2015 July 23 ~ The Nebula IC1396 in Cepheus (and the Flying Bat Nebula)
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Photographed at Algonquin Provincial Park, Ontario, Canada
(275 km by road north of Toronto)
* Temperature 15 degrees C.
Total exposure time: 10 minutes.
This is a large and quite faint emission nebula and star forming region over 100 light-years across, located about 2,400 light-years away in the constellation Cepheus. It is energized by the bright, bluish central multiple star. The very small Elephant’s Trunk nebula (IC 1396A) is inside the dark elongated globule just to the lower left of the centre of the bright gas cloud.
From one web site: "The brightest star (38,000 times brighter than the Sun) ... [at the lower left edge of the nebula] is mu Cephei. It is a red supergiant star with a diameter larger than the orbit of Saturn, some 2536 times the diameter of the Sun. It is one of the largest stars we know of. Also called Herschel’s Garnet Star, mu Cephei is a variable star that varies in magnitude from 3.4 to 5.1 over a period of approximately 730 days."
At the upper left edge of the frame is part of a large, faint reddish nebula called the "Flying Bat" (also known as Sh2-129).
Near the left edge is the bright star Alpha Cephei (also known as Alderamin), which is the brightest star in the constellation Cepheus. It has 2.3 times the diameter of our own Sun, and is 17 times as bright.
For a closer in view made with a 400 mm lens three weeks later, click here:
www.flickr.com/photos/97587627@N06/19929294304/
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Nikkor AF-S 70 - 200 mm f/2.8G ED VR lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Ten stacked frames; each frame:
200 mm focal length; ISO 3200; 60 seconds exposure at f/4.5
(with LENR - long exposure noise reduction)
Stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance, sharpening, colour desaturation)
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2015 July 23 ~ The Nebula IC1396 in Cepheus (and the Flying Bat Nebula)
******************************************************************************
Photographed at Algonquin Provincial Park, Ontario, Canada
(275 km by road north of Toronto)
* Temperature 15 degrees C.
Total exposure time: 10 minutes.
This is a large and quite faint emission nebula and star forming region over 100 light-years across, located about 2,400 light-years away in the constellation Cepheus. It is energized by the bright, bluish central multiple star. The very small Elephant’s Trunk nebula (IC 1396A) is inside the dark elongated globule just to the lower left of the centre of the bright gas cloud.
From one web site: "The brightest star (38,000 times brighter than the Sun) ... [at the lower left edge of the nebula] is mu Cephei. It is a red supergiant star with a diameter larger than the orbit of Saturn, some 2536 times the diameter of the Sun. It is one of the largest stars we know of. Also called Herschel’s Garnet Star, mu Cephei is a variable star that varies in magnitude from 3.4 to 5.1 over a period of approximately 730 days."
At the upper left edge of the frame is part of a large, faint reddish nebula called the "Flying Bat" (also known as Sh2-129).
Near the left edge is the bright star Alpha Cephei (also known as Alderamin), which is the brightest star in the constellation Cepheus. It has 2.3 times the diameter of our own Sun, and is 17 times as bright.
For a closer in view made with a 400 mm lens three weeks later, click here:
www.flickr.com/photos/97587627@N06/19929294304/
__________________________________________
Nikkor AF-S 70 - 200 mm f/2.8G ED VR lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Ten stacked frames; each frame:
200 mm focal length; ISO 3200; 60 seconds exposure at f/4.5
(with LENR - long exposure noise reduction)
Stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance, sharpening, colour desaturation)
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