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Solar System

The Sun

As part of my preparation for the transit of Venus I constructed a Baader solar film filter for the front of my Zenithstar. I followed the instructions on the Baader website and used the card from the back of A4 photograph envelopes to construct the film holder. The resultant assembly fits snugly over the front of the dew shield.

As a practice run I took 20 exposures with the Canon 350D. Focusing is tricky and I elected to acquire the images using Maxim which displays the images on the laptop screen where they can be enlarged to any size. The images were stacked in Registax and the contrast was then stretched in Photoshop.

The resultant white light images show sunspots well and several large groups are visible in this image.


Mid point of exposures: 2012-06-04T18:04:47 UTC

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