Elephant’s Trunk Nebula (IC1396)


It often happens that a photo of a deep space object does not suggest the common name of the object. That is because the name almost always comes from the object’s appearance to a visual observer. The Elephant’s Trunk (the dark path on the right side of the image) is outlined in a bright region that is about all you can see in most telescopes. Because this is a narrowband image showing hydrogen in red and oxygen in blue-green (if there were any oxygen), the appearance is quite different.

The entire region is much larger than what is shown here. It is about 3,000 light years from Earth, in the constellation Cepheus. 

Scope: AT111EDT at f/5.6
Mount: AP Mach1
Camera: QSI683
Exposure: H-a/OIII/SII, 9 hrs total


About Greg Marshall

I am a retired electronics engineer and after a few months of enjoying my leisure I began to miss doing product development. My astronomy hobby always needed new solutions to unique problems, so I decided that whenever I came up with a good solution I would try to make it available to others.

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