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thomasv

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About thomasv

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    Cambridge, UK

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  1. Yes, it consists of two lenses held at a distance by a spacer ring. Sorry my first picture is not very sharp, the middle bit between the lenses is the spacer ring. I've moved all three parts over to the extension tube, so hopefully will be OK.
  2. The SW field flattener for Evoguide 50ED is not suitable for DSLR or mirrorless cameras, as it's backfocus is 17.5mm. My mirrorless camera (Fuji X-T1) has a flange to sensor distance of 17.7mm and the T2 to camera adapter ring that I have on order is 8.3mm thick, so the original flattener tube is too long by 8.5mm. I've noticed however that the extension tube that comes with the evoguide is approx. the correct length. Unfortunately, the internal diameter of the extension tube is slightly (by about 0.3mm) smaller than the diameter of the lenses, nothing that cannot be solved by a couple of hour
  3. Hi, great picture. Just a question as you have obviously captured well the Ha wavelength, do you have the EOS R or EOS Ra ? Thanks.
  4. Hi, great photo. Just wondering why you convert first to tiff, AA7 does handle RAF files. Interested in any benefit as I also have XT1 and AA7, but always just work with RAF out of the camera.
  5. Thank you for the reply. I wonder if I should get Astro Pixel Processor, I hear from more and more people who use it, might as well try the free 30 day license. I have AstroArt, maybe I'm just not good enough at using it.
  6. Beautiful. Wonder how dark your sky is and are you using any LP filters? Do cal with darks / flats, etc? Thanks.
  7. Wow, how lucky is that? Are you going to stack the comet subs and combine it with the meteor picture? I wouldn't even know where to start ...
  8. I would say a planetary camera would probably give you far too small field of view. The tail is at least 6deg long.
  9. I think DSS now supports fuji raw, worked for me. "The list of the DSLRs supported by the latest version is available on the libraw web site."
  10. Another sleep-deprived night in a muddy field, glad these comets don't come around too often Fuji X-T1, Samyang 35mm f1.2 @ f2 & vintage Asahi SMC 50mm f1.7 @ f2.8.
  11. Almost didn't get up when the alarm went at 1:50, but glad I did, first clear morning to see the comet, plus bonus noctilucent clouds. Fuji X-T1 / Samyang 135mm @ f2.8, 20 x 9sec iso400.
  12. Wow, thanks, interesting. I think I'll stick to OSC camera, should the clouds ever clear here.
  13. Great pictures. So, I assume the 2nd one was taken with a tracking mount, and did you just stack the subs on the stars? I suspect there isn't any detectable movement of the comet against the stars in 2.5mins.
  14. Thanks. I did play a lot with focus using the magnified live view (canon 6D) and picked these out from about 50 shots in total. And applied a touch of sharpen in Gimp.
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