Re: [APML] Images of Noctilucent Clouds

["Arne Danielsen" <arnedani@online.no>]

Thank you very much, Stuart!

In the beginning it might be a bit difficult to distinguish NLC's from just
high cirrus clouds. However if you get to see a major display there is
absolutely no doubt - and afterwards (when you now what to look for ) it's
also easier to spot the weaker displays. Isn't that always the case? :-)

For some useful information on how to spot NLC's please take a look at this
FAQ:
http://www.nlcnet.co.uk/nlcfaq.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
----- Original Message ----- 
From: "Stuart Heggie" <stuart.j.heggie@sympatico.ca>
To: "Arne Danielsen" <arnedani@online.no>; "Discussion of Film
Astrophotography" <astro-photo@seds.org>
Sent: Sunday, August 08, 2004 12:16 PM
Subject: Re: [APML] Images of Noctilucent Clouds


> 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
> >
> >
> > _______________________________________________
> > Astro-Photo mailing list
> > Astro-Photo@seds.org
> > http://seds.org/mailman/listinfo/astro-photo
> >
>
>
>


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