Simple post-stacking processes to quickly view the final result. What is Deep Sky Stacker?ĭeepSkyStacker is a freeware for astrophotographers that simplifies all the pre-processing steps of deep sky pictures. You can see an example of a star mask on the right. What is a star mask?Ī star mask is a synthetic grayscale image on which each bright enough star is replaced by a round white area which is fading to black following a curve. The pixel size was 25 ("First Generation", DSS1) or 15 micrometres ("Second Generation", DSS2), corresponding to 1.7 or 1.0 arcseconds in the source material. They scanned plates using one of two Perkin-Elmer PDS 2020G microdensitometers. What was the material of the discs used by the Sloan Digital Sky Survey? NGC 2485 is visible with it.What is a DSS image?Ī wide-field image of the area of the sky near the system Gliese 581. You can get more galaxies (etc) visible to Stellarium by toggling DSS ( Digitized Sky Survey) on.
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