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UT 20121024 AO#1

Observer:JCGuerra (LBTO), A.Puglisi remote(INAF)
Telescope Operator: Geno.B.(LBTO)
Additional AO Support: JCGuerra (LBTO)
Telescope Support: Elliot (LBTO)
Instrument Support: John M (LBTO)

STILL UPDATING

Summary

  • Retro On.

  • Startup of the DX size.

  • Telescope setup to work with the RR.

  • Alfio on line.

  • Wobble check with the updated positions for M3.

  • Failure of the wfs system, the system is recovered after a full power on.

  • Wobble on SX is checked using the led on the secondary.

  • Handover 3:40

Details

Start 09:00

Wobble test

The wobble test has been tested using different setting of the M3. The configurations were; the original laser tracker,the new positions determined on the night 20120222

New M3 values.

Setting the M3 with the values acquired on night 22nd at the focal station: FrontBentGregorian:

The values of the x and y camera lens positions are:

Rotator Camera lens
0 -100 26
30 -100 -8
60 -100 -43
90 -100 -65
120 -53 -72
150 -9 -64
180 20 -37
210 24 -7
240 11 27
270 -29 50
300 -83 100
330 -100 80
360 -100 16

The fitting value are:

# coef - coefficients of the ellipse as described by the general # quadratic: ax^2 + bxy + cy^2 + dx + ey + f = 0 # # center - center x and y # # major - major semi-axis length # # minor - minor semi-axis length coef:
a b c d e f
-0.8646190   -0.2042423   -0.4590416   -81.2786110   -7.2304467 1493.4890110

center:
x y
-47.315618   2.650526

major minor angle
88.5192 61.9085 0.2332553

Plot of the value and a fitting.

* wobble with the new M3 values:
Picture_23_wobble_newpos.png

Default M3 values.

Setting the M3 with the default values for the focal station: FrontBentGregorian: The camera lens movements are showed in the table below and the fitting coefficients.

Rotator Camera lens
0 -100 26
30 -100 -8
60 -100 -43
90 -100 -65
120 -53 -72
150 -9 -64
180 20 -37
210 24 -7
240 11 27
270 -29 50
300 -83 100
330 -100 80
360 -100 16

The fitting coefficients are:

coef:
a   b   c   d   e   f
-0.57946127   0.09911698   -0.80895022   -34.05830263   -15.08967940   3177.85384894

center:
x   y
-30.34456   -11.18569

major minor angle
81.47966 67.91946 0.2038515

the plot of the values of the camera lens and the fitting.

* wobble with the M3 default values:
Picture_22_wobble_defaultpos.png

WFS fault.

The WFS system went down at 10:28:41 UT with a lost of the all the communications, the ts8 was on so this an indicator that the power didn't go down. The system is debugged to understand the reason of the blackout . Alfio took data. The system is recovered after a full power including the software.

SX Check.

The M3 positions have been updated for SX, the SX can't be used with the retro and we decided to turn on the leds at the edges of the secondary.

The adsec and wfs AO systems are turn on and the Leds on. The figure below shows the configuration of the leds viewed from the CCD39 viewer.

* ccd39_viewer_led conf.:
Screenshot_ledconf2.png

M3 last values.

M3 is setup with the last values acquired on the 22nd. The spot is showed in the figure (Led spot on CCD39)

M3 positions: Tip:-432 Tilt:-95 Pis: 0, Sel:26.0

Rotator CCD39
degrees x y
0 33.8 43.5
30 35.2 42.5
60 34.5 41.2
90 34.2 39.8
120
150
180
210 26.5 40
240 27 42.5
270 26 44.8
300 23 43.2
360 20.5 43.9

  • Led spot on CCD39:
    Picture_26.png

The plot of the values and a fitting is showed in the figure below;

* Led spot wobble:
Picture_25.png

The same test could't be done on DX side due to a problem in the routine to run the LED.

-- JuanGuerra - 24 Oct 2012

I Attachment Action Size Date Who Comment
Picture_22_wobble_defaultpos.pngpng Picture_22_wobble_defaultpos.png manage 38 K 25 Oct 2012 - 00:35 UnknownUser wobble with the M3 default values
Picture_23_wobble_newpos.pngpng Picture_23_wobble_newpos.png manage 34 K 25 Oct 2012 - 00:34 UnknownUser wobble with the new M3 values
Picture_24.pngpng Picture_24.png manage 120 K 25 Oct 2012 - 01:04 UnknownUser Led spot on CCD39
Picture_25.pngpng Picture_25.png manage 41 K 25 Oct 2012 - 01:25 UnknownUser Led spot wobble
Picture_26.pngpng Picture_26.png manage 120 K 25 Oct 2012 - 01:40 UnknownUser Led spot on CCD39
Screenshot_ledconf2.pngpng Screenshot_ledconf2.png manage 61 K 25 Oct 2012 - 00:45 UnknownUser ccd39_viewer_led conf.
Topic revision: r3 - 26 Oct 2012, JuanGuerra
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