davidgillon: A pair of crutches, hanging from coat hooks, reflected in a mirror (Default)

 We've had so much going on with my mother that I was completely unaware the eclipse was imminent until Sunday afternoon - far too late to order eclipse viewing glasses.

So I spent part of this afternoon knocking up a pinhole projector from a couple of sheets of cardboard (courtesy of last night's pizza). I also tried to produce a boxed one (box liberated from the last few cans of beer at its bottom), but with less success.

It's been our hottest day of the year (32C), but was starting to cool to more reasonable temperatures as my sister and I settled down in her garden, which is handily west-facing. And just as it ticked around to 18:05, scheduled start of the eclipse here in Durham, the sun disappeared behind a cloud.

*headdesk*

Fortunately it reappeared after about 10 minutes and settled into a pattern of alternating about ten minutes obscured, and 10 minutes in the clear. It was annoying not to be able to look at it directly, but the pinhole projector worked rather well, and I even got the box one working, though using it required holding either your head or one or both arms at awkward angles.

It was a very pleasant couple of hours, though less reaction from the local birdlife than I expected - we had a large number of gulls milling about about a quarter of an hour in, but no roosting - and we would have known if that was happening as we have a couple of hundred starlings habitually roosting in the tree two doors up, and about fifty in the tree two doors down.

Once we'd gotten to maximum, I settled back just to enjoy the light and not concentrate so much on the solar disk, and after a few minutes started reading on my phone about what other people were seeing across Europe, then about twenty minutes past maximum I glanced up, and had to look again and call for my sister to look, because there was a segment of vertical rainbow peaking through the clouds. It was only a small segment*, but I'm pretty sure I was looking at enough to have seen the arc if it had been a conventional rainbow.

So Eclipse Plus - two optical phenomena at the same time!

And it was a good job I looked up when I did, because it only lasted a couple of minutes.

* About the size of the first joint of my thumb at arms length, about 15 degrees behind the sun's position in the sky, and aligned with red towards the sun, violet away - the red was very intense, the blue-indigo-violet very pale.

Eclipsed

Jun. 10th, 2021 12:21 pm
davidgillon: A pair of crutches, hanging from coat hooks, reflected in a mirror (Default)

So my attempts to view today's partial annular solar eclipse in the UK were less than successful.

I did manage to wake up in time, despite not managing to get any sleep before 7AM, but then spent the better part of an hour searching for my proper eclipse viewing filter bought for the near total eclipse back in 1999. I found the booklet it came in/with, but not the filter itself. So I then quickly threw together a pin-hole camera with remote viewing screen (aka the box from a dozen cans of cider and a sheet of printer paper). By that point I'd missed the peak by about 5 minutes, and by the time I got outside and tried it all that I could see was a small arc clipped off the lower right quadrant (flipped by the pinhole, so actually upper left). I decided the pinhole was a bit big for clear viewing - it was more of a pin-slot - popped inside to get some tape to cut it down to size, but in the time it took to do that the sun disappeared behind clouds and there wasn't enough light getting through to form an image. And it's still behind clouds an hour later.

Bah.

Apparently maximum coverage in London*, and I'm close enough to make no difference, was 20%, and I didn't notice any significant change in light levels, certainly nothing like the eerie false twilight of a total eclipse.

 

* Rising to about 30% further North.

Eclipsed

Mar. 20th, 2015 09:37 am
davidgillon: A pair of crutches, hanging from coat hooks, reflected in a mirror (Default)
Bah, the only thing total about the eclipse was the cloud coverage here in the South East!

Lighting changes were pretty subtle, in fact the most obvious effect was a distinct uptick in birdsong, which I remember from the 1999 total eclipse.

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davidgillon: A pair of crutches, hanging from coat hooks, reflected in a mirror (Default)
David Gillon

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