| 1 |
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{ SCCSid "$SunId$ LBL" } |
| 2 |
< |
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| 1 |
> |
{ RCSid: $Id$ } |
| 2 |
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{ |
| 3 |
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Source distribution coordinates (degrees). |
| 4 |
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| 5 |
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Theta is measured from the negative z-axis. |
| 6 |
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Phi is measured from the positive x-axis (0 degrees) |
| 7 |
< |
towards the negative y-axis (90 degrees). |
| 7 |
> |
towards the positive y-axis (90 degrees). |
| 8 |
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| 9 |
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srcB_vert and srcB_horiz are angles |
| 10 |
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used in type B photometry. |
| 39 |
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cylcorr(v) = A1 * v / cylprojection; { cylinder correction } |
| 40 |
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| 41 |
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src_theta = Acos(Dz) / DEGREE; { 0-180 } |
| 42 |
< |
src_phi = mod( Atan2(Dy, -Dx) / DEGREE, 360 ); { 0-360 } |
| 42 |
> |
src_phi = mod( Atan2(-Dy, -Dx) / DEGREE, 360 ); { 0-360 } |
| 43 |
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{ bilateral symmetry } |
| 44 |
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src_phi2 = tri( src_phi, 180 ); { 0-180 } |
| 45 |
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{ quadrilateral symmetry } |
| 46 |
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src_phi4 = tri( src_phi, 90 ); { 0-90 } |
| 47 |
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| 48 |
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{ Type B photometry coordinates } |
| 49 |
< |
srcB_vert = atan( -Dx/Dz ) / DEGREE; |
| 50 |
< |
srcB_horiz = Asin(Dy) / DEGREE; |
| 49 |
> |
srcB_vert = atan2( -Dx, Dz ) / DEGREE; |
| 50 |
> |
srcB_horiz = atan2( Dy, Dz ) / DEGREE; |
| 51 |
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{ w/ symmetry } |
| 52 |
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srcB_vert2 = abs( srcB_vert ); |
| 53 |
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srcB_horiz2 = abs( srcB_horiz ); |
