Observing Log for 2005-11-16

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Location: Billingborough (South Lincolnshire, UK)
From: 2005-11-16 13:33 UT
To: 2005-11-16 13:46 UT
Equipment: Naked Eye
Temperature: 5.9C
Humidity: 68%

Like yesterday the sky was reasonably clear with cloud about. Decided to have another quick look at the Sun with the naked eye and with the Solarscope to see how sunspot 822 had developed.

Sunspot 822 with naked eye

Time: 2005-11-16 13:33 UT

Unlike yesterday, sunspot 822 was immediately visible — no effort was required to find it. It was a very clear, dark spot.

Sunspot 822 with Solarscope

From: 2005-11-16 13:40 UT
To: 2005-11-16 13:46 UT

Set up the Solarscope for a better look at 822. Some changes were obvious when compared to yesterday's observation. While the biggest pair of spots still appeared to be more or less the same (and also had a striking resemblance to a Mandelbrot set) the smaller spots that were visible between them and the smaller pair appear to have grown in number. However, the whole group appeared more spread out now due to their being less foreshortening now that the rotation of the Sun had carried them further away from the limb; it could be the case that there weren't more small spots, it could be that they were just easier for me to see.

Did the following sketch:

Sketch of Sunspot 822

Page last modified: 2013-04-09 09:19:19 UT
Dave Pearson <davep@davep.org>
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