NGC 891 in Andromeda

NGC 891 Galaxy Astrophotography Martin Rusterholz

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NGC 891 (Cald­well 23) is a nearly edge on galaxy in the con­stel­la­tion of Andromeda. It was dis­covered by Car­oline Her­schel 1784 and lies about 31 mil­lion lightyears from Earth. Hubble noted that NGC 891’s dustlane has an intric­ate pat­tern run­ning per­pen­dic­u­lar to the galaxy’s mid­plane. These fin­gers can be seen in sil­hou­ette against the galaxy’s bright­est parts.

This image is ded­ic­ated to Alain Cagossi, our land­lord at ROSA, who passed away in Octo­ber 2025.

[descrip­tion from O’Meara]

Details

Tele­scope:
RCOS 14.5″ f/​8
Mount:
ASA DDM85
Cam­era:
Andor U16M
Fil­ters:
Astro­don Gen2
Expos­ure:
LRGB 1020:460:440:480 min.
Loc­a­tion:
ROSA Remote Obser­vat­or­ies South­ern Alps
Author:
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart NGC 891 in Andromeda 

NGC 891 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.

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