LOGO.049
FGS 2R2 (SN 2004)
AMA moves 2 and 3
10/3/00
right attitude/right approach/right alongside
www.goodrich.com
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10/3/00
LOGO.049
AGENDA for FGS 2R2 AMA Move
Results from post – mirror move analyses
FFOV S-curves and field dependence
Strategies for next 2 mirror moves
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LOGO.049
Results from Post-Mirror
Move Analysis
The AMA move of 2009.153:21
Move the X axis pupil to the face of the Koester’s by +0.1 mm
Move the Y axis pupil to the face of the Koester’s by +1.0 mm
Analytical methods
Resulting S-curves were fit to a database of decentered S-curves
Resulting S-curves were fit to a Levenberg-Marquardt LSF routine
Data were compared for consistency
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LOGO.049
Results from Post-Mirror
Move Analysis
• Computed decenters resulting from the first AMA move
Test
File Name
SCFitter X
decenter
Pos Mv
Xcor X
decenter
SCFitter Y
decenter
Xcor Y
decenter
(mm)
(mm)
(mm)
(mm)
4
scpos1f_956
1
9.56
-0.1222
-0.1
0.3153
0.4
6
scpos8f_956
8
9.56
-0.0895
-0.1
0.2801
0.3
8
scpos5f_956
5
9.56
-0.0261
0.0
0.4223
0.6
10 scpos1f_931
1
9.31
-0.0743
-0.1
0.3287
0.4
12 scpos8f_931
8
9.31
-0.0899
-0.1
0.3035
0.4
14 scpos5f_931
5
9.31
-0.0228
0.0
0.3947
0.6
16 scpos1f_1045
1
10.45
-0.0692
-0.1
0.3126
0.4
18 scpos8f_1045
8
10.45
-0.0533
-0.1
0.2772
0.4
20 scpos5f_1045
5
10.45
-0.0118
0.0
0.4202
0.6
Indicates good agreement
• Position 8 decenters: X = -0.1 mm, Y = 0.3 to 0.4 mm
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LOGO.049
Full FOV Test Set S-curves in Y
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LOGO.049
Full FOV Test Set S-curves in X
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What if Scenarios for X and Y
Decenters
Proposed decenter move of
-0.3 mm in Y only yeild results
similar to 2003 FFOV decenters
2003 Full FOV Test
Proposed decenter move of
-0.3 mm move in Y only results in
-0.1 mm decenter at position 8
Proposed decenter move of
-0.3 mm move in Y only results in
+0.1 mm decenter at position 8
POS
1
2
3
4
5
8
X decenter
(mm)
0.07
0.04
-0.01
-0.05
-0.03
-0.02
Y decenter
(mm)
-0.01
-0.05
-0.15
-0.02
0.08
-0.03
X decenter
(mm)
Y decenter
(mm)
-0.01
-0.05
-0.15
-0.02
0.08
-0.03
Propose no additional move in X
use current decenter -0.09 mm
2003 Full FOV Test
POS
1
2
3
4
5
8
X decenter
(mm)
0.07
0.04
-0.01
-0.05
-0.03
-0.02
Y decenter
(mm)
-0.01
-0.05
-0.15
-0.02
0.08
-0.03
X decenter
(mm)
0.00
-0.03
-0.08
-0.12
-0.10
-0.09
Y decenter
(mm)
X decenter
(mm)
Y decenter
(mm)
-0.08
-0.12
-0.22
-0.09
0.01
-0.10
X decenter
(mm)
Y decenter
(mm)
0.12
0.08
-0.02
0.11
0.21
0.10
Best Y scenario
for the centerline
Current X scenario
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LOGO.049
Summary
Recommendation for second move:
Y axis decenter at position 8 is between 0.3 and 0.4 mm. Recommend
undershoot (-0.3 mm) move to optimize S-curves along centerline
Second move uses pos 8 for analysis:
Move -0.3 mm in Y only
M1 = -12 steps and M2 = + 12 Steps
To balance the centerline decenters (S-curves) there are options for
the third move. (See previous charts)
This assumes the FFOV/TS field dependent decenters are baseline.
Third move uses pos 8 for analysis:
If resulting Y decenter from the second move is -0.1 mm, move +0.1mm in Y only
If resulting Y decenter from the second move is +0.1 mm, stop
If resulting Y decenter from the second move is +0.0 mm, stop
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