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S. Schraebler

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  1. Tank you John, I have a look. Meanwhile, I annotated the image, but you might imagine I didn't do this by hand. Instead I used PixInsight's Image solving and annotation capabilities ... Best Sighard Image Solver Image Annotation Result: Center annotated, Nikkor 85mm f/1.8 @ f/2, EOS20Da 22x120s ISO800, portable AstroTrac TT320 mount. S.Schraebler, Hakos, Namibia Confusion of sources could be the image's title. It's showing the center of the Milky Way galaxy. There are some billion stars in this region, but the image has only 8.3 million pixels. F
  2. @Gilescooperuk @outgettingsubs @JohnB62 @Dan C @John Rostron @Maultierhirsch @Wikinger @v_kyr @JayUK Hello together, my 85mm AF-D Nikkor has an exceptional plane field of view, so I gave it a try, complete processing done in Affinity Photo (laugh about it, that's exactly what I suggested not to do). In this example everything worked out neatly. Registration went well, no satellites or airplanes to remove. Gradients are on holidays. Copied the stacking result above the stack and combined all 22 frames with average. A Staple averaged - nope, dragging t
  3. +1 But even FITS is getting outdated those days. However, I can agree 100% opening and previewing would be nice. But what next? FITS files are RAW subframes that will need extensive calibration, registration and stacking. I do not see Serif going this direction. That would take years of development time. Reality is, we need at least two programs. One for capture & preprocessing, then another one for post processing. Affinity Photo is a good choice for the second task. I choose PixInsight for preprocessing, there you have all that what you are searching for. Yes, Affinity Photo has thi
  4. @JohnB62 @Dan C @John Rostron Hi John, John & Dan, there is a program custom made for so called TWAN images, The World At Night: Sequator! You need Win10, but you are able to run an earlier 32 Bit version under OS X using the Wineskin Winery Wrapper. It's free, you can donate a coffee. https://sites.google.com/site/sequatorglobal/ http://wineskin.urgesoftware.com/tiki-index.php?page=Downloads https://aurigaimaging.com/download/download.php (demo version is fine, cannot save, just make a screenshot, runs in Wineskin Wrapper too) https://pixinsight.com (tha
  5. @Maultierhirsch Had the same problem before. And even with shifting and rotation it is not possible to complete the puzzle correctly because of optical distortion. It continues over the field of view and then it is so much better to let the computer do the work. IRIS already is a good tip, used Registar and Pixinsight meanwhile. I completely understand to have one program for everything and then the program to be so intuitive as Affinity Photo. However, this is beyond reality. You need a second program for registration and integration. But it's not horribly difficult and you can export th
  6. Hi Giles, I did some stacking as described in Affinity Photo's sister program PS back in 2011, you can see that in the video above. Both programs are capable to apply macros to batches, I suppose. I used Registar to generate a Lunar mosaic of out of the images itself and registered every single piece of the Lunar puzzle to the mosaic in the second run. Then I recorded two macros and applied them to the sequence, one copying a loaded image to a second image, same size just black and combined them in the way of a digital filter 80% new, 20% background, copied the image back to replace the o
  7. Hi Astro Road, created the holy grail effect with Masked Stretch in Pixinsight recently. Needed that for a Lunar Eclipse video. With Masked Stretch you have the capability to define a target background and a target foreground. By applying auto generated masks and auto generated histogram transforms, the image is being transformed iteratively in tiny steps. I append a description of the Process Container "macro" I used. Since the transformation depends on a measurement in the original image's histogram and an iterative transform to target black and white point, I cannot tell how to impleme
  8. This is the Embryo Nebula aka IC1848 in Hubble Palette as I obtain it by just combining S[II], Ha and O[III] as RGB and the final version with tone mapping, selective color and removing a lot of green from the image. Best Sighard
  9. Dear Fivel, 1. For reducing stars you can use Dust & Scratches, see https://www.sternwarte-hofheim.de/galerie/schraebler/Pixinsight/!!HDR Tone Mapping und starless Bearbeitung in Affinity Photo 1.8 V01 S. Schraebler.pdf 2. Sorry, there is nothing that rivals Dynamic Background Extraction (DBE). https://www.sternwarte-hofheim.de/galerie/schraebler/Pixinsight/!!!Pixinsight mod DSLR Workflow - Sighard Schraebler v05.pdf Best Sighard
  10. Dear Jochen, Oh yes, NGC7822 (the cluster) associated with the nebulosity (Cederblad 214 or Ced214), that's a good one! Some are seeing Medusa's face in it. There are Cometary Globules well known from Hubble's Pillars of Creation in M16, but Ced214 is much closer, so you do not need a large telescope to photograph them. And I like the object's high declination, allowing to observe this target all night from 50° northern latitude. I have to say I "found" this object, because it wasn't on my beginner's star map in late 1991. Back then, I used a 5.5 inch Comet Catcher on a GPDX mount and to
  11. Yes, see tutorial: https://www.sternwarte-hofheim.de/galerie/schraebler/Pixinsight/!!HDR Tone Mapping und starless Bearbeitung in Affinity Photo 1.8 V01 S. Schraebler.pdf Best Sighard Sternwarte Hofheim & Physikalischer Verein
  12. The Cocoon Nebula IC5146 as photographed with an 12inch Newtonian telescope, two nights collecting photons, right side is what I take from preprocessing aka Calibration, Registration, Integration, LRGB combination and nonlinear stretching, left is what I made out of it in Affinity Photo with tone mapping, starless processing, selective colors and adding stars again. Detailed description can be found in the tutorial above. Best Sighard IC 5146, also known as Cocoon Nebula, is an astronomical nebula with an embedded open cluster in the constellation Cygnus. The star cluster is called C
  13. Great Video, Jochen. I liked what you said about small steps and that you always tend to overdo something, so mixing back with the original or the step before is a good way to preserve some detail, otherwise lost in the process. Started myself very similar as you did with DSLR, small refractor and Deep Sky Stacker. I replaced Deep Sky Stacker with Maxim and Pixinsight soon (see workflow below), to be honest I don't use much of this software universe anymore, just Maxim, Pixinsight, Affinity Photo and Fotos (that comes with OS X). In time, the scopes became larger, the DSLR camera rep
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