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Photographed at Algonquin Provincial Park, Ontario, Canada(275 km by road north of Toronto)* Temperature 13 degrees C.
Total exposure time: 5 minutes.
The constellation Cygnus (the Swan) - also known as the Northern Cross - passes directly overhead in the northern hemisphere summer (June - September). Our Milky Way galaxy runs directly through this constellation.
Glowing red hydrogen clouds - the colour of which which cannot be seen by the unaided human eye - dominate this region of the sky. The red sensitive digital camera sensor reveals this colour in all of its glory.
Compare this with a similar photograph from July 23, two weeks earlier:
www.flickr.com/photos/97587627@N06/19419738193/___________________________________________
Sigma 50 mm f/1.4 DG HSM ART lens on Nikon D810a camera body, mounted on Sky-Watcher Star Adventurer tracking mount with a Kirk Enterprises ball head
I am practising using this small tracking mount to get ready for Helen's and my three-week trip to Australia starting September 3, when I hope to have several nights under the southern stars in the Australian Outback. Here is a photo of the mount:www.flickr.com/photos/97587627@N06/20441137015/Five stacked frames; each frame:50 mm focal length
ISO 4000; 1 minute exposure at f/4.5
(with LENR - long exposure noise reduction)
Stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, sharpening, colour balance)
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