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North America Nebula
(2013-09-04 22:40)


About this Object

The North America Nebula (NGC 7000) is an emission nebula in the constellation Cygnus, close to the tail of the swan and its brightest star, Deneb. The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico. The North America Nebula is large, covering an area of more than four times the size of the full moon; but its surface brightness is low, so normally it cannot be seen with the unaided eye. Binoculars and telescopes with large fields of view (approximately 3 degrees) will show it as a foggy patch of light under sufficiently dark skies. Its prominent shape and especially its reddish color (from the hydrogen Ha emission line) show up only in photographs of the area.

About this Image

This is my first image with my .86 reducer. I wanted to attempt a wider field, dimmer object. I was not able to see the object at all through an eyepiece in my light-polluted backyard. I was able to center fairly accurately by comparing to a star chart of the region, and I was able to see some of the brighter areas when I took a single long exposure. Even with that test exposure, I was able to see how well (or how badly) that I had centered the nebula in the frame. Most of the detail that can be seen in this image was visible only after stacking and processing.


--- Date/Time ---
Local: 2013-09-04 22:40:00
UTC: 2013-09-05 02:40:00

--- Location ---
The Ashton Observatory at Johnson Farms, Ashton MD
(Latitude N39.15°, Longitude W77.01°, Elevation 510')

--- Conditions ---
Temperature: 69° Dew Point: 72° Humidity: 66% Wind: 3mph Marginal seeing

--- Optics ---
Televue NP101is 101mm f/5.35 Refractor with Televue 0.8x Reducer

--- Camera ---
Canon EOS 60Da

--- Exposure ---
Qty 79 45-second ISO 1600

--- Post-Processing ---
DeepSkyStacker, PhotoShop



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