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Contains:  NGC 7023, The star 7Cep, The star 73Dra, The star 6Cep, The star 16Cep, The star 9Cep, The star 11Cep, The star θCep, The star ηCep, The star Alfirk (βCep), The star Alderamin (αCep), Part of the constellation Cepheus (Cep)
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Technical card

Resolution: 2588x1674

Dates:May 5, 2019

Frames: 172x60" ISO800 bin 1x1

Integration: 2.9 hours

Darks: ~50

Flats: ~50

Bias: ~256

Avg. Moon age: 0.54 days

Avg. Moon phase: 0.32% job: 2688062

RA center: 314.930 degrees

DEC center: 68.588 degrees

Pixel scale: 20.747 arcsec/pixel

Orientation: 90.895 degrees

Field radius: 8.882 degrees

Data source: Traveller


The constellation of Cepheus is literally bathed in Milky Way dust structures. Near the center of the frame is the popular Iris Nebula. I admit that it is barely recognizable when you step back this far. The bright blue stars are some of the main visual stars of Cepheus.

I was finally able to get out from underneath a light dome and shoot some wide and fast exposures in sky measuring 21.7 SQM. The astrophotography, well, was definitely like nothing like I am used to! I've never even travelled with any of my equipment before. It was a whole new experience, mostly plagued by rookie mistakes. I also had to tend to a dew problem that actually led to a nice diffusion effect on the bright stars. I decided to leave those frames in the stack because I rather liked the wash-of-color appearance.

But, the simplest rig I could muster gave the best result. This includes a Canon 6D with a Rokinon 135mm at f/2 on a Celestron AVX mount. It was shot with an intervalometer cable release and centered using the mount's hand controller.

+1 for simplifying your life.



Jason Guenzel

Sky plot

Sky plot


NGC7023 - The Dust in Cepheus, 


            Jason Guenzel

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