -38 0 1.83 elev 40 103157 -778 230 699 -96 155 -196 1.28 at elev 40 we still have the Y=-2.6mm limit.

We changed Y/RX to be more positive: Y=0.6, RX=12.6" So now Global Offstes are: 1.463 0.6 0.226 12.6 -0.820

The resulting image is not well collimated... this is a coma-free pointing correction?

see 104616

should cause a pointing change in IE. Going to high elevation to readjust pointing (best for this to have elv>70)

111330 -97 216 -26 121 115 -33 0.89

ACT0301 111633 ptadjust - ca,ie were -16.8,-32.4 now are -28,-44 reobserve ACT0301 112331 another modification needed. Now CA, IE are -58, -43 reobserve ACT0301 113209 a few more iterations on pointing - better but not perfect yet.

check collimation:

at elev=84: 115906 34 -143 35 -119 -22 29 0.66 (but polaris mon says 2)

elev=56: 121549 194 90 311 0 -81 -71 1.01

elev=41 122512 40 63 -258 133 -47 110 1.22 (again, astig is oscillating) 122732 -12 -206 9 52 10 -2 1.24

elev=36: 123414 -136 -304 -81 -184 -3 -30 1.41 123607 -36 96 466 273 -20 -11 1.54

-- OlgaKuhn - 23 Oct 2008
Topic revision: r6 - 21 Jul 2009, NormCushing
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