Structural Alignment Data

Instrument Metrology Database

Mechanical Metrology

All measurements were taken with a Faro Arm Platinum (S/N: TBD). The values below are the average of the total measurements taken. See excel worksheet for individual measurements.

  • Units = inches, degrees
  • Coordinate System = As defined in MMDN3404 section 2.1.1
  • N = Total number of measurements taken
  • X, Y, Z, Alpha, Beta, Gamma = Nominal coordinates taken from MMDN3404 which are based on the MOSFIRE CAD model
  • Alpha = the angle between the X axis and the surface normal
  • Beta = the angle between the Y axis and the surface normal
  • Gamma = the angle between the Z axis and the surface normal
  • d(coordinate) = (Nominal Value) - (Measured Value)

Updated September 1, 2009

Surface N X Y Z Alpha Beta Gamma dX dY dZ d(Alpha) d(Beta) d(Gamma)
CSU 2nd Pin 8 19.6850 -15.7480 0.0000 na na na 0.0007 -0.0005 0.0000 na na na
Field Lens Mount 2 9.8425 -7.8740 -16.5933 90.0000 90.0000 180.0000 0.0035 0.0091 -0.0056 0.0029 0.0000 0.0000
FCS Mirror 3 9.8425 -7.8740 -16.5933 90.0000 72.5000 17.5000 -0.0089 0.0069 -0.0019 0.0210 -0.0524 0.0478
Pupil Mount 4 na na na 90.0000 0.0000 90.0000 na na na -0.0186 0.0000 -0.0272
1st Pupil Pin 3 9.8425 8.7093 -5.2624 na na na -0.0023 0.0015 -0.0021 na na na
2nd Pupil Pin 3 9.8425 8.7093 -1.7624 na na na -0.0015 -0.0002 -0.0025 na na na
Grating Mount 4 na na na 90.0000 55.0000 35.0000 na na na 0.0186 0.0454 -0.0451
Grating Pin 3 10.8288 13.7680 5.3136 na na na -0.0048 -0.0008 -0.0016 na na na
Grating Slot 3 10.8288 na na na na na -0.0024 na na na na na
Grating Mirror 1 9.8389 20.4652 2.9501 110.0000 122.6146 140.3315 -0.0004 -0.0035 -0.0036 0.0256 0.0058 -0.0224
Grating Grating 1 9.8394 20.4718 2.9595 132.6142 114.9680 127.0734 -0.0256 -0.0027 0.0164 -0.1045 0.0324 0.0888

Optical Metrology

All measurements were taken with a Brunson 2022 Alignment Scope (S/N: TBD). The values below are the average of the total measurements taken. See excel worksheet for individual measurements.

  • Units = inches, degrees
  • Coordinate System = As defined in MMDN3404 section 2.2.1
  • N = Total number of measurements taken
  • Orientation = The orientation of the optical axis wrt to gravity
  • X = the relative distance between the scopes reticle and the cross-hair target in the X coordinate
  • Y = the relative distance between the scopes reticle and the cross-hair target in the Y coordinate
  • Z = the relative distance between the scopes reticle and the cross-hair target in the Z coordinate

Updated September 1, 2009

Target N Orientation X Y Z
Collimator Entrance 1 parallel -0.0020 -0.0120 65
Collimator Exit 1 parallel -0.0030 -0.0140 75.25
Pupil 1 parallel 0.0060 -0.0280  
Camera Entrance 1 parallel -0.0275 0.0045 110.5
Camera Exit 1 parallel -0.0165 0.0030 127.25

  • Units = inches, degrees
  • d(coordinate) = (Exit) - (Entrance)
  • Alpha = A rotation about the +X axis and the angle is within the Z-Y plane (i.e. ARCTAN[dY/dZ])
  • Beta = A rotation about the +Y axis and the angle is within the Z-X plane (i.e. ARCTAN[dX/dZ])

Sub-Assy Orientation dX dY dZ Alpha Beta
Collimator parallel -0.0010 -0.0020 10.2500 -0.0112 -0.0056
Camera parallel 0.0110 -0.0015 16.7500 -0.0051 0.0376

Topic attachments
I Attachment History Action Size Date Who Comment
Unknown file formatigs 083109_grating_img_mirror_metrology.igs r1 manage 20.0 K 2009-08-31 - 21:27 JasonFucik Grating Turret Alignment IGES file
Microsoft Excel Spreadsheetxlsx Mosfire_Alignment_Database.xlsx r2 r1 manage 96.4 K 2009-09-01 - 18:10 JasonFucik Alignment Metrology Data
Unknown file formatcsv mosfire1.csv r1 manage 6.2 K 2009-08-31 - 21:46 JasonFucik Grating Turret Alignment Excel file
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Topic revision: r4 - 2009-09-01 - JasonFucik
 
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