| Version | Change log |
| DeepSkyStacker 5.1.10 Apr 15, 2025 |
Add code to FITSUtil.cpp to process FITS keywords DATAMIN and DATAMAX when reading floating point FITS files. If present use these to determine the minimum and maximum pixel values instead of scanning the image data which gave inconsistent image scaling. This should be a) much faster, and b) should result in consistent image scaling. Also write these keywords when writing floating-point FITS files. Bug fix: Fix rounding error in "stack recap" dialogue in calculation of total exposure time. Bug fix: Resolve problems with handling of saving filelist (empty extension amongst others). Bug fix: Resolve problems with the ProcessingSettings dialogue. Bug fix: Ensure that Visual C++ runtime build 34438 is installed. Remove obsolete Score metric. If a crash occurs in the Visual C++ redistributable code, then issue a message saying: DeepSkyStacker has crashed in the Visual C++ Redistributable code, probably because that is back-level. Please download the latest version of the Visual C++ Redistributable from the Microsoft website. https://aka.ms/vs/17/release/vc_redist.x64.exe and then run it, selecting the "Repair" option Make sure the installation deletes old versions of the Visual C++ Redistributable files from the installation directory. Bug fix: Open picture file should use the Linear transformation not log(Sqrt) so that the image is displayed correctly. Implement default values for FITS keywords DATAMIN and DATAMAX which can be set using FITS/DDP settings |
| DeepSkyStacker 5.1.9 Mar 31, 2025 |
Add code to FITSUtil.cpp to process FITS keywords DATAMIN and DATAMAX when reading floating point FITS files. If present use these to determine the minimum and maximum pixel values instead of scanning the image data. This should be a) much faster, and b) should result in consistent image scaling. Also write these keywords when writing FITS floating point files. Bug fix: Fix rounding error in "stack recap" dialogue in calculation of total exposure time. Bug fix: Resolve problems with handling of saving filelist (empty extension amongst others). Bug fix: Resolve problems with the ProcessingSettings dialogue. Bug fix: Ensure that Visual C++ runtime build 34438 is installed. Remove obsolete Score metric. Bug fix: Open picture file should use the Linear transformation not log(Sqrt) so that the image is displayed correctly. |
| DeepSkyStacker 5.1.6 Jan 31, 2025 |
Bug fix: When saving the project to a file-list, a default file name is suggested which is equal to the name of the current directory. Bug fix: The circles around the stars and the comet stayed even after clearing the file list. Lower the minimum detection threshold for registering from 2% to 1%. Bug fix: Crash caused by trying to de-bayer 32 bits FITS files with the method AHD. Bug fix: AVX support to prevent Illegal Instruction problem on earlier CPU types (e.g. Xeon X5650). Bug fix: Add check box to control display of Black/White clipping in Processing panel. Bug fix: Custom rectangle produces a partly empty stacking result when the SIMD acceleration is turned ON. Implement an automatic threshold for star detection (which is the default) and a much better image quality indication (Quality) which is a Gaussian mean of star quality as compared to the Score which was the sum of all star qualities (calculated differently) and was dependent on the number of stars as well as their quality. The automatic threshold will be in the range 0.05% and 100%, and the target number of stars is ~50. The new Quality metric is primarily based on the average circularity ("roundness") of the stars in the image. It is largely independent of the number of detected stars. The background level, to which the star detection threshold refers, is now calculated locally per 250x250 pixel square rather than globally over the entire image. This compensates for any background illumination gradients. All light frame sorting criteria have been switched to use the new Quality value instead of the Score (e.g. for stacking the best x% light frames). The first light frame to register will be either the first in the frame list, or the reference frame (if one was chosen). If auto-threshold is used, the detected threshold of this light frame will serve as the basis for the threshold search of the following frames. We suggest that you ensure that the first registered light frame is not significan |
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