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Sun Spots
Hi IIS:
I've got a new filter holder, I made myself. And now it's safer and I can focus with both hands, the solar image.
I was wondering, even though the shutter speed is 1/4000 sec, that since it's at the ecliptic and it's magnified, if that's what is causing the spots to look blurry of if it's mostly a focusing problem.
On that subject I remember a book called: the FX system of exposure determination, where they give an equation that expresses the length of time in seconds at an object of declination using a certain focal length lens will make a trail of so many mm on the film/sensor. That could be useful too.
Happy Holiday Seasons.
David
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