If the layer window does not automatically open, you can activate it through window -> layers (or by pressing F7). You should now assemble the three images into one file. Step 3: Assemble the different exposures into different layers of the same image Now you have 'liberated' the data from the FITS format, the rest is hard work in Photoshop. Repeat for the other images in the same dataset.Try different Stretch functions to enhance fainter parts of the image.Set the White and Black level sliders in the histogram to give a nice contrast without too much black and too saturated areas.Open the images one by one in FITS Liberator.Step 2: 'Liberating' the FITS format imagesīelow is a simple step-by-step example using a specific FITS file from the examples on the FITS Liberator web page: Using the Photoshop FITS Liberator plug-in. Choose the blue layer as "Source 1 Layer", "channel Grey", the red layer as "Source 2 Layer", "channel Grey". in detail this is done by: "Image - > Calculations". If it contains two layers a third "psedogreen" layer can be created (in Photoshop CS, and 7.0) by adding the two existing layers - the blue and the red layer - to a new layer and divide this by two.
Note: If your dataset contains more or less than three exposures you have to adjust the values of the hue mentioned below.
An alternative guide to making your own images using Photoshop Elelments 8 is available here in PDF format (by Thomas Kaffka). For more inforamation, visit FITS Liberator 4 page at NOIRLab.įollow the steps below to make your own images. The NOIRLab/IPAC/ESA/STScI/CfA FITS Liberator 4 is available.