Fire­works Galaxy (NGC 6946) in Cepheus

NGC 6946, (also known as the Fire­works Galaxy, Arp 29, and Cald­well 12), is an mixed spir­al galaxy about 18 mil­lion light-years away, in the con­stel­la­tion of Ceph­eus. Its estim­ated lin­ear dia­met­er is 58’000 light-years, shin­ing at mag­nitude 8.8.

It was dis­covered by Wil­li­am Her­schel on Septem­ber 9, 1798. NGC 6946 is highly obscured by inter­stel­lar mat­ter of the Milky Way galaxy, as it is quite close to the galactic plane. Nine super­novae since 1917 have been observed in NGC 6946.

[descrip­tion from wiki­pe­dia and O’Meara]


RCOS 14.5″ f/​8
Apo­gee U16M
Astro­don Gen2
LRGB 800:280:280:220 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart Fire­works Galaxy (NGC 6946) in Cepheus

NGC 6946 Galaxy Sky Chart Astrophotography Martin Rusterholz

Image cre­ated by Skychart

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About Me

Hello, my name is Martin Rusterholz. I’m a Swiss amateur astrophotographer living near Zurich, the biggest town in Switzerland. My interest in astronomy started when I was 16. At that time, I built my first Newtonian telescope and mount. I studied physics at the Swiss Federal Institute of Technology (ETH) which was the only study including at least some aspects of astronomy and astrophysics. “Looking at the nights sky is an experience touching everybody deeply inside, something common to all human beings independent to the language spoken by the individuals”. Deep-sky astrophotography is my passion.