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ejwwest

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Everything posted by ejwwest

  1. This stack of 11 shots of the International Space Station transiting the sun was taken at Houghton, Test Valley, Hampshire at 1210 on 2nd January 2012. It was taken with a Canon 40D with a 100-400mm zoom lens and 2x extender (focal length 800mm). ISO 800, 1/1000s exposures at f/11. A Thousand Oaks filter was used.
  2. ejwwest

    Hi from Hampshire

    Thanks. I may check that out but I don't have the facilities to actually track satellites (there are some excellent shots of the ISS on FlickR which have computer tracking of it in real time, presumably with a GPS as well). My technique for the ISS is to use Calsky to get the exact coordinates and to point the telescope to that (with my old C8 I was dependent on it going close to a reasonably bright star) and take a fast burst as it entered the finderscope. With a bigger scope, very accurate mount, computer tracking and lots of preparation one could do a lot more!
  3. Hi... I'm James West. I live in Chandlers Ford Hampshire and have been an amateur astronomer for 40 years. I have been using a Celestron C8 for the past 20 years but recently upgraded to a Celestron CGEM EdgeHD 925. Equipment: Celestron CGEM EdgeHD 925 Moonlite Tri-knob focuser Canon 40D DSLR with 100-400mm Zoom with 2x extender and other lenses. Various filters (1.25" B/G/Y/R Orion Skyglow and UHC, Baader OIII) - need to gradually get 2" versions Baader Hyperion 13mm eyepiece Various 1.25" Celestron Ultima eyepieces. Light pollution where I live is very bad and seeing conditions not great either. Large trees obscure my NW to SW horizons and houses to the S and E make it difficult to observe at low declinations. I put many of my astro photos up on Flickr: Collection: Astronomical One of my ISS shots (taken through the C8 last April) was shown on Sky at Night in Sept 2011 and I have had photos published in Astronomy Now (2008 Solar Eclipse), BAA Journal and "The Astronomer".
  4. Thanks. I presume I could autoguide using ST-4 with the DMK21AU618 if connected through a laptop and using guiding software like PHD? My current thought would be to reuse an old 50mm finder from my old C8 when I eventually get around to making an autoguider.
  5. I have a Celestron CGEM EdgeHD 925 scope and use a Canon 40D DSLR for astrophotography (examples here: EdgeHD 925 - a set on Flickr ). I recently added a Moonlite Tri-knob focuser to improve the focusing and whilst that seems to have improved the quality of DSOs, it shows up the limitations for moon and planets from poor seeing etc. I'm looking for advise on a CCD or video camera that I can use for the moon and planets but also at some point in the future for autoguiding (as that's the next challenge to overcome!). My budget would be about £300ish. Thanks. Equipment: Celestron CGEM EdgeHD 925 Moonlite Tri-knob focuser Canon 40D DSLR Various filters (1.25" B/G/Y/R Orion Skyglow and UHC, Baader OIII) - need to gradually get 2" versions Baader Hyperion 13mm eyepiece
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