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Post by Martin Mc kenna on Jun 2, 2006 12:43:57 GMT
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Post by Martin Mc kenna on Jun 2, 2006 15:15:07 GMT
John it looks like our instincts were correct about last night! If you compare images 2, 3 and 4 you can see the NLC's get more complex, brighten and grow slightly higher in altitude all within a very short period of time! Everyone keep on the look out for more tonight
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Post by Aaron on Jun 2, 2006 16:26:17 GMT
Great capture guys. Heres an article of interest, "A Nasa satellite mission will be launched this year to study the highest and most mysterious clouds on Earth. Noctilucent, or "night-shining", clouds appear as thin bands in twilight skies, some 80km (50miles) above the surface." news.bbc.co.uk/1/hi/sci/tech/5021778.stm
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Post by Conor on Jun 2, 2006 17:42:32 GMT
Nice images! I notice the NLC are very green.
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Post by paulevans on Jun 2, 2006 17:57:17 GMT
Nice! Tonight looks good too, although I guess the Moon is becoming more of a problem!
Paul.
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Post by johnmc on Jun 2, 2006 19:06:13 GMT
Thanks Martin for the vote of confidence, guess I didn't wait up long enough, great capture, and yes I can see some structure developing and altitude. Tonight might produce more, hopefully. Is ISO 200 the highest you can go? try a couple a bit higher if you can say, ISO 400.
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Post by johnmc on Jun 2, 2006 19:10:45 GMT
Interesting article Aaron, thanks for sharing that
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Post by Martin Mc kenna on Jun 2, 2006 19:36:28 GMT
Cheers everyone. Yes they were very green visually...more so than white. Thanks Paul however the moon shouldnt be much of a problem except for the fainter displays but the moon light reflecting of the many cirrus type clouds here at the moment may produce some suprious sightings tonight. John i can go to ISO1600, i braketed my shots with a range of ISO's and found 200 better captured the display without over exposing the background however maybe i should have used ISO400 with a shorter exposure? Adviced needed...i am having trouble getting a good focus on the NLC's when i zoom into more interesting sections. I use mannual mode however i cannot see the NLCs on the LCD screen and have to waste time messing around via trial and error, i take it if i can get a sharp focus on Capella then i should be grand..any tips? There was sightings last night from England, Germany and Sweden..the season has really kicked of Thanks Aaron for that very interesting article
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Post by paulevans on Jun 2, 2006 20:42:39 GMT
Martin,
It depends on exactly how your camera works, but one approach that might be worth trying is to use the autofocus to focus on the Moon, then switch to manual focus and recompose. You'll need to set the zoom first as most zoom lenses these days seem to shift focus with zooming - it wasn't always the way!
HTH,
Paul.
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Post by Martin Mc kenna on Jun 2, 2006 20:47:06 GMT
Thanks for the advice Paul, i will give that a go. What a beautiful clear sky we have here now!
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Post by paulevans on Jun 2, 2006 21:17:26 GMT
Here too. Jupiter was visible just before 2200. Some great cirrus earlier. I haven't even got the camera out yet!
Check your local co-ordinates, but I've got a -6 Iridium at 2300 and a -7 at 2330 here!
P.
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Post by Martin Mc kenna on Jun 2, 2006 21:22:06 GMT
Thanks for the heads up on the Iridium flare Paul, beautiful belt of Venus and earthshadow here extrending from the NE all the way to the south. Good luck with the flares.
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Post by Veronica on Jun 6, 2006 10:20:51 GMT
Niiiice! I had a look out towards north on Saturday night at about midnight. Lovely twilit sky, gold towards the horizon and more greener above, fading into the twilit darker sky. I have a couple of pics, but I don't think there's any NLC....
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