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This code is used to: Check and show the fits image, Overlap different images (or contours), Process the data cube preliminarily.

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hiviewer (old name: Fits_Inspect_Overlap)

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.

Notes

  • 此射电图像包的一个简要介绍在这里.

  • 欢迎关注astroR2的zhihu.

Logs

  • Newest version: v1.3 on 2023/01/01

  • Updated on 2023/01/01

    • 增加pv图。修改了一些bug
  • Updated on 2022/09/03

    • 更改包的名字为hiviewer,这个过程可能产生bug
  • Updated on 2021/01/26

    • 修改了一点默认参数,谱线可以按pixel抽取

    • 修改了把nan补0的bug

    • moment 2 支持三种type

        'variance': M2
      
        'sigma':sigma = np.sqrt(M2)
        
        'fwhm':fwhm = np.sqrt(8ln2)*sigma
      
    • tag v1.2

  • Updated on 2021/01/10

    • 增加了三种reproject方法
    • 增加了椭圆拟合一个星系,画沿长轴的cube截面
    • 更改了moudule结构,更合理
  • ** 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/

  • 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

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This code is used to: Check and show the fits image, Overlap different images (or contours), Process the data cube preliminarily.

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