With a basic understanding of astronomy data and image processing software, you can create your own astronomy images from FITS files. "FITS," which stands for Flexible Image Transport System, is a digital file format used mainly by astronomers. In this section you can download FITS files for some of our favorite Chandra images and learn how to compose your own versions of these high-energy astronomy images. Please tell us what you think and send an email.

Start here with a tutorial

• Overview
• 3 Color X-ray Image using GIMP with Cassiopeia A
• Broadband X-ray Image using GIMP with the Crab Nebula
• Create a Multiwavelength Composite Image using GIMP with M101

Video Tutorial

• Introduction to Multiwavelength Image Processing (42.9 MB, Runtime: 5:03)

Access to additional Datasets

• X-ray Only Data
• Multiwavelength Data

Related Blog Articles

• Image Processor for a Day
• Image Genetics: Astronomy Visualization Metadata (AVM)
• Upgrading Our Views of the Universe

Handout (PDF):

• OpenFits, Unlocking the mysteries of astronomical image processing

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Revised: March 23, 2021