Astrophotography by Anthony Ayiomamitis

Solar Image Gallery - Scenic Phenomenon

When the immediate environment is characterized with cool temperatures and wispy clouds, the sun will often display the effect commonly referred to as a "solar halo". Moisture within the wispy clouds will crystallize under these cold temperatures and, when combined with solar light, we have refractions within the hexagonal crystals which lead to the effect depicted by a solar halo. Furthermore, as is the case with rainbows, the angle between the incident ray of solar light entering the ice crystal(s) and that redirected back to the observer (resultant ray) is known and, in the case of the solar halo, measures 22; thus the size of the solar halo depicted below is approximately 44 is diameter. Given the large amount of sky these circles (or halos) cover, they are often missed when looking at the overhead sun.


Image Details
Solar Halo Over Athens
Imaging Details
Body:
Sun

Mass:
332,900 x Earth

Mean Eq Diameter:
109.1 x Earth

Distance:
151.3 million km

RA / Dec:
03h 40m 48s /
19 35' 34"


Diameter:
31.62

Magnitude:
-26.8

Light Time:
0h 8m 27.3s
Date:
May 18, 2014
15:00:10 UT+3


Location:
Athens, Greece

Equipment:
Canon EOS 350D
Peleng 8mm / f3.5 @ f22


Exposure:
1 / 400 sec
ISO 100
RAW Image Format
3456x2304 Image Size
Manual Mode


Software:
Digital Photo Pro V2.1.1.4
Photoshop CS2


Processing:
Resampling
JPG Compression