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Photographed at Algonquin Provincial Park, Ontario, Canada* Temperature 13 degrees C.
* Altitude of the nebula while I was photographing it: 19 degrees
This pretty double gas cloud - part reflection nebula and part emission nebula, lies just north of the Lagoon Nebula in Sagittarius
Total exposure time: 5 minutes
For a wide-angle view of this object with the nearby Lagoon Nebula, from June 20, click here:
www.flickr.com/photos/97587627@N06/18883919019/From Wikipedia:"The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. It was discovered by Charles Messier on June 5, 1764. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars; an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifurcated appearance; these are also designated Barnard 85). Viewed through a small telescope, the Trifid Nebula is a bright and peculiar object, and is thus a perennial favourite of amateur astronomers."
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Nikon D810a camera body on Explore Scientific 152 mm (6 inch) refracting telescope
Mounted on Astrophysics 1100GTO equatorial mount
Five stacked frames; each frame:ISO 4000; 1-minute exposure at f/8, unguided
(with LENR - long exposure noise reduction)
Stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, sharpening)
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