![]() The image looks this way because it’s difficult to get the stretch right in FITS Liberator. This image is of poor quality – the nebula is over-exposed, and there’s very little detail to be resolved. I followed the directions in “ Using FITS Liberator To Create An RGB Image” to create this image. Lastly, this is the result is from processing using FITS Liberator: It took about 30 minutes to get this result, which is the longest out of all of the times it took to process images in the various applications. While this automatic alignment is convenient and produces excellent results, plate solving adds another step to your image processing pipeline. ![]() Instead, you have to plate solve your images and then it uses the WCS coordinates automatically to align your images. SAOImage DS9 does not support manual alignment of images. ![]() In addition, the image I came up with was not aligned – there were multiple stars where there should have only been one star. I adjusted the scale of each of the R, GĪnd B channels to bring out the detail and ended up with the image you see When following those directions, I ended up with a very I followed the directions in “ Creating An RGB Image Using SAOImage DS9” to create this image. The next result we have is from SAOImage DS9: It tookĪbout 15 minutes to get this result – I had to align images and adjust blending The background is dark, and there is good tonal variation in the image. The result is very good – there’s good detail in the nebula, I followed the directions in Using ’s JS9 FITS Editor To Create RGB Images to create this image. It took about 5 minutes to produce this result, so I’m getting a reasonable result in a short span of time. There’s some detail in the nebula and the overall color is pretty good (the background could be darker). ![]() I loosely followed the directions in Processing An Image Using MaxIM DL and Photoshop to create this image. The nebula is a little over-exposed but I suppose that could be adjusted with some work, It took me about 25 minutes to create this image. This image has very little noise and the colors of the nebula are easily visible. I processed the same FITS files using JS9, FITS Liberator, I took an observation of NGC 2440 and exposed 200 secondsĮach of LRGB and processed the images to produce a set of results for Quality of the observation, and the quality of the image itself. The answer is, it depends on the image: the subject, the SAOImage DS9? What about MaxIM DL? How do I know which application is best to Is best? Does JS9 do better with some images as compared to FITS Liberator or The questions I’m often asked are, which processing application Additional funding was provided by the JWST Mission office at Space Telescope Science Institute to improve capabilities for 3-D data visualization.I have written extensively about using image processingĪpplications like JS9, Fits Liberator, SAOImage DS9, and MaxIM DL. SAOImageDS9 development has been made possible by funding from the Chandra X-ray Science Center (CXC) and the High Energy Astrophysics Science Archive Center (HEASARC). ![]() GUI elements such as the coordinate display, panner, magnifier, horizontal and vertical graphs, button bar, and color bar can be configured via menus or the command line. All versions and platforms support a consistent set of GUI and functional capabilities.ĭS9 supports advanced features such as 2-D, 3-D and RGB frame buffers, mosaic images, tiling, blinking, geometric markers, colormap manipulation, scaling, arbitrary zoom, cropping, rotation, pan, and a variety of coordinate systems. It requires no installation or support files. It provides for easy communication with external analysis tasks and is highly configurable and extensible via XPA and SAMP.ĭS9 is a stand-alone application. DS9 supports FITS images and binary tables, multiple frame buffers, region manipulation, and many scale algorithms and colormaps. SAOImageDS9 is an astronomical imaging and data visualization application. ![]()
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