PDA

View Full Version : Lunar Halo


Mystical Potato Head
08-Feb-09, 23:32
A couple from earlier tonight.

http://i374.photobucket.com/albums/oo189/sat5_photos/IMG_0146.jpg

http://i374.photobucket.com/albums/oo189/sat5_photos/IMG_0152.jpg
astroman
09-Feb-09, 01:33
Well captured MPH.
I haven't had the chance to take many photos recently, but felt the need to take a quick snap of the halo tonight myself...
http://i271.photobucket.com/albums/jj138/astroman_caithness/Feb8thMoonHalo.jpg
wifie
09-Feb-09, 12:20
Nice pics guys! What does a halo round the moon mean, if anything? My folks tell me a ring around the moon means snow.
MPH I would have like a bit more of the church showing in no2. :)
tjc
09-Feb-09, 14:00
Great shots both...

I noticed the moon/halo last night too, was stunning.

Well captured. ;)
Mystical Potato Head
09-Feb-09, 17:55
Nice pics guys! What does a halo round the moon mean, if anything? My folks tell me a ring around the moon means snow.
MPH I would have like a bit more of the church showing in no2. :)

http://i374.photobucket.com/albums/oo189/sat5_photos/IMG_0150.jpg

A halo is caused by light refracted by ice particles in thin high level cloud like cirrus clouds.
The light is refracted through 6 sided ice crystals which bend the light twice to form a halo of 22 degrees,or so my astronomy book tells me.:lol:

Nice shot Astroman..You have a nice wider view than mine,i've barely got all of it.Oh dear,does that mean its time for 10-20mm lens.
North Light
09-Feb-09, 18:49
MPH,

Fascinating images.
wifie
09-Feb-09, 23:33
Thank you MPH - looks cool wi the snow on the roof!
astroman
09-Feb-09, 23:34
For anyone interested in learning a bit more about halos and other atmospheric optics have a look here....
http://www.atoptics.co.uk/halo/common.htm and
http://www.atoptics.co.uk/halo/circmoon.htm

MPH,
I've previously tried photographing a halo with my digital compact, but with it being 38mm equivalent at its widest I had to take 4 images and stitch them together.
It was much easier with my DSLR - I used an Olympus 14-42mm kit zoom, which works out at 28mm equivalent with the x2 factor for my DSLR. I'm delighted it fitted easily :D.