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I've also done start-to-finish stacking in Photoshop as well. FL has a whole bunch of stretching functions to choose from but I tend to just use Arcsinh. (Since Photoshop's Curves and Levels tools only allow you to set control points with 8-bit accuracy, you don't want to try to do a big stretch all in one go.)īoth Siril and FITS Liberator have a variety of other tools which you might find useful, such as image statistics (nice to know the min and max pixel value at a glance so you can know if you're clipping the background or blowing out stars). Worked a treat and really beat using the Level or Curves tool a dozen times in PS to do the initial stretch. I occasionally had issues with getting it to handle color correctly when I was shooting with a DSLR, but your mileage may vary.įor my just-finished Horsehead image in mono, I stacked in Siril, opened the resulting FITS file in FITS Liberator and used its auto-stretch, saved that as a TIFF, and did everything subsequently in Photoshop. Ghostnote osx how to#Annoyingly, it has a nice "autostretch" for visualizing your images but it doesn't modify the image, or at least I've never figured out how to do that. ![]() I have been less successful using it for nonlinear processing (stretching, gradient removal, background calibration) but it does have those features. Siril has quite good features for stacking, although it produces tons of intermediate files that clutter up your disk and have to be deleted. ISBN 9789825320043.I have been using Siril a lot, which is free software. I swap back and forth between running DSS in a Windows virtual machine with VMWare Fusion (which I need anyway for work), and running Siril. Beginner Bass Guitar Lessons - Progressive: Teach Yourself How to Play Bass Guitar (Google eBook).
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