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gost

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gost last won the day on June 16 2014

gost had the most liked content!

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About gost

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  1. Yesterday I got a tip from my dear friend Peter Rosén in Stockholm that Jupiters moons Io and Europa were up to something special. I got my gear ready and did this short animation. Its taken between 20:10:37 and 20:55:00 UTC using my 8" telescope with a 2.5x PowerMate and a Imaging Source DBK21 CCD-camera. As you can see from the still frame, at one moment the two moons were perfectly aligned at the right hand side of Jupiter. Thanks Peter for the tip!
  2. I just noticed I've installed the wrong firmware in my hand control. I've installed the latest firmware for the AllView hand control and not the SynScan v4 controller, could explain a thing or two :-)
  3. I have the same problem with mine. I set up the mount according to the manual with the telescope facing polaris. Then I selected the brightest star in the southern hemisphere. The hand control told me to slew to planet Jupiter since it was the brightest spot. Next I choose Polaris and the mount starts slewing and is completely off. After stopping it actually points the telescope downwards towards the ground, but it looks to be in the right direction. Tried it over and over again with different stars but when slewing to polaris I always get the same downwards result. Any suggestions?
  4. One of my favorite areas in the night sky, the Orion Constellation. This is the lower half of the constellation showing the Orion belt and the sword. The halo effect around the brightest stars is due to some mist in the air at the moment I took the picture. This halo effect also caused the difference in star colors to be more prominent which I think is very interesting to see. Images stacked and calibrated in PixInsight and final processing done in Photoshop CC. Nikon D810A - Nikkor 180mm f/2,8 AI-S @ f/4 10 min. (20 x 30 sec.) ISO 1600 https://instagram.com/Astrofotografen
  5. Wide field shot of our Milky Way behind a radar tower. The green color on the dome is some sort of color that reflects light. To my naked eye the dome didn't look lit at all. Four shot panorama with a Nikon D810A, Nikon AF-S 14-24mm f/2.8 @ 14mm f/4.0, 30 sec. ISO 3200.
  6. You're correct, I wasn't guiding and 60 sec subs gave me some trailing, that's why I went for 30 sec.
  7. Mike, this final image is somewhat cropped, here is an unedited single frame for you to evaluate, shot at f/4.0. The image is quite compressed with a low jpeg quality to reduce file size, but you should be able to evaluate the star quality. I did some tests at f/2.0 and f/2.8 but I didn't nail the focus on them so I have to redo them. I also did a test at f/5.6 and then the stars looked really good even in the corners on the D810A.
  8. Thanks guys for your kind words.
  9. Yes, tracking was done with my Celestron CGEM mount.
  10. This is a 45 minutes exposure (90 x 30 sec, ISO 2200) using a Nikon D810A with a Nikon 200mm f/2.0 lens at f/4.0. I stacked the images in Pixinsight and then processed the final image in Photoshop. No darks, bias or flats was taken or used.
  11. Hi I just posted my Nikon D810A review on my blog http://blogg.astrofotografen.se/2015/05/nikon-d810a-review.html Thought some of you might be interested in reading it. /Göran
  12. Thanks for all your comments, we really appreciate it!
  13. Thanks everyone. Alexandra, it's a continuous sequence that is speeded up 5 times. Check my blog for more information on how I did it http://blogg.astrofotografen.se/2014/06/bts-sunset-with-sunspots.html
  14. Hi guys! Finally we (7 Swedish amateur astronomers) are done with a big joint project we started back in December in 2013. Together we have caught 560 images of Jupiter during 90 days and from all that we made our own flyby and close encounter with Jupiter. Below is a movie that explains how we did it and how it turned out. Enjoy!
  15. Yesterday I went out to shoot a sunset I've planed since last summer. This time of the year, the Sun passes right behind a big radar tower if you stand at the Swedish National Biathlon Arena in Östersund. The radar tower is located about 10 km away from the arena in a small village called Ås. I shoot the movie using my Lunt 80mm PST to capture the structures on the Sun. The timing was perfect and the Sun looked really nice since it was full of sunspots and big filaments.
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