Night 2017 - IMG_7761
Morning on Lake Ballard, in what is called astronomical twilight (the time before nautical and civilian twilight prior to dawn). To the eye it the horizon is still dark, but to the camera under long exposure the sky is starting to brightening with the approaching sunrise. Looking to the south, the dark Coal Sack nebula and the stars Hadar and Rigil Kentaurus (aka Alpha and Beta Centauri) rise from above the clouds, with the Southern Cross and Carina Nebula at the top of the image.
This was more of an opportunity shot rather than planned. Whilst I should've used a wider angle lens (due to the moving clouds), i thought maybe I could get away with a mosaic with a 50mm as the clouds were far away and slower moving. In the end, however, I had to abandon a whole column on the left as the clouds moved sufficiently enough that the stitching program "tore" the image. What remains is a 2 x 4 panel image.
This was a 3 x 4 panel mosaic through a 50mm lens, but I had to cull the left column of 4 images due to poor stitching. A tracking mount was used for the sky and turned off for the foreground. All camera and lens settings were kept the same for all panels. Stitching in PTGui, colour calibration, levels, saturation and contrast in Photoshop.
| 2017-12-26 | Lake Ballard, Western Australia | EOS6D modified | 50mm | f/3.2 | UV/IR cut-filter | iOptron mount | ISO3200 | 30sec | 8 x panels |