Yearly Archives: 2010

Last weekend, I visited my parents in Normandy. I took advantage of my visit to dig through my old astronomy journals of observations and pictures. I was looking for my records of what has been my best halo display. In…

Sometimes odd radius halos come day after another. In April 1987 I observed three consecutive days of odd radius halos and in April 1996 Jarmo Moilanen had four days in a row. On both periods there was also one night…

There are not much around photos of parhelic circle that fits inside the 22° halo. Here is one, seen over La Silla astronomical observatory in Chile on 27 January 1990. Sun is at 79 degrees elevation. Damien Hutsemekers, who took…

I would like to share some thoughts about a possible new arc. This arc seems to be present on the two observations of Moilanen arc at high source elevation from Jari Luomanen ( 1 ) and Marko Mikkilä ( 2…

Changing crystal shape causes surprising behavior with Liljequist parhelion, casting doubts on its identity as a halo form. Look at the simulations above, larger image opens by clicking. I have simulated (software: HaloPoint2.0) the anthelic side of the plate parhelic…

This reflection subsun was photographed on 21 April 2006 in Salt Lake City and has been on display in the Flickr since then ( 1 ). The photographer, Heron, correctly suspected that sun’s reflection from the Great Salt Lake might…

For a change a display from Africa. This was see in Accra, Ghana, on 10 March this year. The photo was taken by Kwaku Chintoh. Sun is at 75.5 degrees elevation. The two sun concentric halos are rather 9° column…

At last they are here: good photographs of Bottlinger’s rings! Tim Stone’s images of Bottlinger’s rings over Illinois were published today in Les Cowley’s site ( 1 ). The rings lasted only for a few seconds, but luckily Stone was…

The kaleidoscope halos in a streetlight present some nomenclature problems. Please see the article Nomenclature Woes on my webpage (click the image above). I invite your suggestions for better names for the halos. Walt Tape