February 2, 2015
January ended with a blast of cold and surprisingly beautiful sundogs and a halo.
I happened to look out my window early Saturday morning while managing my email messages and noticed that sundogs were accompanying the rising sun. I didn't think much about the weather and within a few minutes, I was driving out of Winnipeg. Within 5 minutes, I made my first stop on the TransCanada Highway east of Winnipeg and soon realized that it was bitterly cold. At -30 degrees Celsius and with a good wind to boot, it was closer to -40 degrees Celsius. One could barely stay out for a few minutes at a time. I must have stayed out there longer than I should have because my daughter noticed 'splotchy skin' on my face, an indication that I had suffered mild frost bite - the price nature photographers often pay for their craft and art!
A sundog (parhelion) is an atmospheric phenomenon that consists of a pair of bright spots on either side on the sun, often co-occurring with a luminous ring known as a 22° halo. In the last two images, such a halo surrounds the sun. Sun dogs occur when plate-shaped hexagonal ice crystals from very cold weather or from high and cold cirrus clouds refract light. The crystals, which act as prisms, bend the light rays at a minimum of 22°. A halo (complete ring around the sun) occurs if the ice crystals are randomly oriented. However, if the crystals sink through the air and become vertically aligned, the sunlight is refracted horizontally, resulting in sundogs.
I made the following images with a 17-35mm lens set to its widest focal length except for the last image where I used a 24mm PC or tilt/shift lens. Both lens were fitted with a polarizing filter to increase the contrast and saturate the colors. All images, except for the first one, were made near Lorette, Manitoba.
It's the middle of March and Winnipeg is again under blizzard conditions! I figured then that it was appropriate to post another ... well ... winter image!
While researching images for a recent calendar submission, I came across this image of a magnificent sun halo accompanied by prominent sundogs. I hadn't seen this image for a few years and decided to 'bring it back'! While all the details were fully captured in the original transparency, the image was rather light in tone and the contrast was fairly low. I scanned the slide and reduced the exposure to bring out the details in the original image.
According to Tim Herd, expert Meteorologist and Naturalist, "halos are created in illuminated ice crystal clouds or a sky filled with falling ice crystals". This 22 degree halo around the sun is one of the most commonly observed. On either side of the sun - sitting on the halo - are the sundogs, also known as parhelia. At the top of the halo, I do beleive we are seeing a circumzenithal arc!
Tim Herd's wonderful book 'Kaleidoscope Sky' (ISBN-10: 081099397X) contains a wealth of information about all kinds of celestical phenomena. 'Kaleidoscope Sky' is my 'go-to Bible' for everything about the sky.
This is one of my favorite images of the Royal Canadian Mint!
After photographing the sun halo featured in the previous post, I envisioned the possibility of capturing the same halo above Pisew Falls, another 15 minutes or so ahead. But as the sky was fairly clouded over, I had my doubts whether in fact it could happen but I decided to give it a try anyay. I had been here the day before and spent a wonderful few hours in the late afternoon making images of the falls and the snow laden trees.
Lo and behold, the clouds did clear somewhat as I approached the falls. I mounted my 17-35mm lens, set at its widest, to capture as much of the scene as possible. I waited for the fog rising above the falls to thin out while at the same time waiting for the clouds to lighten up so the sun halo would stand out against the background sky. This was one of my favorite images of the morning. How many wonderful hours of peace, quiet and solitude I have spent here ....
The forecast was for sunny skies but .... you know how that usually turns out! Driving along the highway south of Thompson on a very cold morning of my last day of the trip, I kept an eye on this 'sun halo' that appeared at first very faint but eventually intensified. I finally stopped at a location with a promising foreground. After ensuring that it was safe to exit the vehicle, I mounted my wide angle PC (perspective control) lens onto the camera in order to keep the trees 'straight' and not 'leaning back' as I aimed the lens high to capture mostly sky. It appears somewhat as if spokes are coming through the 'circle of light'.