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Sunspots 756 and 757

This morning I observed and photographed two groups of sunspots, NOAA 0756 and 0757. After months I got a chance to have a look at some sunspots with the refractor. It was very hot (28 degrees Celsius); there where no clouds, and the sunspot group 0756 was large and impressive. I noticed while shooting the images that with higher magnifications and/or optical zoom the exposure times get longer, and the seeing gets more disturbing on the images. I hope that the new Herschel prism from Baader (still waiting on it) will give me more light at higher magnifications and much shorter exposure times.

The first image was shot with the Nikon Coolpix using the TAL 100RS 4-inch refractor and a Televue 32mm eyepiece with 1x optical zoom. The second, more detailed image was shot with the same telescope and camera, but with a 20mm Vixen Lanthanum eyepiece and 4x optical zoom. The big sunspot group is NOAA 756 and the smaller group to the right is NOAA 0757.

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Posted by Math on 05/01 at 11:25 AM
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