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han59 posted a topic in Discussions - SoftwareMy new free stacking program ASTAP, Astrometric STAcking Program is just released as version ß0.0.7a. I'm looking for beta testers to test the functionality and suggest improvements. It uses FITS files as input and is released currently for MS-Windows only but a Linux version will follow. Conversion from PNG, TIFF to FITS is possible but only in 8/24 bit resolution. Webpage: http://www.hnsky.org/astap.htm Description: ASTAP is a free stacking program for deep sky images. This program can view and stack astronomical FITS images using an astrometric solution. It uses a local version of Astrometry.net or PlateSolve2 to find the astrometric solution. With the solution the astronomical position of each pixel can be calculated. Main features: Stacking images including Dark Frame and Flat Field correction. Filtering of deep sky images based on HFD value and average value. Automatic call to local Astrometry.net or Platesolve2 for the astrometric solution. FITS viewer with swipe functionality. Results can be saved to 16 bit or float (-32) FITS file Export to 16 or 32 bit integer TIFF files, grayscale or color or simple PNG or JPEG. Mosaic building covering large areas using the astrometric linear solution. Some pixel math functions and digital development process