Re-discover the Night Sky #2: stacking images in Gimp

Stacking time-lapse photos of the night sky allows you to create 'star-trail' images.

It is possible to get good results using Gimp by selecting the appropriate layer mode.

This post also describes how I hacked one of the existing Gimp scripts.

Scheme-ing with The Gimp: batch photo resizing

Gimp (a.k.a. The Gimp) is an image editor, very popular with Linux users and possibly a handful of Windows users.

It includes support for scripting tasks via Python (which most young programmers think is the bees-knees) and Scheme (which most Computer Science students think is the work of the devil).

Caught between the devil and the deep blue sea, this post focuses on Scheme.