GIMP Plugin Registry

A set of plugins and scripts for astronomical image processing

Not intended for scientific image processing, due to gimp's 8bit depth restriction (for "pretty pictures" only).

News:

31.07.2008: gimp-plugin-astronomy-0.6
29.06.2008: gimp-plugin-astronomy-0.5
25.03.2008: gimp-plugin-astronomy-0.4

Plugins:

• Align layers using center of brightness or 2D (fourier) cross correlation or gauss fit, subpixel-resolution, with de-rotation!
• Merge layers using different mean values, including arithmetic/geometric mean, median, and arithmetic mean of x sigma around median.
• Create a background gradient (artificial flat field) from a layer by fitting a 2D 4th order polynom through pivotal points. Cut out large bright nebulae to avoid wrong pivotal point values!
• Star rounding: Round longish stars (due to tracking errors...)
• Create an artificial galaxy. Only elliptical galaxies yet.
• Create artificial stars: Using different star distributions, splitted into background, object and foreground stars. Examples:
  
  

Scripts:

• Set mode for all layers
• Set brightness / contrast for all layers
• Normalize all layers
• Subtract dark frame from each layer
• Divide all layers by a flat field
• Draw border with image information

Download latest sources or windows binaries from
http://hennigbuam.de/georg/gimp.html