Observing Log for 2005-09-09

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Location: Billingborough (South Lincolnshire, UK)
From: 2005-09-09 07:57 UT
To: 2005-09-09 09:10 UT
Equipment: Solarscope
Naked Eye

Read that sunspot 798 was coming back around the limb of the Sun so decided to view it with the Solarscope.

Sunspot 798

From: 2005-09-09 07:57 UT
To: 2005-09-09 08:25 UT

Sunspot 798 stood out the moment I got the Sun projected in the Solarscope. Quite close to the limb. It appeared to be made up of one large spot with at least five smaller spots around it.

Had a couple of goes at imaging what I was seeing with the camera in my mobile phone (sadly the only instant imaging device I've got to hand at the moment) but failed miserably.

Instead, decided to try and draw a sketch of what I was seeing:

Sketch of Sunspot 798

Sunspot 798 with naked eye

Time: 2005-09-09 08:51 UT

Using a pair of eclipse shades I noticed that sunspot 798 was just about visible to the naked eye. If I'd not known where to look I probably would have missed it due to it being so close to the limb.

Another Sunspot and some images

Time: 2005-09-09 09:10 UT

While having another look with the Solarscope I noticed that not too far from 798 there was another very small spot visible. At first I thought it might simply have been some dust on the lens or the mirror. I rotated both of them to be sure and it didn't move.

Subsequently found out that the sunspot mentioned above now has a number: sunspot 809.

Also had another go at taking some images with the mobile phone. This time they didn't come out too bad. While there's no real detail to them you can at least get an impression of what 798 looks like in the Solarscope:

Image 1 of Sunspot 798

Image 2 of Sunspot 798

Image 3 of Sunspot 798

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