North America Nebula at 200mm with DSLR and Astrotrac

north america nebula dslr astrotrac

Introduction

The North America Nebula in the constellation Cygnus is probably one of the most popular widefield subjects of the northern hemisphere. This beautiful field of view contains a very large emission nebula for which it’s shape resembles that of the continent of North America.

Photographing the North America Nebula with unmodified Nikon D7000

I was very curious to see how much h-alpha my unmodified Nikon D7000 would capture when photographing this emission nebula. I shot this image on a dark location in Germany (Hohen Woos) during an astrotrip. I used the Astrotrac as mount and the Nikkor 80-200mm F2.8 @ 200mm F4. You can clearly see this lens has some problems used at 200mm. Not sure if this is astigmatism or coma, but more on that in a later post.
I was very pleased with the end result, especially how much h-alpha the unmodified Nikon D7000 was able to capture.

Here is a crop of the part that is called ‘the wall’;
the wall

Details
Date: 16/04/13
Location: Hohen Woos – Germany
Optics: Nikkor 80-200mm F2.8 used on 200mm F4
Mount: Astrotrac
Camera: Unmodified Nikon D7000 used at ISO1600
Guiding: none
Exposure: 16 x 240 sec.

Processing
Processed in PixInsight
No darks, no flats, no bias

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