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Current Pointing Model
Gregorian Pointing Coefficients
| Azimuth Pointing Terms (DeltaA*Cos(E)) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | -0.5640 | 1 | Horizontal Collimation |
| b0,1 | -0.0270 | Sin(E) | El Axle Collimation |
| d0,1 | -0.1105 | Cos(E) | Az Zero |
| b1,1 | -0.0465 | Cos(A)Sin(E) | Zenith E-Tilt |
| a1,1 | -0.0257 | Sin(A)Sin(E) | Zenith N-Tilt |
| Elevation Pointing Terms (DeltaE) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | -13.0073 | 1 | El Zero |
| c1,0 | 0.0465 | Sin(A) | Zenith E-Tilt |
| d1,0 | -0.0257 | Cos(A) | Zenith N-Tilt |
| b0,1 | 11.8018 | Sin(E) | Asymmetric Gravity |
| d0,1 | 13.3512 | Cos(E) | Symmetric Gravity |
Note: Corrects for sign error in track tilt terms in previous analysis when converting from TPOINT terms to harmonic terms. The order in which the "raw" and "observed" positions have been switched according to what TPOINT assumes. Uses the "parallel" option in TPOINT instead of "chained".
Prime Focus Pointing Coefficients
| Azimuth Pointing Terms (DeltaA*Cos(E)) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | -0.9778 | 1 | Horizontal Collimation |
| b0,1 | 1.0878 | Sin(E) | El Axle Collimation |
| d0,1 | -1.3523 | Cos(E) | Az Zero |
| b1,1 | 0.0495 | Cos(A)Sin(E) | Zenith E-Tilt |
| a1,1 | 0.0617 | Sin(A)Sin(E) | Zenith N-Tilt |
| Elevation Pointing Terms (DeltaE) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | -9.3837 | 1 | El Zero |
| c1,0 | -0.0495 | Sin(A) | Zenith E-Tilt |
| d1,0 | 0.0617 | Cos(A) | Zenith N-Tilt |
| b0,1 | 11.7268 | Sin(E) | Asymmetric Gravity |
| d0,1 | 8.6382 | Cos(E) | Symmetric Gravity |
Prime Focus Pointing Coefficients [NO Focus Tracking]
| Azimuth Pointing Terms (DeltaA*Cos(E)) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | -0.9778 | 1 | Horizontal Collimation |
| b0,1 | 1.0878 | Sin(E) | El Axle Collimation |
| d0,1 | -1.3523 | Cos(E) | Az Zero |
| b1,1 | 0.0495 | Cos(A)Sin(E) | Zenith E-Tilt |
| a1,1 | 0.0617 | Sin(A)Sin(E) | Zenith N-Tilt |
| Elevation Pointing Terms (DeltaE) | |||
|---|---|---|---|
| Harmonic Term | Value [arcmin] | Functional Form | Physical Meaning |
| d0,0 | 3.13 | 1 | El Zero |
| c1,0 | -0.0495 | Sin(A) | Zenith E-Tilt |
| d1,0 | 0.0617 | Cos(A) | Zenith N-Tilt |
| b0,1 | 6.9 | Sin(E) | Asymmetric Gravity |
| d0,1 | -10.0 | Cos(E) | Symmetric Gravity |
Note: Assumes an axial focus (Y = 1030 mm) and a lateral focus (X = 560 mm).
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