< Links >

Educational Sites
Atmospheric Optics
Ice Crystal Halos blog / (old blog)
Atmospheric Phenomena / (old blog)
Atmospheric Optics Articles - Günter Können
Halo Science - Walt Tape
Spaceweather.com
Causes of Colour - Dieter Zawischa
Optics of a Water Drop - Philip Laven

Halo Observing Networks
Finnish Halo Observing Network (FHON)
Czech Atmospheric Phenomena Network - Tomáš Tržický
German Atmospheric Phenomena Network (Arbeitskreis Meteore e.V. ) / Halo forum
Légköroptikai jelenségek - Hungarian Observer Group
Atmospheric Phenomena in Austria

Halo Bloggers
Légköroptika / Atmospheric Optics - Ágnes Kirics
ice-halo.net - Vladimir Galynsky / (old blog)
contrailscience.com
Halo Ukrainia
Submoon - Marko Riikonen
The Bolton Halo Triangle

Image pools
Sundogs, halos, sun pillars, atmospheric optics Flickr Group
Atmospheric Optics, Rare Clouds and Backyard Astronomy Flickr Group
Rainbows Flickr Group

Image Gallerys
Collection of Images About Atmospheric Phenomena From Austria
World Database of Rare Halos

Personal Image Gallerys
Aurinkoilmiöt, Halot, Kehät ja Pilkut - Kari G.Nyman
Atmospheric Phenomena Gallery - Mika Aho
Diamond Dust Display - Juha Oksa
Polar Image - Pekka Parviainen
pixheaven.net - Laurent Laveder
Sky Show by Vincent Jacques
Glows Bows and Haloes - Richard Fleet
Halos - B. Radelow
photon-echoes.com - Lauri A. Kangas
Sky and Weather Photography - Michiel de Boer
weatherscapes.com - Harald Edens
Atmospheric phenomenas site - Karl Kaiser
Atmospheric Phenomenas - Lucio Furlanetto
Extreme Instability - Mike Hollingshead
Paraselene.de - Eva Seidenfaden
Nature Images - Eero Savolainen
Halo Observations - Ismo Luukkonen
Atmospheric and Weather Photos - Emma Henrik Herranen
Halo Photos - Marko Mikkilä / flickr gallery
Atmospheric Phenomena and Sky Photography - Jari Luomanen
Somerikko- Jarmo Moilanen
Atmospheric optical phenomena - Jari Piikki
Atmospheric Galleries - Timo Kuhmonen
Atmospheric Phenomena - Claudia & Wolfgang Hinz / (Main site)
All the Sky - Till Credner and Sven Kohle
pphv - Peter Paul Hattinga Verschure
Atmospheric Phenomenas - Noli
Sky Phenomenas - Mats Mattsson
Ern Mainka Photography
Atmospheric phenomenas - Rob Kaufman
Steve's Atmospheric Phenomena
Atmospheric Ice Halos - Bob Fosbury
Weather Pictures and Storm Chasing - Bernard Hulshof
Guillaume & Jennifer Dargaud's website
Natur und Wetterfotografie - Daniel Eggert
himmelsleuchten.de - Christian Fenn
lightsearcher.de - Michael Großmann
stormchaser.ca - George Kourounis
GreekSky - Chris Kotsiopoulos
Halo Science - Walt Tape
Atmospheric Optical Phenomena - Mario Freitas

Atmospheric Optics - Darryn Schneider
halové jevy - Lukáš Shrbený

Noctilucent Clouds
Noctilucent Cloud Observer's Homepage - Tom McEwan
Clear Skies - P-M Hedén

POD
Earth Science Picture of the Day - ESPOD
Lunar Photo of the Day - LPOD
Astronomy Picture of the Day - APOD
Optics Picture of the Day - OPOD

Ice Crystals
The Bentley Collection
SnowCrystals.com - Kenneth G. Libbrecht / (Main site)

Halo Simulations
Halo Atlas (FHON)
ukazy.astro.cz (Czech Optics of the Atmosphere)
Halo-Simulations (AKM)

Software

HaloSim3
HaloPoint 2.0
TiltingSun2
HaloSky
RegiStax 6

Useful...
Sun or Moon Altitude/Azimuth Table
Directory of Cities and Towns in World (indexed geo position info)
NGA's GEOnet Names Server (searchable geo position info)