The Blue Sirius

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In this picture captured from the walls of Monsaraz Castle, we can see the entire Canis Major constellation, the star cluster M41, and the brightest star in the celestial sphere, with -1.46 mag. In this image Sirius is shown with unusual strong sparkles, not only produced by a photo star filter attached in the front lens of the camera, but also due to the strong dew which increase the diffusion and saturation effect, showing so, the true blue color of this star, for being at a hot temperature of 25,200K.

Canon 60Da – ISO3200 35mm f/2.8 Exp.13s in 22/12/2012 at 04h18 AM


Below you will find a resume with all publications – printed and online – related to this particular photograph.


Please refer the i-frame above, generated automatically from the overview page Press.

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