Tonight, though, looking at Mars, I happened to notice another set of opposed spikes that is, the second set is rotated about 45 degrees with regard to the first. A diffraction spike is the light you see extend from a star in your astro-images. I help with some algorithms, testing and specifications. Diffraction spikes - posted in Beginners Forum (No Astrophotography): Hey guys,So I have a 4 vein spider on my Newt, and generally notice about four diffraction spikes. very bright stars may get rough edges if the spikes are too broad where they leave the star - and that is either a focus issue or a poor seeing issue. She is a brilliant programmer and Linux expert. Then use Kappa-Sigma combines when stacking to loose the spikes as each spike is in a 1:2 minority in most pixels that are occupied by a diffraction spike. For several years I have been working with my partner Nicola on AstroDMx Capture. I give lectures to astronomical societies. evening classes for several years, but am now, largely retired. Software (for my stuff) PemPRO, SGP, PHD, Focus Boss, ASCOM, and Pixinsight on the other end. Personal equipment: TEC 140 F7 on Astro-Physics Mach 1 mount. Try changing the high sigma rejection on stacking. The Alyn Wallace/Kase is the costliest of the trio, with the Kase and Tiffen filters producing the strongest effect, perhaps too strong. I taught astronomy at the University of Swansea in D.A.C.E. Re: Keeping the diffraction spikes in a final image. Astrophotographers shooting nightscapes and tracked constellation portraits use diffusion filters to make stars pop. I also write books, astronomical articles, short-stories and poetry. I am also a member of the Society for Popular Astronomy and the BAA, I am a Fellow of the Royal Astronomical Society and a member of the European Astronomical Society. Help: Strange Diffraction Spikes - posted in Beginning Deep Sky Imaging: Hello everyone, I am not an expert in astronomical photography, I have been practicing this hobby for a short time (about 1 year). I am a member of the Swansea, Port Talbot and Barry Astronomical Societies. My interest is in getting as much as possible out of as little as possible. Many imaging enthusiasts like the look of spikes on bright stars, and they add them by placing some kind of mask in front of the aperture to mimic the effect of a Newtonian reflector’s spider vanes. I founded the international astronomical imaging group QCUIAG in 1998. The diffraction spike sets apart a star in the Hubble Ultra Deep Field. I am a retired Senior Lecturer in Biological Sciences at Swansea University and have been an astronomer since 1967. The photo on the left, through a Newtonian telescope, has spikes due to the mirror supports. Further exploration of astronomical snapshots.M3 with AstroDMx Capture for Linux, a USB-tethered.Preparing a 6” Newtonian for versatile imaging.Diffraction spikes attractive and sometimes useful In principle it consists of placing a rod or batten, either round, square or rectangular, metal or wood, across the main entrance of an optical system in such a way that it creates a diffraction spike to appear parallel to the edge of the CCD in the resulting image.
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