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Everything posted by jwr

  1. jwr

    Solar System

  2. jwr

    20110318 Moon

    From the album: Solar System

  3. This is also a nice online resource. James.
  4. Smashing picture. M51 will be my first target with my new imaging setup... if the clouds ever lift! Are you autoguiding? James
  5. That's a nifty tool... VLM=5.42, Bortle=6 for me... not bad. James.
  6. Did a bit of digging and I think it's a Mac / Safari problem. Seems to work fine when I switch to the Chrome browser. James.
  7. Yep - same problem here. My guess is that your webserver isn't setting the content type correctly. If I manually download the link I get a valid image, it just breaks in the browser. James.
  8. Very cool - thanks Doc. James.
  9. That's a fantastic result and very well presented. This is the sort of thing that got me interested in astronomy in the first place. More of the same please! James.
  10. That's very cool. As for your processing issue how about producing the image in two passes? The first for the background (let the asteroid get removed) and the second for the asteroid alone. When doing the asteroid pass don't worry that the background gets messed up, just build a mask when you combine the two image passes. I'm not a DSS user and I tend to write my own processing software, so my advice may be a bit overcomplicated. I don't know if any of the off-the-shelf programmes have an easier way to do this. I know PixInsight has processing masks, but I don't know how that applies to stacking. James
  11. That's a stunner... wonder if I could machine up some brass fittings for my Celestron SCT. James
  12. Absolutely stunning. I'm itching to get out and start shooting subs for my current mini-project. James
  13. I was rather pleased with the results of my first imaging session with my new toys. As the Moon was dominating the night sky it made an obvious target. This image was the product of 211 candidate sub-images which were whittled down into a mosaic of 63 final tiles. The mosaic was built in Photoshop and had a final tidy-up with the deconvolution tool in PixInsight. The full image weighs in at about 1.2GB. A pity I missed a small corner, but not bad for the first night out. James.
  14. Very well done! That puts my meagre dozen to shame - will have to have a session tonight while the Moon is dominating the night sky. James.
  15. That is breathtaking - so much detail in the high resolution version. James.
  16. @Merlin66 - cheers! Very pleased with my new setup. I have a background in astronomical imaging but I've always used the equipment belonging to universities etc. It's nice (but a little fraught) to finally start to build my own system. James.
  17. I don't thing the resolving power of your typical telescope is anywhere near enough to see something so small. For example the big 8m ground based telescopes would probably only resolve down to about 150m on the moon. James
  18. Anti-technology sentiments always leave me baffled. Humankind is a species of tool makers - we always have been. The advancement of tools allows the species to advance. I do understand the concern that go-to mounts remove some of the skill involved, but at the same time it makes the hobby more accessible to more people - a big advantage as far as I can see. As mentioned by previous posters, the go-to technology, if used correctly, can be a valuable learning tool. James.
  19. Luckily no snow here. It usually doesn't get this close to the coast. Plenty about 10 miles inland though. Looks like I'm clouded in for the next week though It might be my imagination, but the more I looked at M42 the more colours I could pick out. Seemed to be a mix of lilacs, blues and turquoises - very pretty. James.
  20. I recently acquired my first proper telescope and luckily had 3 good clear nights this past week (doesn't that contravene one of the rules of buying new gear?). The first night was spent learning the scope and the alignment procedures. After a few tries I was successfully hitting most targets on the nose. The second night was a true bounty of great sights. I started with M42 and was blown away! To my eye there was a lovely blue-ish tinge to the nebulous region and I could discern a fair number of quite dim stars within the area. After that great start I tracked over to Andromeda and managed to get a good few minutes of viewing before a stray cloud decided to park in front of my scope. The cherry on the top of the evening was Saturn rising above the trees. I tracked over and there it was. Shimmering and distorted but with clearly visible rings. I experimented with a few eyepieces but atmospheric distortion meant that I couldn't really push the magnification. I spent a good 30 minutes just watching Saturn track higher in the sky. Just as I was about to call it a night the local farmer came past in his Land Rover. He stopped and was curious about what I was looking at. I let him take a look and to say his jaw dropped would be an understatement. It goes to show that you don't need to be an astronomy nerd to be stunned by seeing an image of a planet over a billion kilometres away. -J
  21. My favourite space film, and possibly my favourite film of all is "Sunshine". It's utter nonsense, but the atmosphere of the film is utterly compelling. Shame about the third act though. I also rather like Outland, Mission to Mars and Forbidden Planet for much the same reasons. -J
  22. Thanks for the warm welcome and kind comments. -J
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