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2006-4-3

Data Cube

归档于: 观测手记, 本站杂记 @ 1:34 pm

3月16日实测天体物理课第一次实习,在太阳塔取的三维数据,成谱,成图,只是数据上周末才拿到手。先由狭缝扫描取得不同位置的光谱,再以此做任意扫描位置、任意狭缝的单色图,方法不算太复杂,但很巧。说起观测的实际操作几乎没什么好讲的,全是自动控制,要做的事情无非在计算机上设置一些参数,再用鼠标点击几下而已。不过利用数据能挖掘出的玩意还是很多很多的……

实际观测是在两个波段上做的,H-α和Ca II 8542。

Band A:H-α

某一扫描位置的谱线。

H-α的光谱线。

还算幸运,所观测的日面区域有黑子。这个图是根据光谱数据做的单色像。

Band B:Ca II 8542

Ca II 8542的光谱线。

能最终做成类似效果就更好了(这个图是和气象有关的东西,具体我也不很清楚),不过本人对IDL的掌握还没到这个层次……


PS: I would like to take these observations as my first step to professional observing. That reminds me of the lyric of Hymn to Red October by Basil Poledouris: Let’s go; the sea is waiting for us. The vastness of the sea is calling to us, and the tides! ……Of course, here the sea should be sea of star lights, and there are still too much for me to learn. The path towards the stars is endless……

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