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Tutorial:
AstroImageJ, download and installation


AstroImageJ, astrophoto editing tool

  1. Introduction
  2. Download and Installation*
  3. My own downloadable macros
  4. How to use "Masterflats from CR2 files" macro
  5. How to use "Calibrated object files from CR2 files" macro
  6. How to align rggb files
  7. How to stack rggb object files

Downloading and installation

Did you find the introduction about AIJ interesting? At least for me it's very exciting, but there is something you have to know before starting to download.

This software is very advanced but also very tricky sometimes to handle. In the beginning when I started to write macros to AIJ it didn't work at all because of the heavy memory demand. I have a 20 Megapixel camera and I could load about sixty 16 bit images or thirty 32 bit images. Then all my 8 GByte memory was used. Now I have learned how to handle this and use the hard drive more intense to free up ram memory. I strongly recommend windows 64 bit system and at least 8 GByte of ram if you working with a DSLR camera.


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Here is the homepage of the specialversion AstroImageJ.

  • http://www.astro.louisville.edu/ software/astroimagej/
    AstroImageJ homepage
  • Follow the instructions in the included Readme.txt file how to setup AIJ for Windows 64 bit, very important! Then you also have to setup how much memory it should handle. You find it under edit>option>memory treads. Set it to about 75% of your installed RAM memory.

    Here is a help documentation that's very useful:

  • http://www.astro.louisville.edu/ software/astroimagej/guide/ AstroImageJ_User_Guide.pdf
    AstroImageJ help documentation
  • There is a lot of built in functions and with the special AIJ package comes a lot of astronomy related plugins.

    If you have a DSLR camera you also need this plugin to open your raw files:

  • https://sourceforge.net/projects/ij-plugins/files/ij-dcraw/
    AstroImageJ plugin for DCRAW, open DSLR cameras files
  • Normally all plugins are installed in AIJ's plugins map, follow the instructions. You need a lot more than this to handle your astroimages. I have finished my first macros to download now and I have a lot of ideas how I can use this software.

    Update:
    If you have a new camera camera it could happen that the DCRaw couldn't read its raw files correct. Then you need to update the dcraw.exe file with latest version. Google for DCRaw Windows 10 if you have a Windows computer, then no need of the CygWin.

    DCRaw directory

    See here how it looks in my DCRaw directory after I have updated the dcraw.exe file, I have renamed the old files. No need any longer for the cygwin1.dll file because this dcraw.exe file is compiled direct for Windows system.


    Next: My own macros to download

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