今日记录

1.gildas的几个命令

set match !tolerance 公差，差值，相对于下面的命令offset.

find /offset a1 a2   !搜索这个位置

find /range w e s n [unit] !

/position a0 d0 sys !搜索绝对位置

2.不同坐标之间相互转化

https://ned.ipac.caltech.edu/forms/calculator.html

 3.用python做三色图

https://www.astrobetter.com/blog/2010/10/22/making-rgb-images-from-fits-files-with-pythonmatplotlib/

https://aplpy.readthedocs.io/en/latest/rgb.html   第二个方法

4.Slicing multi-dimensional data cubes

https://aplpy.readthedocs.io/en/latest/fitsfigure/slicing.html