CTA 1 (SNR G119.5+10.2)

CTA 1- Astrophotography Martin Rusterholz

CTA 1 is a super­nova rem­nant that con­sists of a 1.5 degree fil­a­ment­ary shell. The bright object near left of cen­ter is NGC 40, a small plan­et­ary neb­ula. The two objects are unre­lated and are at dif­fer­ent dis­tances. The dis­tance to CTA 1 is estim­ated about 4’600 lightyears and its age about 10’000 years.

CTA 1 stands for “CT”, the abbre­vi­ation for “Cal­tech” and the let­ter “A” denotes the first list of radio sources pub­lished by this obser­vat­ory in 1960, as this object was pre­vi­ously not catalogued.

The small object near the top left corner is Hu 2, a faint plan­et­ary neb­ula with a size of 2x1.6′, recently dis­covered by the French ama­teur astro­nomer Laurent Huet.

[descrip­tion from Sakib Rasool]


Taka­hashi FSQ-106EDX III
Andor CG16M
Astro­don Gen2
HaOIIIR­GB 1200:1290:130:130:120 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart CTA 1 (SNR G119.5+10.2)

CTA 1 Sky Chart - Astrophotography Martin Rusterholz

Image cre­ated by Skychart

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.