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PIAA coronagraph generation 2

Last updated Wed Oct 29, 22:10 HST)
Main document

Comparison between 3 baseline designs (Easy/Medium/Challenging)


Design 1

pup.prof.des1
Mshape_800000.dat.des1
optics_shape.dat.des1

Design 2

pup.prof.des2
Mshape_800000.dat.des2
optics_shape.dat.des2

Design 3

pup.prof.des3
Mshape_800000.dat.des3
optics_shape.dat.des3

3D shapes for off-axis Design 2

PIAA M1

PIAAM1_fr.dat : function f1(r)
PIAAM1_cosfitcoeff_200.dat : high accuracy Cosine fit to PIAA M1 (200 terms)
PIAAM1_OAT.dat : PIAA M1 off-axis term coefficients
3-D views: PIAAM1_3Dview_c3.jpg
PIAAM1_3Dview_c4.jpg
PIAAM1_3Dview_c5.jpg
PIAAM1_3Dview_c6.jpg

Verification:
PIAAM1_check.dat : Sample points for M1 surface, low resolution grid
PIAAM1_check_fine.dat : Sample points for M1 surface, high resolution grid
testPIAAM1shape.c : C code to read implement analytical equations and check against the "PIAAM1_check_fine.dat" file.
fitresidualM1.dat : Output of above C code: gives residuals for terms f1, OAP1, OAT1 and the overall (f1+OAP1+OAT1) terms.
f1residual.jpg : 3D view of residual on term f1
OAP1residual.jpg : 3D view of residual on term OAP1
OAT1residual.jpg : 3D view of residual on term OAT1

PIAA M2

PIAAM2_fr.dat : function f2(r)
PIAAM2_cosfitcoeff_200.dat : high accuracy Cosine fit to PIAA M2 (200 terms)
PIAAM2_OAT25.dat : PIAA M2 off-axis term coefficients
3-D views: PIAAM2_3Dview_c3.jpg
PIAAM2_3Dview_c4.jpg
PIAAM2_3Dview_c5.jpg
PIAAM2_3Dview_c6.jpg

Verification:
PIAAM2_check.dat : Sample points for M2 surface, low resolution grid
PIAAM2_check_fine.dat : Sample points for M2 surface, high resolution grid
testPIAAM2shape.c : C code to read implement analytical equations and check against the "PIAAM2_check_fine.dat" file.
fitresidualM2.dat : Output of above C code: gives residuals for terms f2, OAP2, OAT2 and the overall (f2+OAP2+OAT2) terms.
f2residual.jpg : 3D view of residual on term f2
OAP2residual.jpg : 3D view of residual on term OAP2
OAT2residual.jpg : 3D view of residual on term OAT2

PIAA system geometry check

SystGeom_termfrx100.jpg : System geometry (x is up, z is to the right). In this figure, only the terms f1(r) and f2(r) are included and the mirror deformation has been multiplied by 100x to better visualize. NOTE: by including only terms f1(r) and f2(r), the system geometry is tuned for an on-axis focus to focus system, with the input focus at the center of PIAAM2 and the output focus at the center of PIAAM1.
SystGeom_x20.jpg : Same as above, but this time all terms have been included, and the multiplication factor is 20x instead of 100x.
Page content last updated: 27/06/2023 06:35:52 HST
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