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ngc3031

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About ngc3031

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  1. 200/1200 dobson ZWO ASI 290MC with a 2.5x Powermate (imaging camera) ZWO ASI 1600MM (guide camera) 375 gain 0.75 msec exposure Recorded at 160 fps Captured by manually tracking the Dobson while looking at the live view of the ZWO 1600, which was attached to the finder scope. Out of roughly 45.000 frames 127 contained the ISS. My tracking was pretty bad this time, I only managed to get some frames around the highest elevation. The radiators are still overexposed, even tough I reduzed exposure time by 25% compared to last time. Frames with ISS selected using PIPP. Shadows/Highlights, Levels, Curves and gif done in Photoshop. Gif looks a lot better as the single frames all suffer from optical issues.
  2. Got lucky and had another good ISS pass. 200/1200 dobson ZWO ASI 290MC with a 2.5x Powermate (imaging camera) ZWO ASI 1600MM (guide camera) 380 gain 1 msec exposure Recorded at 160 fps For an explanation of my setup see my last post. Prior to this pass I collimated my scope for the first time since forever and it seems to make a big difference. Details in the body of the ISS are much clearer, like the ripple in the radiators or the seperation of the modules. Out of roughly 72.000 frames 600 contained the ISS. The gif consists of 160 images cherry picked and manually aligned in photoshop. Auto centering in PIPP and Photoshop Auto-Align didn’t cut it this time, probably because of the faint solar panels. I hope it's ok that I'm posting 2 versions, a gif of the pass and the best frame.
  3. As for exposure settings, take these with a grain of salt. I had to use very different exposure settings on my 750d (1/600 sec and gain 3200) to achieve similar results.
  4. Had a very good ISS pass a few days ago. 200/1200 dobson ZWO ASI 290MC with a 2.5x Powermate (imaging camera) ZWO ASI 1600MM (guide camera) 400 gain 1.1 msec exposure Recorded at 160 fps The ZWO 1600 was attached to the finder scope of the dob. Combined with a tablet fixed to the telescope I could manually track the entire pass standing upright, looking at the tablet screen instead of through the finder scope. This allowed for much smoother tracking, escpecially towards the zenith. Out of roughly 80.000 frames 1300 contained the ISS. The gif consists of 70 images captured near the zenith. The frames are clearly overexposed, gonna have to reduce exposure time next time. Overall I'm quite happy with how this turned out.
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