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jjosefsen

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    172
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About jjosefsen

  • Rank
    Star Forming
  • Birthday 26/07/1985

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  • Gender
    Male
  • Location
    Denmark
  1. The EQ3 DSO Challenge

    I have one of those as well. 🙂 but mine is getting sold of. Again - nice images, I particularly like the M51..
  2. The EQ3 DSO Challenge

    That would be the focal ratio. fratio=focal length/aperture. is it a skywatcher explorer 150p?
  3. The EQ3 DSO Challenge

    Nice! Those seem a lot better. What focal length are you imaging at?
  4. The EQ3 DSO Challenge

    Aaaah ok..
  5. The EQ3 DSO Challenge

    I dont know what you use to process images, but PI, Star tools and I even think PS has tools to help remove this, could be worth as shot as it is very invasive.
  6. The EQ3 DSO Challenge

    Im not sure that is something flats can cure (assuming it is the bottom right you are talking about), looks more like light polution to me..
  7. ED80 v 130P-ds

    Guiding will take your AP to another level, it really makes a big difference. ☺
  8. The EQ3 DSO Challenge

    Last weekend I had an amazing 3 nights in a row to image - so I almost doubled the number of imaging sessions I have had since trying AP. Lots of lessons learned: Not having a goto system and having to "man handle" the scope to slew it to targets, has a very negative impact on PA. I suspect the flimsy tripod of the EQ3 has something to do with this.. I had achieved a very good polar alignment with Sharpcap before imaging, at the end of the session I did a test with Sharpcap again and the PA had gone from "Excellent" to "Fair" (the actual numbers are lost as I can't find my notes from that test..) Securing the drawtube with the focus lock screw on the SW ED80 shifts focus a bit, otherwise it holds focus quite well! Another reason to get the motorfocuser.. I need to get better cable management!! APT is a pretty good piece of software..! The pointcraft utilities in APT are so handy for someone like me without goto, as when I'm starhopping to my targets, I can solve a 10 sec snapshot and have the coordinates and FOV shown to me in Cartes du Ciel or Stellarium. Got some valuable experience on getting data over multiple nights. GOTO will make this much much easier. Saturday and Sunday were particularly good, monday had quite a bit of wind, but I managed. Gathered some more data on M33, initial measurements by PI seems to show it being superior to my original data, so my capture is progressing. All in all I managed to get data on: M33 (Triangulum) B33 and NGC2024 (Horse head and Flame) NGC7023 (Iris) NGC7380 (Wizard) Quite a haul that is.. Unfortunately I have a very limited view of the sky from my site here at home, so I can't get as much data on one object pr. session as I would like. I have attached a preliminary edition of my Flame and HH image, because we need more pics dammit! Found this one quite hard to process, it was very noisy, possibly because it is so low in the horizon, and I completely mucked up the framing and had to crop heavily. Good night!
  9. M42

    Wow..
  10. I'm no expert, but I imagine one should strive to do this every time, for exactly the reasons you mention? It seems like less than ideal to stack the stacks.
  11. I did this with the RACI version and all I needed was the adapter from modernastronomy. I reached focus by adjusting the front lens.. Very easy..
  12. ED80 v 130P-ds

    Good info here, I have been thinking about getting the motor focuser, I also find that the locking screw shifts the focus.
  13. Dither with PHD2

    I have been using the nikon version of byeos for a while and just switched to APT. Byeos is a really good piece of software, and easy to use. You will not go wrong there. APT can do a little more here and there, has better focus assist tools (I think) and seems to be adding new features faster. Next on their list is auto Meridian flip and autofocus between subs. It is also cheaper.. The point craft tools in APT are very strong, and for someone like me without goto, it has been amazing and has really helped me get on target faster. This alone is reason enough for me to go with APT over byn/byeos.
  14. ED80 v 130P-ds

    My M33 with my ED80.
  15. ED80 v 130P-ds

    Why do you think galaxies are not feasible with the ed80?
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