NGC 6000 - The North America Nebula
NGC 6000 – The "North America Nebula"
This Image came as a bit of a surprise. It was taken on 06/09/2013 which is just into the period of the "white nights" during which the sun does not set far enough below the horizon to provide us with a really dark night. During this time of the year, there are only about two and a half hours time to take pictures at all. This particular image is composed of only 90 minutes of exposure time and I frankly did not expect such a good result.
What is special about this Image is, that I used a H-alpha filter for the first time. This filter lets only pass a certain, narrow part of the specrum of the visible light. That is why such filters are called narrowband-filters. In this case the wavelenght of the light that passes is that of the ionised hydrogen. The idea is to later combine these images with the usual full colored images to increase sharpness and contrast in the resulting picture. The weather did not allow me to take a fitting full color image, yet, but I thought I show you the monochrome result that - in my oppinion - provides its own attraction.
The North America Nebula is a quite widespread region of hydrogen gas in the Cygnus area that indeed is pretty reminiscent of the outline of the North American continent. Because of the rather long focus of my optics, you can only see a part of it. This is - if you like - Mexico and the dark region to thwe top right is the Gulf of Mexico. The United States would, in this orientation - lie to the left of this image.
|Exposure:||9 x 600s, ISO800|
|Camera:||Canon EOS 1100D (Canon Rebel T3), modified + 2'' Astronomik Ha-Filter (6nm)|
|Teleskope:||10" GSO RC, 1340mm (Astro Physics CCDT67 Reducer)|
|Guiding:||OAG with Lodestar und PHD|
|EBV:||Fitswork and Serif PhotoPlus X6|