Astigmatism characterization

reproducibility of astigmatism at 90deg after slewing to 26deg

  • el=90deg
    • closed loop, bin 2
    • saved data: tracking number 20110118_212134
    • saved flattening command: test_astig_00.sav

  • slewing from 90 to 26 and back to 90

  • el=90
    • closed loop
    • saved data: 20110118_214657
    • saved flattening: test_astig_01.sav
    • wrt previous flat at 90deg PtV about 2um

  • slewing from 90 to 26 and back to 90

  • el=90
    • closed loop
    • saved data: 20110118_215614
    • saved flattening: test_astig_02.sav
    • wrt previous flat at 90deg PtV about 2.6um

  • Check of stability of astigmatism with time keeping el=90
    • 20110118_220053
    • 20110118_221424
    • 20110118_223516
    • 20110118_225213
    • 20110118_231941

Measure of astigmatism hysteresis

Note: the rms value is just indicative (rms from MirrorGUI positions), real value of astig will be found after reducing data.

At el=90deg the shell is set using flattening test_astig_00.sav.

Taken offset on MirrorGUI. The rms in the table is given from MirrorGUI: position rms wrt last taken offset

Elev(deg) TrackNum rms [um] Note
90.00 20110119_013551   Local Time 18:30
90.00 20110119_013650    
80.00 20110119_013951 1.4  
80.00 20110119_014010    
70.00 20110119_014144 2.4  
70.00 20110119_014228    
60.00 20110119_014337 3.0  
60.00 20110119_014404    
50.00 20110119_014501 3.3  
50.00 20110119_014521    
40.00 20110119_014612 3.6 Local time 18:45
40.00 20110119_014625    
30.00 20110119_014725 3.8  
30.00 20110119_014737    

At 26deg AdSec was ripped because of 100% SkipFrame due to high force around +Y of central membrane. In order to avoid that we will stop to 30deg hereafter.

Go back to zenith. Remind that a first 90-28-90 loop has been done before next measurements (important because hysteresis)

Closed the loop at zenith, waiting for HP offloading and taken offset on MirrorGUI.

HP reference position: (x,y,z,Rx,Ry,Rz) = (0.0, 1.73, 3.95, -320, -38.0, 0.0)

Elev(deg) TrackNum rms [um] Rx [as] Ry [as] Note
90.00 20110119_020514        
90.00 20110119_020528        
80.00 20110119_020647 1.5  
80.00 20110119_020700        
70.00 20110119_020751 2.6      
70.00 20110119_020804        
70.00 20110119_020921        
60.00 20110119_021016 3.2 58.5 -5.8  
60.00 20110119_021031        
50.00 20110119_021259 3.6 72.0 -6.0  
50.00 20110119_021314        
40.00 20110119_021432 3.9 80.6 -5.7  
40.00 20110119_021448        
30.00 20110119_021617 4.1 84.4 -5.0  
30.00 20110119_021631        
40.00 20110119_021908 3.2 80.2 -5.2  
40.00 20110119_021922        
50.00 20110119_022103 2.2 72.5 -5.4  
50.00 20110119_022118        
60.00 20110119_022232 1.4 59.6 -5.4 Local Time 19:20
60.00 20110119_022246        
70.00 20110119_022400 0.8 42.3 -4.2  
70.00 20110119_022413        
80.00 20110119_022506 0.4 22.8 -2.6  
80.00 20110119_022542        
90.00 20110119_022723 0 1.3 0.1 Local Time 19:30
80.00 20110119_022848 1.4 21.9 -2.6  
80.00 20110119_022918        
70.00 20110119_023015 2.6 41.4 -4.4  
70.00 20110119_023029        
60.00 20110119_023123 3.2 58.8 -5.5  
60.00 20110119_023136        
50.00 20110119_023234 3.6 72.6 -5.9  
50.00 20110119_023247        
40.00 20110119_023459 3.8 81.4 -5.4  
40.00 20110119_023520        
30.00 20110119_023612 4.1 84.8 -5.1  
30.00 20110119_023627        
40.00 20110119_023725 3.3 81.6 -5.0  
40.00 20110119_023747        
50.00 20110119_023838 2.3 73.2 -5.3  
50.00 20110119_023854        
60.00 20110119_024039 1.4 60.2 -5.3  
60.00 20110119_024107        
70.00 20110119_024237 0.8 43.1 -4.3  
70.00 20110119_024251        
80.00 20110119_024403 0.3 23.7 -2.5  
80.00 20110119_024515        
90.00 20110119_024925 0.2 1.6 0.0  
90.00 20110119_024941        
90.00 20110119_025002        
80.00 20110119_025111 1.4 22.2 -2.5  
80.00 20110119_025130        
70.00 20110119_025235 2.5 41.7 -4.5  
70.00 20110119_025301        
60.00 20110119_025350 3.1 58.9 -5.6  
60.00 20110119_025410        
50.00 20110119_025456 3.6 72.9 -5.7  
50.00 20110119_025515        
40.00 20110119_025608 3.9 81.5 -5.6  
40.00 20110119_025722        
30.00 20110119_025813 4.1 88.1 -4.9  
30.00 20110119_025840        
40.00 20110119_025946 3.3 81.7 -5.1  
40.00 20110119_030033        
50.00 20110119_030127 2.3 73.6 -5.4  
50.00 20110119_030139        
60.00 20110119_030243 1.4 60.5 -5.2  
60.00 20110119_030304        
70.00 20110119_030412 0.8 43.8 -4.2  
70.00 20110119_030430        
80.00 20110119_030545 0.3 23.8 -2.4  
80.00 20110119_030611        
89.46 20110119_030700 0.1 2.3 0.2  
90.00 20110119_030741        
80.00 20110119_030921 1.3 22.8 -2.4  
80.00 20110119_030940        
70.00 20110119_031041 2.5 42.2 -4.3  
70.00 20110119_031059        
60.00 20110119_031217 3.2 59.7 -5.5  
60.00 20110119_031238        
50.00 20110119_031343 3.6 73.6 -5.5  
50.00 20110119_031402        
50.00 20110119_031434        
40.00 20110119_031550 3.9 82.2 -5.6  
40.00 20110119_031603        
40.00 20110119_031908       Dataset without positions
30.00 20110119_032010 4.1 86.1 -4.5 Dataset without positions
30.00 20110119_032047       Dataset without positions
40.00 20110119_032247 3.3 82.9 -4.9 Dataset without positions
40.00 20110119_032301       Dataset without positions
50.00 20110119_032411 2.3 74.5 -5.0 Dataset without positions
50.00 20110119_032434       Dataset without positions
60.00 20110119_032536 1.4 61.4 -5.0 Dataset without positions
60.00 20110119_032552       Dataset without positions
70.00 20110119_032651 0.8 44.6 -3.9 Dataset without positions
70.00 20110119_032707       Dataset without positions
80.00 20110119_032839 0.3 24.5 -2.4 Dataset without positions
80.00 20110119_032916       Dataset without positions
90.00 20110119_033044 0.3 2.9 0.4 Dataset without positions
90.00 20110119_033056       Dataset without positions

Went down to 0deg and back to 90deg (to measure hysteresis loop in the 0-90 range. Remind that first travel to 0deg is not part of the stable loop in this range.

Elev(deg) TrackNum rms [um] Rx [as] Ry [as] Note
90.00 20110119_040634 0.1 0.2 0.1 Dataset without positions
90.00 20110119_040701       Dataset without positions
80.00 20110119_040804 1.5 21.3 -2.3 Dataset without positions
80.00 20110119_040818       Dataset without positions
70.00 20110119_040927 2.6 41.4 -4.3 Dataset without positions
70.00 20110119_040946       Dataset without positions
60.00 20110119_041201 3.1 59 -5.4  
60.00 20110119_041328        
50.00 20110119_041540 3.5 72.8 -5.3  
50.00 20110119_041553        
40.00 20110119_041656 3.8 81.7 -5.5  
40.00 20110119_041712        
30.00 20110119_041756 4.1 84.9 -4.7  
30.00 20110119_041819        

Saved current shape at 30deg in test_astig_03.sav

Go to 0deg and back to 30deg

Loaded shape saved at 30deg: test_astig_03.sav

Elev(deg) TrackNum rms [um] Rx [as] Ry [as] Note
30.00 20110119_042555 3.2 84.6 -3.2  
30.00 20110119_042628        
40.00 20110119_042729 2.4 81.3 -4.5  
40.00 20110119_042804        
50.00 20110119_042911 1.7 72.5 -5.1  
50.00 20110119_042930        
60.00 20110119_043041 1.2 59.2 -4.9  
60.00 20110119_043102        
70.00 20110119_043216 0.8 43.0 -3.9  
70.00 20110119_043240        
80.00 20110119_043358 0.6 23.6 -2.1  
80.00 20110119_043424        
90.00 20110119_043611 ? 4.1 0.4  
90.00 20110119_043636        

The mirror starts to SkipFrames 100%. To be checked why from logs. Forced to rest the shell. Applied flat: flat_400modi_20110115_1.sav

Elev(deg) TrackNum rms [um] Rx [as] Ry [as] Note
90.00 20110119_044041 0.1 1.4 0.5  
90.00 20110119_044053        
90.00 20110119_044239 0.1 1.3 0.5  
90.00 20110119_044305        
80.00 20110119_044433 1.5 22.1 -2.3  
80.00 20110119_044454        
70.00 20110119_044555 2.6 42.3 -4.2  
70.00 20110119_044641        
60.00 20110119_044738 3.2 59.8 -5.3  
60.00 20110119_044753        

Slew from 60deg to 90deg

Elev(deg) TrackNum rms [um] Rx [as] Ry [as] Note
90.00 20110119_045038 0.1 1.81 0.4  
90.00 20110119_045110        

-- ArmandoRiccardi - 19 Jan 2011
Topic revision: r5 - 19 Jan 2011, ArmandoRiccardi
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