Rising of Orion Constellation and Sirius

From the photographer: “In ancient Greece, people used to call the hottest days of July and August ”kynades meres” (aka dog days). That’s because Sirius, the brightest star of the constellation Canis Major, rises during the pre-dawn in the sun’s path. Sirius used to be Orion’s dog. So, during these times, the dog’s hot breath was believed to be the source of the scorching heat and droughts of midsummer. In this image you can see the Orion constellation and the Sirius (just beneath it) rising during dawn. Move the slider on the image to hide/show labels and constellation lines.”

Technical Details: Exposure blend of the same exact frame, where in the one image I had applied a diffuser filter in order to make the constellation more obvious. Captured using a Nikon D750 and a Nikkor 20mm f1.8G lens.