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]

Details

Tele­scope:
Mount:
Cam­era:
Fil­ters:
Expos­ure:
Loc­a­tion:
Author:
RCOS 14.5″ f/​8
ASA DDM85
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