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ejwwest

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Everything posted by ejwwest

  1. And another with the tail vaguely visible: Comet 2014 Q2 Lovejoy by ejwwest, on Flickr
  2. With a Canon 70D and 50mm lens: Comet 2014 Q2 Lovejoy Near The Pleiades by ejwwest, on Flickr
  3. Taken with Canon 70D and 400mm zoom lens: Comet 2014 Q2 Lovejoy by ejwwest, on Flickr
  4. On 10th Jan using 50mm f1.4 lens: Comet 2014 Q2 Lovejoy by ejwwest, on Flickr On 13th Jan through light cloud: Comet 2014 Q2 Lovejoy in Taurus by ejwwest, on Flickr
  5. Thanks. I use the ICCapture software that came with the camera. I'd have played around with the controls more were it not getting very cold that night!
  6. Merge of three shots taken with Canon 70D at prime focus of Celestron EdgeHD 925 telescope - 2385mm focal length f/10. First Quarter Moon by ejwwest, on Flickr Closeups taken with Imaging Source DFK21AU618: Region around Eudoxus by ejwwest, on Flickr Area around Stofler and Faraday by ejwwest, on Flickr Region around Cuvier and Manginus by ejwwest, on Flickr Region around Julius Caesar by ejwwest, on Flickr
  7. Yes, thanks. Taken through the EdgHD 925. The photomerge was three shots taken quite quickly with my 70D but the exposure came out better than I expected and the focus is quite sharp (compared to previous efforts). The ones with the Imaging Source DFK21AU618 didn't come quite out as I hoped - need to tone down the highlights: I had to reinstall the Windows system on my laptop over the Summer, lost all the settings in IC Capture and had to reset them last night but still aren't as I remember them. The rain set in before I had processed enough of the AVIs to check them out.
  8. Taken with my DFK21AU618: Aristarchus and Harbinger Mountains by ejwwest, on Flickr Crater Gassendi and Mare Humurum by ejwwest, on Flickr Schiller by ejwwest, on Flickr Plus a photomerge of 3 shots with my canon 70D: Eleven Day Gibbous Moon by ejwwest, on Flickr
  9. I use the Canon 10-22mm EF-S lens with my Canon 70D (and previously the 40D). The focus is easy to set on manual to infinity. It's pricier than £300 but there may be cheaper ones 2nd hand. There's a fair amount of distortion on the edges which makes shots of people and some landscapes look weird but for Astrophotography that shouldn't be a big concern.
  10. Good capture! I missed the lunar transit on the 8th as the Calsky prediction was about 20 seconds off and should have checked the Heavens-Above one instead!
  11. Taken with Canon 70D and Canon 10-22mm UWA lens at 10mm. 5 shots of 30" each at ISO 100 International Space Station crossing overhead by ejwwest, on Flickr
  12. At prime focus of Celestron EdgeHD 925 scope with Canon 70D. Closeup of the International Space Station by ejwwest, on Flickr
  13. Really. Thanks for that. I must have been incredibly lucky to get these https://www.flickr.com/photos/ejwwest/sets/72157623878835436/
  14. The ISS was in shadow as it approached the moon, so I was reliant on the timings (as one usually is for Lunar and always for Solar transits). In both Calsky and H-A I have the precise latitude and longitude coded in (and the same in each).
  15. I assumed that was where they got it, but my question really concerns how often each site refreshes the parameters and why, as one gets closer to the actual time, they diverged rather than converged. Which is the most trustworthy?
  16. Last night I planned to photograph the ISS transiting the near full moon from my back garden through my telescope - a very rare event and where I could use my telescope (2395mm focal length), properly focus, track the moon etc etc. The conditions were predicted to be clear. For events like this that aren't visible from my home, I use the 100-400mm zoom and 2x extender (800mm focal length) which is very hard to focus properly and on a tripod doesn't track the moon so have to continually refocus after realigning the shot. The event was predicted on Calsky until late yesterday afternoon at 20:15:06 and for good measure I checked Heaven Above. That predicted the ISS transiting at 20:14:48. Which to believe? When I got home prior to setting up, Calsky had changed its predictions to agree with Heaven Above, so I took that as the best prediction. I set everything up. Sharp focus, tested the exposures and was tracking the moon. At the predicted time I took a burst of about 25 shots (7fps on the Canon 70D). But when I inspected them, nothing of the ISS was visible. Later that evening I checked Heavens Above again and it was showing a path that agreed with the earlier prediction of Calsky! Had I checked before the event I may have then decided to take two bursts at the different times, 20 seconds apart. Now I'll have to wait probably several years before such an event occurs again. I can't really complain about Calsky and Heavens Above as these are sites run by volunteers and funded by their own efforts and donations. However, I would be interested in the experiences of others on the reliability of either or both as this is the third event in the past year or so where the timings were out and I missed an event (2 transits of the moon and one of the sun). Calsky provides much better timing information and coordinates than Heveans Above but that's only useful if they can be relied on. I suspect that both update the orbital elements of the ISS at different times and that leads to inconsistencies and, in cases like this, unreliability.
  17. Amazing pictures. I ought to try my DFK21AU618 on the ISS sometime, but really don't see how I can hand control the CGEM mount and the chip is tiny compared to the DSLR. I could try the HD video of the 70D as it could give me more frames to stack.
  18. Probably the last opportunity this cycle. Tonight the track was much lower so much poorer images. ISS Closeup by ejwwest, on Flickr ISS Closeups by ejwwest, on Flickr ISS Crossing the Sky by ejwwest, on Flickr
  19. Yes - the Celestron one (whilst they were still making them!). Getting a decent focus continues to be a challenge in bright sunlight so some heavy unsharp mask in PSE!
  20. Taken with my Canon 70D through my EdgeHD 925. PSE 12 Photomerge refused to combine them! Sun and sunspots by ejwwest, on Flickr Sun and Sunspots by ejwwest, on Flickr
  21. Taken with the Canon 70D and 10mm ultra wide angle lens: International Space Station Passing overhead by ejwwest, on Flickr Hampshire council just replaced the street lights in this vicinity and worth comparing the reduced light pollution with this taken a few years ago: International Space Station crossing overhead by ejwwest, on Flickr
  22. I played around with the contrast and put the two side by side: Sunspot AR2036 by ejwwest, on Flickr
  23. I used my Canon 70D DSLR with the Canon 100-400mm lens and 2x extender (so 800mm focal length). The filter was a 77mm Thousand Oaks screw on filter (black plastic). This is rather more portable and convenient than setting up my telescope, though obviously lacks the resolution and clarity!
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