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Astrofriend

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  • Content Count

    299
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About Astrofriend

  • Rank
    Star Forming

Contact Methods

  • Website URL
    http://astrofriend.eu/

Profile Information

  • Gender
    Male
  • Interests
    Astronomy, Cars, old stuff
  • Location
    Sweden
  1. Maybe someone here have succeeded to get a Canon 6D and a lens with built in focus motor to work in autofocus? I have asked the question on Indi forum, but no answer. The problem I have to solve with Astroberry: 1. Get the autofocus with Canon 6D lenses built in focus motor to work, now it doesn't or crash 2. Control my EQ6 mount wich have a custom gear ratio, I have updated the sourch code of EQMode (Indi) but not compiled it yet. Much better if it can be implemented direct in EQmode as it is in the Windows version. 3. My guide camera QHY5 (old version) work with windows drivers but not Indi drivers 4. I have not succeed to get the GPS receiver to work yet. It doesn't communicate, otherwise it looks to make connect. If I at least could get the lens motor to auto focus I could start to do some test. /Lars
  2. Hi, For sure parts of this is not easy. I got a clear sky and could do some outdoor test of the focuser function. After that I got a better understanding of what is not working. My notes of what is happen when try to do focusing: http://www.astrofriend.eu/astronomy/projects/project-kstars-raspberrypi4/10-project-kstars-raspberrypi4.html I like the KStars and Ekos and how it work, when I get rid of the problem I have it will be a really nice astro control software to use. /Lars
  3. Hi, Lot of comments, I think Raspberry is hot ! My mini PC with windows takes about 13 to 26 Watt, it's an upconverter included, convert 13 Volt to 19 Volt. With the Raspberry I only have a load of 5 Watt. That's very positive when planning to be more mobile. And I save weight, less cables. For a mini PC with a Windows licens I have to pay about 500 Euro, for a Raspberry 70 Euro is enough. The money I save I can spend on other equipment, and there are a lot of them I want. But yes, it's complicated now in the beginning, but fun. Now I try to implement a GPS device to the raspberry: http://www.astrofriend.eu/astronomy/projects/project-kstars-raspberrypi4/01-project-kstars-raspberrypi4.html Got some problem and it's not solved yet. By the way, you can run Windows on Raspberry, nothing I have tried. Dave, nice to hear you have it working so good. /Lars
  4. Hi, Now I have started my second try to have a Raspberry as an astroserver. My first try didn't perform well because of to weak process power. Now with the new Raspberry Pi4 the situation had changed, and the Indi drivers are more developed too. It's a bit complicated to setup the Raspberry with its Linux operating system. I'm a Window man. I have documented the first steps I have done and my plans here: http://www.astrofriend.eu/astronomy/projects/project-kstars-raspberrypi4/01-project-kstars-raspberrypi4.html I will go back later and edit the parameters to get it optimized. But if you find it interesting you can read it already now and follow the progress. It will be prefect for my portable equipment. Raspberry also these days annonced a new high resolution camera with Sony chip, maybe something for planethunting. /Lars
  5. Yes it will stay very low, but it will be back in August if I understand it correct. /Lars
  6. I have made some updates on my AstroImageJ tools, now they are collected on one page: http://www.astrofriend.eu/astronomy/tutorials/tutorial-aij-download/01-tutorial-aij-download.html /Lars
  7. Sad to read that the comet Atlas was broken apart. But now there is a new comet, Swan. Maybe better luck this time. I have made some sky charts over the area with help of CdC. The place is Sweden. http://www.astrofriend.eu/astronomy/tutorials/tutorial-comet-photography-planning/tutorial-comet-photography-planning.html /Lars
  8. I added a new Gimp tutorial, how to correct for optical vignetting: http://www.astrofriend.eu/astronomy/tutorials/tutorial-gimp-astrophotography/01-tutorial-gimp-astrophotography-introduction.html Now I can do more and more processing in Gimp. /Lars
  9. Hi Matthew, Great to herar you find it useful, thanks for the comments ! I have done some small corrections: http://www.astrofriend.eu/astronomy/tutorials/tutorial-gimp-astrophotography/01-tutorial-gimp-astrophotography-introduction.html With Gimp I can do things that I couldn't do earlier. But earlier I was more concentrated to get high quality calibrated raws. But still my astro photos are taken from high polluted area. Maybe I can get my APO refractor more protable in the future and take it to dark places. My Raspberry project is one part of that. /Lars
  10. Now I have earned more skills with Gimp. Got the selection around the stars better. I also changed my workflow to get it easier to do. http://www.astrofriend.eu/astronomy/tutorials/tutorial-gimp-astrophotography/01-tutorial-gimp-astrophotography-introduction.html Now I have to subtract the background of the DSO layer and increase the contrast of it. Coming back soon. /Lars
  11. The last thing I practise now are how to separate the stars from the DS. I got it to work, but used wrong parameters and got to big mask around the stars. http://www.astrofriend.eu/astronomy/tutorials/tutorial-gimp-astrophotography/01-tutorial-gimp-astrophotography-introduction.html I come back later. /Lars
  12. Hi, I and my girlfriend are now drawing plans to catch the comet C/2019 Y4 Atlas on photo. It's just a few weeks until it reach it's maxima for us living in the Northern hemisphere. We belive there are a lot of others that plan to do the same. We use my travel mount Star Adventurer and two cameras with telephoto lenses, a bit overloaded but easy to bring to a dark place. I have updated my comet page with examples that belong to this comet. Maybe could be interesting or of some help for you ? UK isn't far away from Sweden and the circumstances not to different from ours in Sweden. http://www.astrofriend.eu/astronomy/tutorials/tutorial-comet-photography-planning/tutorial-comet-photography-planning.html I have also this comet related page that I wrote long time ago: http://www.astrofriend.eu/astronomy/tutorials/tutorial-find-comets/tutorial-find-comets.html We wish all of you a clear sky and that you get nice photos of the comet ! Lars and Gunilla
  13. Hi, I know there are a lot of problems when comparing two images, but I have tried to do the same process on both. I used IrfanView to interpolate the two images, only to have them at the same size. IrfanView is configured to use the Lancoz algorithm. Drizzling images taken with my TS130 APO telescope has earlier always been hard and no obvious increase of the resultion. Maybe because I have terribly conditions on my balcony. Photos taken with my mobile equipment which I can take out to dark places works much better. I'm working on a Sigma APO 150 mm f/2.8 image now, still the M13 object. http://www.astrofriend.eu/astronomy/projects/project-get-higher-resolution/03-get-higher-resolution-second-test.html I'm not finished with it yet, coming soon. The goal is to both do it mathematically correct and have a pleasing look of the image, as far I can come with my light pollution. Most of the noise comes from the background. It will come more data later from the 32-bit files, but first I test this on my old images, and try to optimize the Drizzling process and the preprocess. I'm very happy already now how it works, earlier it almost chrashes everytime I did it on a big image. /Lars
  14. Hi, All feedbacks are wellcome ! I need a new workflow because the AstroImageJ doesn't have any Drizzle function, maybe I later develope one, but not now. AIJ is more aimed for microscopy. But I still want to use AIJ for the demosaicing and calibration process with my own routines and ideas. And what I do is exactly what you write, the two green channels must always be handled separately, even when you not do Drizzling. Drizzle always need more exposure because you let the photons that's normally detected by one pixel be divided on 9 new pixels (in this example), and thus you need 9 times more exposure. If I can get my heavily undersmapled images to be of more high resolution by just increasing the number of images it's a low price to pay. Of course I can't compete with professionals, but if I think like that I don't need any telescope either, I just have to look on internet and Hubble images. But no fun for me. I noted from earlier post from you that you have very high knowledge of physics/math, do you work with some astrophysics or nearby ? ps. I will do measurments on the images, but not now, now I'm very curious to see what I can do with my old photos. /Lars
  15. Hi, I have struggled with the Drizzle technique many years but had always problem to see any difference when taking images with my teleskop, shorter focal lenses has worked good. Now with faster computer, Windows10 64-bit and new updated software it works as I expected it from the beginning. The idea come already when I took my first digital astrophoto, the comet Hyakutake 1996. I read about NASA and how they use Drizzling on Hubble images to increase the undersampled images from it. I have documented my workflow here and a first test with the Globular Cluster M13 as a test object. http://www.astrofriend.eu/astronomy/projects/project-get-higher-resolution/01-get-higher-resolution-introduction.html My astrophotos with the telescope are taken from the balcony and never of very high quality, but this time it worked. /Lars
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