Re: [APML] Images of Noctilucent Clouds

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

Arne, thanks for the link - I will keep it and start practicing spotting them. I am at about 44
degrees North so I'm outside the optimal band for seeing them. Pays to watch though!

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 2:58 PM
Subject: Re: [APML] Images of Noctilucent Clouds


> 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
> > >
> > >
> > > _______________________________________________
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> > > http://seds.org/mailman/listinfo/astro-photo
> > >
> >
> >
> >
>
>
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