Re: [APML] Images of Noctilucent Clouds

["Stuart Heggie" <stuart.j.heggie@sympatico.ca>]

Arne, those are nicely composed and exposed - the choice of lens was a good one!

I have always wondered if I'm really seeing NLC's or just C's when I spot an interesting
cloudscape. How does one know for sure when looking up that they are NLC's? What are the key
identifiers? Thanks!

Beauty in things exists in the mind that contemplates them.

Stuart
http://www3.sympatico.ca/stuart.j.heggie/Stuart.J.Heggie/
Flesherton, Ontario, Canada

----- Original Message -----
From: "Arne Danielsen" <arnedani@online.no>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Sunday, August 08, 2004 4:38 AM
Subject: [APML] Images of Noctilucent Clouds


> Dear all,
>
>
>
> I'm more or less shooting digital for all my astrophotos these days, but
> finally I have some on-topic images to share - assuming pictures of
> high-level clouds can be considered as astrophoto. J
>
>
>
> During summer the skies are much too bright to do any regular nighttime
> astrophoto from the high latitudes of Norway. There is however another
> interesting phenomenon that can be witnessed each summer from our part of
> the world. I'm thinking of Noctilucent Clouds (NLC).  These are high
> atmosphere cloud formations thought to be composed of small ice-coated
> particles which form at very high altitudes - around 82 km above sea level.
> Those interested can read more about the phenomenon at:
> http://www.nlcnet.co.uk/
>
>
>
> I've seen displays of NLC's 6 or 7 nights this summer, whereas 3-4 displays
> have been very bright and impressive. On the night between July 14.-15. we
> had one of those impressive displays. The clouds covered all of the Northern
> sky - from 270 degrees West to 120 degrees South-East and from the horizon
> all the way through zenith.  None of my digital configuration can capture
> such a large field so I had to dig out my good old Olympus OM-1N and 16mm
> f/3,5 semi-fishey lens. You can see the results through this link:
>
> http://astrophile.net/astronomy/astrophoto/nlc/nlc.htm
>
>
>
> Best regards,
> Arne
> --
> Arne Danielsen
> Langhussenter 15, 1405 Langhus, Norway
> mailto:arne@astrophile.net
> http://astrophile.net/
> N59°45'14"  E10°50'38" A115m
>
>
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>

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