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IRIS is astronomical images processing software that provides a full range of features to enhance, correct and process digital astronomical images, optimized for CCD captures. It can open digital raw formats, as well as BMP, FITS and PIC as well as images from the Buil-Thouvenot Atlas. The many features include noise suppression, distortion correction, stacking of image sequences, spectra processing, sun chromosphere image processing, frame grabbing via webcam and much more. Open and display an image fileAdjust aspect of a B&W imageAdjust aspect of a color imageSave an image fileFilteringStretchingGeometric transformationsPreprocessing of grey level images Make B&W master framesAlign stellar images (automatic methods)Align stellar images (manual methods)Special alignment functions (field rotation, ...)Stack a sequence of imagesDiphering and optimal addition of a sequence of imagesPreprocessing of Digital SLR camera imagesRemove gradient of the sky backgroundDSLR roadmap (preprocessing 2)Color / B&W conversions Load and display a Digital SLR imageSplit a CFA imageColor techniques(L)RGB techniquesMosaicingConsole commands and scriptsPhotometryAstrometric reductionSun processingPlanetary processingCosmetic correctionsAtmospheric turbulence correctionWavelet analysis and noise filteringDeconvolutionBlinking and animationSpectra preprocessingImage selectionModelisation by ellipse fittingPolarization analysisDefringingFlat-field extraction from science imagesOptimal subtractionControl of an equatorial mountRemote control of a DSLR cameraProcessing of cometary imagesCorrect optical distortionProduce High Dynamic Range images (HDR) English and French version available
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