“天图投影上的圆”的版本间差异
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（以“*On the atioff projection map, how to draw a circle (e.g. telescope field of view)? suppose, telescope pointed at (Ra0,Dec0), FOV is a circle with radius R0 #Change ...”为内容创建页面） |
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*On the atioff projection map, how to draw a circle (e.g. telescope field of view)? suppose, telescope pointed at (Ra0,Dec0), FOV is a circle with radius R0 |
*On the atioff projection map, how to draw a circle (e.g. telescope field of view)? suppose, telescope pointed at (Ra0,Dec0), FOV is a circle with radius R0 |
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#Change the coordinate system from celestial to the designed coordinate (pole at Ra0,Dec0). |
#Change the coordinate system from celestial to the designed coordinate (pole at Ra0,Dec0). |
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#Then the circle in the new coordinate system is simply DecP=90-R0 |
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#change the new coordinate system back to celestial |
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2013年12月19日 (四) 03:39的版本
- On the atioff projection map, how to draw a circle (e.g. telescope field of view)? suppose, telescope pointed at (Ra0,Dec0), FOV is a circle with radius R0
- Change the coordinate system from celestial to the designed coordinate (pole at Ra0,Dec0).
- Then the circle in the new coordinate system is simply DecP=90-R0
- change the new coordinate system back to celestial