This code is used to: Inspect and show the fits image, Overlap different images (or contours), Process the data cube preliminarily.
Please read README and Fits_example.ipynb in doc directory.
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Newest version: v1.3 on 2023/01/01
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Updated on 2023/01/01
- 增加pv图。修改了一些bug
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Updated on 2022/09/03
- 更改包的名字为hiviewer,这个过程可能产生bug
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Updated on 2021/01/26
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修改了一点默认参数,谱线可以按pixel抽取
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修改了把nan补0的bug
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moment 2 支持三种type
'variance': M2 'sigma':sigma = np.sqrt(M2) 'fwhm':fwhm = np.sqrt(8ln2)*sigma
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tag v1.2
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Updated on 2021/01/10
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** IMPORTANT WARNING ** on 2020/12/11
如果使用了reproject,重新投影,改变pixel的大小、分辨率,单位一定要慎重!
确保单位是surface brightness,a unit of flux per area,比如Jy/beam,Jy/sr,W/m^2/sr等,而不是flux,比如mJy,Jy/pixel,W/m^2等。如果是flux,you will need to scale by a factor of (the new pixel area)/(the old pixel area)。
具体说明:http://research.endlessfernweh.com/convolution-and-regridding/
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Kapteyn Package for Python 3 是一个功能更加齐全的包,download the file kapteyn-3.0.tar.gz。
v1.1之后的版本我会把Kapteyn、reproject中的convolve_reproject功能替换出来,以免Montage的方法不好安装。他们同样不适用于flux。 on 2020/12/1