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About Astrofriend

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    Star Forming

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    Astronomy, Cars, old stuff
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  1. Hi, Thanks for the comment. I took more photos the last night, I got what I think is an Iridium flash. http://www.astrofriend.eu/astronomy/astronomy-photo/meteor-shower/perseids/perseids-2020/perseids-2020.html /Lars
  2. When you have a lot of fun stuff you always think, is there another way I can use it ? I bought recently an used GoPro Hero5 Black camera. It's excelent to do time lapse movies with. But could it be used for astrophotography ? I have in mind doing time lapse of meteor showers. When I use my DSLR with a mechanical shutter I use 1/100 of its life time every night I use it for time lapse. With the GoPro camera there is no mechnical shutter, but will it be sensitive enough ? A very rough estimate is that it only have 1/10 of the sensitivity per pixel. But I'm curious, I want to test it. I collected some information here and test that I have done: http://www.astrofriend.eu/astronomy/projects/project-gopro-as-timelapse/01-project-gopro-as-timelapse.html At the end a link to last night Perseid meteor shower. And it really works, but only catch the strongest meteors, but the camera is small and I can have it in my pocket so very easy to bring out in the dark and setup. /Lars
  3. I have already earlier written an article about the old observatory at Stockholm in Sweden where I live. Only 30 minutes away from my home by the subway. A friend to me, Nippe, told me that he had written an article about that observatory's history. I got permission to use it on my homepage. I have translated it to english (not perfect but I hope you understand the information) and implemented it among my earlier photos from the observatory. http://www.astrofriend.eu/astronomy/observatory-sites/stockholms-observatory/stockholm-observatory.html Nippe's history article is very interesting, a lot of information about the observatory that I wasn't aware about. Enjoy reading ! /Lars
  4. 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
  5. 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
  6. 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
  7. 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
  8. Yes it will stay very low, but it will be back in August if I understand it correct. /Lars
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
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