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Dave R

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  • Website URL
    http://gate.undef.org.uk/photos/gallery.html?img_dir=Astronomy

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    Male
  • Interests
    Guitar, Chess, Cricket, Linux, Programming, Internets.
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    Rugby
  1. WaveSoarer - thanks. bri - good luck with yours. Coco - thanks for the tip.
  2. This is 10 x 30 seconds at ISO 800. 150mm Newtonian on EQ6. Nikon D60 at prime focus. I forgot to take dark frames and flats are beyond my level yet. I used GCX for stacking and the GIMP to adjust curves/levels.
  3. World chess champion Vishy Anand and Grandmaster John Nunn. They're doing a talk at the London Chess Classic on Wednesday.
  4. This isn't a question of views or opinions. It's a question of historical fact. People who deny historical facts are on the fringe, at best. Please explain exactly what you mean by that. The supposed "anomalies" in photographs are simply cases where the reality of photographs taken on the moon does not match the ill-informed expectations of members of the public, usually lead on by con artists like the one you link to below. Jack White deliberately uses dishonest tricks like this and common misconceptions about perspective like this to mislead people. Most, if not all, of these are covered at Clavius or have been dealt with on its forum and/or at the Bad Astronomy and Universe Today forum. If you have any evidence please provide it. And I mean evidence, not the unsubstantiated claims of conspiracy nuts and/or con artists. Begging the question. Before asking what someone's motive might have been, you need to provide some evidence that they have done whatever it is you are accusing them of.
  5. Do you have any reason that isn't dealt with here?
  6. Here's what I use... Sky charts and planning: XEphem. Webcam capture: Qastrocam-g2. Centering planetary images before stacking: Ninox. Stacking: Registax (v4 and v6) running under Wine. Post processing: GIMP.
  7. I've been using a non powered mount for webcam shots for a while. Just got my first powered one a few days ago. I've found that while Registax manages with sequences where the subject drifts across the field of view, it often doesn't work when you combine several runs which cause larger jumps in the position of the subject. You can get around that by centering the subject before you use Registax. There are a few programs that will do that for planets. I've had good results using ninox. For the moon I've not had any decent results using Registax 6 (may well be my fault rather than the program), but Registax 4 has worked for me as long as I stick to a single alignment point. I haven't tried version 5, so you may be better off with that rather than 4. I haven't combined separate runs for the moon. I guess it's possible but I couldn't automate it so I didn't think it was worth the effort.
  8. Here's what Dr Van Allen himself had to say about it... Clavius: Environment - radiation and the van allen belts
  9. It took an image of Copernicus crater. (The Apollo hardware is far too small to be seen by Hubble -- it can resolve down to about 90 meters on the moon.)
  10. You can get them if you turn up the gain, overexposing Jupiter. Then paste a separately processed Jupiter over the overexposed one.
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