Welcome to the Astro-Kooperation!
The “Astro-Kooperation” was formed back in 2003 by Stefan Heutz and Wolfgang Ries as collaboration in our common interest astrophotography. Michael Breite later joined in and today we form an alliance of three amateur astrophotographers sharing the fascination for the wonders of the universe.
On this website we are pleased to present some of our images of the most beautiful objects in the heavens.
Scroll down for our recent images!
NGC 6946 is an almost perfect face-on spiral galaxy located in the constellation Cepheus. A large telescope reveals manifold detail. While the center and the inner arms are traversed by remarkable dust lanes, the star forming regions in the outer rims of the spiral arms stand out in prominent deep red.
Make sure to also look at our deep image which highlights the dim tails of the spiral arms.
NGC 6939 is an open cluster in the constellation Cepheus. Despite its large dimensions (appr. 10×10 arcmin.) it is often overseen due to its close vicinity to the famous spiral galaxy NGC 6946.
On July 25, 2013 a Supernova (SN2013ej) was discovered by Lick Observatory Supernova Search Program at a magnitude 13.5 mag. Within only 2 days, brightness rose to 12.6 mag. and reached its peak on August 4 (10 days after its discovery) at 12.4 mag. SN2013ej is Type II-P. Type II-Supernovae are final bursts of heavy stars with appr. 10 – 30 solar masses. Following the link to the left, you can as well find an animation with an image of M74 as of 2011.
M 56 is a Globular Cluster in the constellation Lyra, visible in the summer skies. Despite its total magnitude of appr. 9 mag and a diameter of appr. 9 arcmin, it is sometimes missed because of its relative vicinity to the famous Ring Nebula M 57. Have a closer look on this nice Globular by clicking on the thumbnail to the left.
NGC 7741 is a prominent barred spiral galaxy in the constellation Pegasus. Despite its brightness and size it is rarely imaged. In our picture we tried to go really deep and reveal the myriads of surrounding background galaxies. A nice cluster can be seen to the right of NGC 7741.
Abell 21 is also known as the “Medusa Nebula”. It is an old and quite large Planetary in the constellation Gemini. Extending more than 10 arcmin in diameter, it has a low surface brightness and hence is visually an object for really large telescopes and also photographically requires long exposure times. Abell 21 is approximately 1500 light years away and 4 light years in diameter.
NGC 6894 is a Planetary in the constellation Cygnus. With a diameter of less than 1 arcmin (appr. 40-50 arcsec) it requires a large focal length and good seeing conditions to reveal some detail. Our image was taken in nights with fairly good seeing (FWHM <2 arcsec).
NGC 6781 is a Planetary in the constellation Aquila. As common for Planetaries, NGC 6781 shows the two prevailing colors red (hydrogen) and blue/green (oxygen).