About QLFits
Allows you to see FITS files right into your Finder, without opening the file. It automatically generates on-the-fly a colorized header, with images and/or spectra below. It supports multi-extension FITS files. Even better, it detects ESO keywords, and build automatic links to the proposal abstract, the file summary, and even the weather conditions. A free demo is available.

Features:
- Support for multi-extensiom FITS files!
- On-the-fly preview of 2D images!
- On-the-fly preview of 1D spectra!
- For 2D images: On-the-fly thumbnail of 1st extension that contains data
- For 1D spectra: On-the-fly thumbnail of the spectrum
- Display of the value of the “OBJECT” header keyword, with large fonts.

What’s New in this Version
- SnowLeopard compatibility (both 32 and 64 bits)
- Added a preference pane to customize previews
- Added ability to dynamicaly (though temporarily) resize header frame.