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Darth Takahashi

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About Darth Takahashi

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    Sub Dwarf

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    The Netherlands
  1. A little more saturation with "Match Colour" and "Reduce Noise" with PhotoShop to smooth out the background a little more. Corrected the slight orange colour cast that I brought into the final image by accident...
  2. Excellent image, well done. Buying the scope second hand makes it an even better bargain!!! :grin: I just picked up an WO FD72 mint condition for only 250Euros!!! (Guide scope for the Tak's)
  3. Nice image, almost as good as mine!!! but my location is worse that your!!! Nice to see you back here posting images.
  4. Great work Martin, the second one is better, since its less stretch and showing less noise! A dark site would really help out a lot here. I spent some time at Mick's where he has mag. 6 sky's and it make a big difference. The sub's are noticeably smoother with a lot less noise etc... Never mind, one day I'm going to retire to a mountain top (at least 1500m) with perfect sky's and no light pollution... I might move in with Prokyon if he'll have me!!!
  5. I hate you! I need a step ladder to be 3m above sea level !!! Beautiful shots, very atmospheric but it makes me feel very depressed to know that I'm buried under all that fog!!! What was the location you were imaging from?
  6. As you know well Martin, imaging with a focal length greater than 1500mm becomes very challenging for lots of reasons, the weather included! The native focal length of the Mewlon is 3000mm which is ideal for planetary imaging but not much else. The original reducer didn't really improve matters either, since it only brought the focal length down to 2500mm. The new corrector baffle already brings the focal length down to 2600mm, a shade over F10 while eliminating off axis coma and give 2 micron stars!!! But the real benefit comes with the new reducer, this take the Mewlon down to F7 or 1750mm focal length, this gives me a much more manageable scope and a very nice image scale for the smaller galaxy's etc... Take the reducer out and put a barlow in and you have a planetary telescope again... the new system makes it much more versatile overall. For my part, I have learn't to be a little more patient and to drift align on the pole which is mandatory at these focal lengths... Its a lot easier using short focal length refractors...
  7. That's looking very nice indeed, lots of detail in the edge of the galaxy.
  8. Looking really nice Peter, let's hope that you can finish it soon...
  9. Excellent work, especially so with a DSLR... It amazing what you can achieve with a modern digital camera.
  10. I manage to get a few more hours of H Alpha on the bubble last night before the mist rolled in here in Holland. The weather conditions are making the transparency destinctly average at the moment, so unless I get some clear nights with exceptional transparency I'm calling it quits for now with the bubble. This image is now approximately 8.5 hours worth of data with 4.5 coming from H Alpha. Unfortunately, on the second image run I had some rotation between session, therefore, I have had to blend the two successive images together to create the final image that you see here. Can't wait to get my obsy finished. No flats used, thats not intentional, I just have no way at present to flat field such a large telescope... something for my Christmas list I think! I hope you like this image as much as I do. I'm very happy in that I now feel that I have a new telescope. I would never have dreamed of using the Mewlon in this manner before the modification. Can't wait to feed it some gallaxies in the spring!!!
  11. Very nice result, I too like the first image; I can't help feeling that the noise has increased slightly in the second image but that could be down the the stretch thats been applied? That also might explain the star colours!!!
  12. Winsorzied sigma clip needs to be set during the image integration in PI. You can find it under the pixel rejection tab... The optics definitely need to be looked at since as you know the stars aren't right at all and its very distracting in the image. The galaxy looks great and you are getting some nice detail coming through to the core. This just goes to show that extended object are very tolerant of optical issues but your not going to have any success with open cluster and globular clusters any time soon, well not until you solve the optical issue. If the scopes under warranty I'd take it back to the point of sale and ask them to fix it for you? If not and your not comfortable performing the necessary surgery on it yourself, try taking it to an astronomy club I'm sure someone can help you. (Per is right, it sounds stupid that the clip tightness can cause this issue with a thick primary mirror but it can! I have experience a similar issues with my own newt) Good luck
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