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Subscribe to this list via RSS Blog posts tagged in Sun

Posted by on in The Sky

Continuing our theme of interesting things in the sky it would seem that these crisp autumn days are just perfect for observing shimmers of colour on the clouds in the sky. It is also nice to be able to share these with friends and family who have never seen them before.

While taking a well-earned tea break this weekend my parents and I spotted a rather nice pair of sundogs. We admired them for a few moments when I suggested that the cloud conditions looked to be just right for a circumzenithal arc. We all turned our gaze upwards and right on cue… a faint curve like an upside- down rainbow grinned down at us. As CZAs are formed from the same ice crystals that sundogs are made from it is always worth taking a glance upwards to see if there is one smiling down.

The following day we saw a rather nice iridescent cloud, which we managed to photograph for the first time. In addition to the cloud being fairly thin, the water droplets in the cloud have to be the same size in order for the diffraction effect to be seen. We have observed iridescence several times from WV, although it is apparently uncommon.   It is amazing what you see if you just take the time to look up once in a while.

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Posted by on in The Sky










Just when we thought things couldn’t get any better this week, Nettie managed to spot, what at first sight looked like a fairly regular solar halo. Although such things are surprisingly common (if you spend any amount of time sky watching), it soon turned out to be what is possibly a once in a lifetime experience.

What we ended up observing was a combination of optical phenomena, which for our location have a probability of being seen individually, ranging from about once a year to one hundred times a year.

Put them all together however and well, probability was never my strongpoint, but I think maybe tonight is a good night to get that lottery ticket.

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Posted by on in Astronomy

Below is a short video taken of the Partial Eclipse of March 2015, shot from Woodlands View. The video is composed from stills taken with a digital SLR, through a 200mm lens and solar observing film.


We have also updated the 'Eclipse' section of the sun page with a still image taken at around the maximum coverage. Link here.


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