MODS2 AGw Commissioning - 20141117 UT

Observers: DMiller, JCGuerra, OKuhn (Tucson)
Telescope Operator: SAllanson (LBTO)
AO Support: JCGuerra
Telescope Support: JLittle (LBTO)
Software Support: TGolota
Instrument Support: JPowers (LBTO)
Engineering Support: DAshby

Summary

Details

01:00 Steve sent binocular preset to LUCI1 and MODS2

01:15 The collimation on both sides are a bit "funny".
  • The right looks like a bagel, i.e. z11 or z22
  • The left looks like a butterfly.

01:30 It looks like GCS is not sending high order zernikes (Z12-z22). It may be that there is some Z22, which looks like Z11 and so Z11 increases with no feedback. Left has Z11 at 1440. Had 1800 earlier. Right has only 520.

02:20 Turn off active optics on the Right, clear ActOpt on Prim and Sec. Run IDL collimate_multiple. Well collimate with high order zernikes.

02:45 Move LEFT guide probe in Z while AO loop is closed. Find delta z = 5.0 mm give ~0 focus on WFSC. Before would send ~-500 nm of Z4. Also would send ~-400nm of Z11, ~-100 Z7. All other less than 100nm.

03:30 Measure best guide probe focus position on MODS2. Olga has list of images. -250 nm on secondary may give a bit smaller PSF, but all values from +250 to -500nm give about the same.

04:00 Taras suggested changing in .cfg file the WFS_zernike_send parameter from 11 to 22. Did this on both sides and now Z4-22 sent to PSF on both sides. Good collimation.

04:30 Preset to OC_NGC129 at 61 el. The SH spots are well centered in grid. Do not need to change guider hotspot on RIGHT

04:38 RIGHTCollimation around the field.
  • Collimate on-axis, stop guiding, move probe out and take an image
  • Star near the center is too bright. Will move to Stone_A1 field

05:00 Preset to Stone_A1 of off-axis guide tests with MODS and TTM with LUCI1
  • Troubles with Stone_A1 and A2 fields

05:35 RIGHT BS9101 could not find off the y axis star
  • PA = 124, -1.6, -125
  • PA = 132, -1.5, -124.7

05:56 change PCSInstrument.conf MODS: RIGHTXYFLIP true false to false false
  • Restart PCS
  • Preset to on the y-axis star, but none found
  • Set XYflip back and restarted PCS. No star found
  • Realized we had to put IE, CA back
  • 11:00 pm MST so handoff to LBTI

09:46 Configure telescope back to RDG and LFBG

10:10 Preset NEB_NGC1931 ACTIVE on both

10:20 RIGHT preset, mode=acquire, GS=19, /YAXIS (PA=0.92)
  • gp -1.734, -136.850 (pa_.92.fits)
  • pa = 4.0, gp= -1.677. -136.563 (pa_4.fits)
    • gp 1.677, -136.563 (pa_4_opp.fits)
  • pa = 6.0, gp= -1.638, -136.165 (pa_6.fits)
    • pg 1.638, -136.165 (pa_6_opp.fits) *gp 11.0, -136.167 (pa_6_11.fits) Star back to hotspot, same as pa_.92.fits

10:45 Change MODS RIGHTXYFLIP from true false to false, false in PCSInstrument.conf
  • preset pa=.92. Guiding in X is opposite. loose guide star
  • pa = 6.0 (pa_6_opp_flip.fits) Star in the same place on image as (pa_6.fits)

10:55 Change MODS RIGHTXYFLIP back to true false in PCSInstrument.conf
  • preset pa=0 gs=19 start there pg -1.6 -136
  • preset pa=0 gs=21 a star is there gp -1.95 -132.496
    • took a wfsc image with IDL and header has PCS_X_RE = 39.5 and Y_RE = -131.685
    • /home/dlmiller/data/20141119/rdg/right_wfsc000119_dd.fits
    • several stars in field, but not clear if the correct one.
    • back to /YAXIS

11:16 preset, gs=19, PA=0.92
  • right_wfsc000120_dd.fits
    • probesfpx=0.000069
    • probesfpy=-136.5262
    • pcs_x_re = 0.03471
    • pcs_y_re = -136.520
    • xprobe = -1.734
    • yprobe = -136.849

11:23 preset, gs=19, PA=6.0 (star move to left of image)
  • right_wfsc000121_dd.fits
    • probesfpx=-0.08686
    • probesfpy=-135.843
    • pcs_x_re = -12.0543
    • pcs_y_re = -135.987
    • xprobe = -1.638
    • yprobe = -136.164
  • gprobe 12.05, -135.987 (star move back to hotspot)

12:06 Found a bug in my iif_preset routine. If TS is NE 0 then the calculated PA of /YAXIS is not correct.

12:10 preset gs=19, pa=20 (star move off image) * right_wfsc000122_dd.fits
    • probesfpx= -0.32297
    • probesfpy= -128.4803
    • pcs_x_re = -44.59
    • pcs_y_re = -129.027
    • xprobe = -1.309
    • yprobe = -128.78
  • gprobe 44.59, -128.48 (star move back on hotspot)

12:23 preset active gs=19 pa=20
  • find another star and guide and wfs
  • info in right_wfscimage000269.fits

12:25 preset active gs=10 pa=0.92
  • find correct star and guide and wfsc
  • info in right_wfscimage000274.fits

12:33 take mods image of NGC1931, exp=1 image 23

12:36 mods exp=4 OK

12:37 dice5_collect, dist=5, iter=1, exp=4.0, frames=1, NO_BG
  • start image 25
  • script stop because offset failed.
  • make offsets by hand.
  • offset 0,3 image 28
  • offset 0,6 image 29
  • offset 0 -3 image 30

12:55 preset to GS=26, TS=41 for LEFT, TRACK for RIGHT
  • mods image 31
  • offset 0, 3 image 32
  • offset 5,5 image 33
  • offset -5, 3 image 34
  • offset -3, -5 image 35
  • offset, 5, -4 image 36
  • offset -3, -2 image 37

13:08 preset BS9126, ACTIVE, GS=0 /both

13:10 collimate on both sides

13:20 run IDL collimation with synthetic reconstructor.
  • telescope collimated for several iterations
  • put on +1000 Z5
  • act opt taking off z5
  • focus running away
  • change sign of focus correction from -1 to 1
  • converge (mostly, a lot of background light with dawn approaching)
  • put on +500 Z9
  • take off Z9
  • seems to work

13:30 Steve closed the telescope

13:31 Darks with MODS 38->47

-- %USERSIG{DougMiller - 2014-11-19}%
Topic revision: r4 - 19 Nov 2014, DougMiller
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