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太陽黑子 發表人:小包

最近剛完成一個程式, 可以自動完成太陽黑子的座標 與 面積 測量.

對太陽黑子的影像有興趣的話, 可以來瞧瞧. 太陽黑子圖像的原始來源是 Big Bear 天文台, 影像拍的算是不錯,後來經過程式處理。



發表時間:2003-05-29 00:56:53( 回應:7 篇 人氣:5,917 人次

回應 1 回應人:gaia 回應時間:2003-05-29 21:49:58(



回應 2 回應人:小包 回應時間:2003-05-30 04:40:56(

這也沒有什麼利害啦! 一個斷斷續續寫了有好幾年的程式, 也才這個模樣.

主要是利用影像處理的技巧. 先從一張太陽的圖檔 自動找到圖像顏色變化最大的六點位置, 以最小平方法求太陽盤面的圓心與半徑.

有了太陽盤面的幾何座標, 再利用日面減光的函數 進行太陽底色的分析.
有了太陽底色資料, 就可以分離任何位置的太陽黑子. 不但可以計算該黑子 具有多少像點(面積 或者經過曲面修正的面積), 同時計算它的日面座標. 由於程式是幾乎是自動化處理, 一張太陽黑子圖 可以在 1min 中之內全部完成. 最後再根據太陽的傾斜角,幫它描繪一個網格. 目前太陽黑子的座標與面積比人工處理精密很多.


回應 3 回應人:haibehoh 回應時間:2014-03-20 12:41:42(

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