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Post by digitalsky on Jul 15, 2008 22:55:34 GMT
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Post by tmcewan on Jul 15, 2008 23:24:20 GMT
Quite a display, brightness 4, lots of bands and waves with textured/mottled patches. Filled the western half of the sky, up to the zenith, from around 22:00-22:15 UT Here's the view from here at 22:24UT, just before the sky filled with cloud.
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Post by digitalsky on Jul 15, 2008 23:32:41 GMT
Excellent shots! A bit lower in the sky from Selsey
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Post by digitalsky on Jul 15, 2008 23:41:55 GMT
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Post by tmcewan on Jul 16, 2008 0:00:44 GMT
Hi Pete,
Fantastic image. The mottled, textured NLC in your photograph was also very prominent here - quite a sight through 10x50's!
Tom
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Post by Jay on Jul 16, 2008 1:07:41 GMT
Also spotted from Eastleigh. Spotted it on the way back from Salisbury, at first it seemd to be higher but by the time we got back to Eastleigh the main display had gone down to about 20 degrees. I posted a few pics in the early warning section, heres one of the best. Fantastic images above by the way, mine always seem to be grainy, even though I am using a low ISO (ISO 200) should i use even lower? i would love to get really crisp images like the ones above, maybe a better camera would help!
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Post by scotweather on Jul 16, 2008 5:55:51 GMT
Fantastic images everyone. There did seem to be a lot of it and bright too last night. Pity I couldn't get out with the camera last night though I have taken a couple of pics from the back garden which I will post later.
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Post by tmcewan on Jul 16, 2008 8:46:09 GMT
Nice work John! Any technical, hardware/software details?
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Post by digitalsky on Jul 16, 2008 9:24:08 GMT
Great videos John. In terms of the NLC's changing rapidly, it's their position that's shifting rather than rapid structural developments. That appeared to be the case for last night's display anyway. I took a number of experimental still frames at 30s intervals and although there's a lot of sideways movement, the structural changes are much more subtle. If I get time later today, I'll animate the results using a stuctural knot as the aminations point of reference. The horizon will shift but the NLC's should appear frozen in position. If I get time
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Post by digitalsky on Jul 16, 2008 10:35:52 GMT
Hi John,
I didn't mean to imply that structures can't change rapidly, what I meant but didn't convey very well, was that last night's structures that I'd grabbed didn't change fast on the 30-second frame-rate time-scale I was using.
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Post by digitalsky on Jul 16, 2008 11:43:55 GMT
That's a bad image I'm imaging the Sun at the moment so the NLC anim will have to wait until later.
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Post by digitalsky on Jul 16, 2008 12:36:07 GMT
Curiosity got the better of me and I've put together a short 7-frame animation aligned on the brightest knot of NLC in the centre of the image. It's fascinating to move the alignment point between features and watch these structures develop. The interval between each frame is 30-seconds. www.digitalsky.org.uk/atmospheric/IMG_3186-sequence-anim-proc.gif
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Post by digitalsky on Jul 16, 2008 12:59:13 GMT
Photoshop and ImageReady.
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Post by markh on Jul 16, 2008 16:05:28 GMT
I took some pictures of the display as well, though until my own PC is sorted, they'll have to stay on the memory card.
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Post by markt on Jul 16, 2008 16:37:19 GMT
Nice pickies everyone, as i've logged on and off here throughout the day i've watched the collection grow and now i'm home i've finally got mine downloaded. A lack of alcohol last night meant they all came out without camera shake. I'll post all the decent ones here with times, but one thing I have noticed is how well elements in observers photographs correspond to those taken by others in really quite different parts of the UK. Here's mine anyway, enjoy! 21.40ut 21.41ut 21.43ut 21.43ut 21.44ut 21.46ut 21.46ut 21.47ut 21.48ut 21.50ut 21.51ut 21.53ut 21.55ut 22.02ut 22.09ut. Looking due north showing NLC behind the encroaching cloud bank. All other pics have a NW view.
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