September 24, 2017

A Home-made Solar Filter for Cheap.

Solar observing is just plain cool. While some celestial objects such as the Andromeda Galaxy will look exactly the same on the day you die as when you were born, the face of the Sun can change day to day, or even minute to minute. As we are currently in the depths of a solar minimum, now is the time to construct a white-light filter and prepare for those sunspots and faculae that will start to creep across the face of our nearest star in the next few years.

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Planetary Imaging with an Off-the-Shelf Web Cam.

A few years ago, I came across an article in Sky & Telescope about an emerging technology. Apparently, some intrepid sky enthusiasts (I hate the word amateur… to me it denotes bottlecap collecting or trainspotting and other space filling activities) were creating their own planetary webcams.

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