StructuralAlignment < Keck/MOSFIRE

---+!! %MAKETEXT{"Structural Alignment Data" args="<nop>%WEB%"}%

[[%ATTACHURL%/Mosfire_Alignment_Database.xlsx][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 [[%ATTACHURL%/Mosfire_Alignment_Database.xlsx][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)_ 

|  *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  |  3  |  9.8389  |  20.4652  |  2.9501  |  110.0000  |  122.6146  |  140.3315  |  -0.0018  |  0.0120  | -0.0190  |  -0.0872  |  -0.0452  |  0.0987  |
| Grating Grating  |  2  |  9.8394  |  20.4718  |  2.9595  |  132.6142  |  114.9680  |  127.0734  |  -0.0728  |  0.0115  |  0.0097  |  1.0622  |  -0.4266  |  -0.7551  |           

---++ 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 [[%ATTACHURL%/Mosfire_Alignment_Database.xlsx][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_
 
|  *Target*  |  *N*  |  *Orientation*  |  *X*  |  *Y*  |   *Z*  |
| Collimator Entrance  |  3  |  parallel  |  -0.0080  |  0.0088  |  65  |
| Collimator Entrance  |  3  |  perpendicular  |  -0.0098  |  0.0040  |  65  |
| Collimator Exit  |  3  |  parallel  |  -0.0123  |  0.0125  |  75.25  |  
| Collimator Exit  |  3  |  perpendicular |  -0.0155  |  0.0110  |  75.25  |
| Camera Entrance  |  1  |  parallel  |  0.0100  |  >0.050  |  110.5  |
| Camera Exit  |  1  |  parallel  |  >0.050  |  >0.050  |  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  |  -0.0043  |  0.0037  |  10.2500  |  0.0205  |  -0.0242  | 
| Collimator  |  perpendicular  |  -0.0057  |  0.0070  |  10.2500  |  0.0391  |  -0.0317  |
Attachments
Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
igs	083109_grating_img_mirror_metrology.igs	r1	manage	20.0 K	2009-08-31 - 21:27	JasonFucik	Grating Turret Alignment IGES file
xlsx	Mosfire_Alignment_Database.xlsx	r1	manage	89.8 K	2009-08-05 - 21:40	JasonFucik	Alignment Metrology Data
csv	mosfire1.csv	r1	manage	6.2 K	2009-08-31 - 21:46	JasonFucik	Grating Turret Alignment Excel file
This topic: Keck/MOSFIRE > WebHome > StructuralAlignment
Topic revision: r3 - 2009-08-31 - JasonFucik