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Tag Archives: sun

Partial Solar Eclipse

Friday, August 1, 2008

Today's partial solar eclipse happened from 11:44 to 13:55 local time, so we combined observing the eclipse with a lunch-picnic for the whole lab. One telescope with a 25mm positive lens at the eye-piece projected an image of the sun into a cardboard box. Another was used with a tracking mount and an OD=5 solar [...]

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Sun 22.4.2008

Tuesday, April 22, 2008

I got an OD=5 solar filter for my 80 mm refractor and took a first look at the sun this afternoon. Two sunspots are clearly visible. The large spot at 3 o'clock is dirt on the camera sensor. The apparent rotation period is supposed to be around 28 days, so by taking a picture each [...]

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