I'll try and keep it short instead of my usual ramblings. Sunday (yesterday) I spent the better part of the afternoon swapping the summer tires/rims for the winter ones. All 8 tires are on rims, so it's just a matter of getting my sorry carcass out to do it. 40 wheel nuts later and it was done.
It was also the first day of DST. I won't even start. So, at 3PM instead of 4 I noticed the Sun getting near the trees in the west, in a nice blue sky. Dang it! I grabbed my C80-HD, Baader solar film, Canon EOS 550 at ISO 100 and 1/200th sec exp., and took 25 shots before the trees interfered.
This is a small scale image of Sunday's sol, complete with "labels" and the planets to scale. The full size image is sans annotations
Full size image here
As I was looking at AR2893 in the full size image, I noticed a streak of white coming through the umbra (the dark core of the spot) from the top left. As far as I know, that's a light-bridge. So what is that?
According to the Hinode spacecraft website,
There's more info at the link.Light-bridges are lanes of bright material that divide the umbra in a sunspot. They are often observed during the break-up of sunspots and therefore can represent the re-establishment of convection which is normally inhibited by the sunspot's strong magnetic field.
I also took some shots on Saturday the 6th though the skies weren't the best, and in going back to them, it looked like that same light-bridge may be just starting. The pics were takes about 24 hours apart, and I blew them up to 150% for a better view.
This is Saturday the 6th:
- lb6th.jpg (35.57 KiB) Viewed 2424 times
And Sunday the 7th. I could be wrong about this (and probably am) but it's fun to speculate
- lb7th.jpg (39.23 KiB) Viewed 2424 times
And this the same sunspot with the earth to scale. And that's not even a big spot...
- lbearth.jpg (39.25 KiB) Viewed 2424 times
Anyways, must eat; my stomach and I still think it's 6ish and it's really after 7ish... Yup, don't get me started
Have a good day/night, all!
