“天图投影上的圆”的版本间差异
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无编辑摘要 |
无编辑摘要 |
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#Then the circle in the new coordinate system is simply DecP=90-R0 |
#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 |
#change the new coordinate system back to celestial |
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*[文件:Change cor.pro.txt] |
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2013年12月19日 (四) 03:44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
- [文件:Change cor.pro.txt]